Income Tax 2026 · Need to Know · Federal & Colorado: ninety topics at full length, with worked examples in real dollars, the Colorado side of each one, what to bring your preparer, and links to the actual forms. Written and edited by an Enrolled Agent, for readers, not for other preparers.
90 articles in 11 sections. Search, or browse by section; the + opens a quick summary, the title opens the article.
What this is, and the numbers every article leans on.
Every figure Income Tax 2026 leans on, in one place: 2026 standard deduction, brackets, retirement limits, Social Security and Medicare thresholds, Colorado rates and subtractions, with 2027 figures filled in as the IRS publishes them.
Every figure Income Tax 2026 leans on, in one place: 2026 standard deduction, brackets, retirement limits, Social Security and Medicare thresholds, Colorado rates and subtractions, with 2027 figures filled in as the IRS publishes them.
Changes that take effect on the 2026 return, filed in early 2027.
New for 2026: taxpayers who take the standard deduction can deduct up to $1,000 ($2,000 joint) of cash gifts to charity. What counts, what it saves by bracket, the new 0.5%-of-AGI floor for itemizers, and the ways around it.
Nine out of ten taxpayers take the standard deduction, and for most of them a gift to charity has made no difference on the return since 2017, when the standard deduction nearly doubled. Starting with tax year 2026, people who take the standard deduction can deduct cash gifts to charity on top of it: up to $1,000, or $2,000 on a joint return. The deduction is permanent, with no expiration date, which is more than can be said for several other 2026 changes.
The 2026 federal brackets, standard deduction ($16,100 / $24,150 / $32,200), age add-on and senior deduction, with the 2025 figures alongside. How brackets actually work, what inflation moved, and the two changes that did not move your way.
The seven federal rates, 10% through 37%, are now permanent; the 2025 tax law removed the expiration date that had hung over them since 2017. What changes each year is where each rate starts and stops. For 2026 the brackets moved up about 4% for inflation, which means a little more of your income is taxed at each lower rate before the next one kicks in. On an unchanged income, that is a few hundred dollars less tax. Whether you notice it in April is another matter.
The smaller 2026 federal tax changes in one place: Trump account contributions and the $1,000 deposit, the 1099-K threshold back to $20,000 and 1099-NEC up to $2,000, the mid-year mileage increase, the 90% gambling loss rule, 529s for K–12, the bigger child care credit, mortgage insurance, teachers, disasters, student loans, and what is gone for good.
The 2025 tax law changed more for 2026 than any year since 2018. The big items, the brackets, the charitable deduction, the Marketplace credit, the four deductions through 2028, each have their own article. This one collects the rest: a dozen smaller changes that each matter a great deal to the household they touch and not at all to anyone else.
Since September 30, 2025, the IRS no longer mails paper refund checks by default. What happens if your return has no bank account (notice CP53E and a 30-day window), the exceptions, getting the account numbers right, paying the IRS electronically, and setting up an IRS Online Account safely.
Under an executive order signed in March 2025, the federal government began phasing out paper checks on September 30, 2025. Last filing season was the first in which a paper refund check was no longer the default, and the change was barely announced. It applies to tax refunds, and it applies to money going the other way as well. For most people the fix takes one line on the return. For the people who never set up a bank account or an IRS online account because they never needed one, it is a real change.
How the premium tax credit is reconciled on Form 8962 for 2026 coverage: the enhanced credit has expired, the 400%-of-poverty cliff is back, and the repayment cap is gone. Worked example, the cliff by household size, and what to do before year end.
The help you get with a marketplace premium is not a discount. It is a tax credit, the premium tax credit, paid in advance to your insurance company every month based on the income you told Connect for Health Colorado you expected to earn. When you file your return, the credit is recalculated on Form 8962 using what you actually earned. Earn less than you guessed and the difference comes back to you as a refund. Earn more and you pay some of it back. For 2026 coverage, three things changed about the “pay it back” part, and together they can make a modest change in income very expensive.
The 2025 law's deductions and limits, most of them running through 2028.
The four deductions from the 2025 tax law for 2025 through 2028: qualified tips (up to $25,000), the overtime premium (up to $12,500/$25,000), the $6,000 senior deduction, and car loan interest (up to $10,000). Who qualifies, how they phase out, worked examples, and the Colorado addback.
Four deductions were born in the 2025 tax law and all four work the same way in one important respect: you get them whether you itemize or take the standard deduction. They go on a new form, Schedule 1-A, and they come off after adjusted gross income, so they do not change AGI, which is the number most other limits and phase-outs key on. Each one has its own income limit, its own fine print, and its own way of going wrong on a W-2. All four expire after 2028 unless Congress extends them.
The SALT deduction cap for 2025–2029: $40,000 rising 1% a year, phasing down 30 cents per dollar above $505,000 of modified AGI (2026) back to $10,000. Who should itemize again, the hidden 45% rate, timing and the Colorado pass-through entity election, and the 2030 reversion.
SALT is the itemized deduction for state income tax and property taxes. From 2018 through 2024 it was capped at $10,000, which is why so many Colorado homeowners stopped itemizing. A couple paying $9,000 of Colorado income tax and $5,000 of property tax could deduct only $10,000. Now all $14,000 counts, and with mortgage interest and charitable gifts added in, itemizing may beat the standard deduction again. The cap is $40,000 for 2025 and $40,400 for 2026, rising 1% a year through 2029. Then it goes away.
What the 2025 tax law made permanent: the standard deduction ($15,750/$23,625/$31,500 for 2025, $16,100/$24,150/$32,200 for 2026), the seven rates, the $2,200 child tax credit and its new SSN rule, plus the adoption credit, 529 K–12 expenses, disaster losses and telehealth. Amending a 2025 return.
The 2025 tax law was signed July 4, 2025, and much of it applied right away to the 2025 return. Two of its changes touch nearly every household: a larger standard deduction and a larger child tax credit. Both are now permanent, with no expiration date, and rise with inflation each year. “Permanent” means until Congress changes it, which is also what it meant in 2017.
The federal EV credits ended September 30, 2025 and the home energy credits December 31, 2025. The cutoff tests (contract and payment vs. placed in service vs. installation complete), the solar carryforward that survives, amending a 2025 return, and Colorado's remaining $750 EV credit.
The big federal credits for electric cars and home energy upgrades are gone. If you bought or installed in time, you could still claim them on your 2025 return, and if you missed it, you still can. For anything after the cutoff, there is no federal credit. The cutoffs came in two waves, and each one uses a different test for what “in time” means.
One flat rate, a refund written into the constitution, and subtractions that make the state kinder to retirees than it looks.
Ten things that make Colorado income tax different: the voter-owned 4.40% flat rate and Amendment 87, TABOR refunds, credits tied to the revenue forecast, rolling conformity with federal law, the retiree subtractions, the $300,000 deduction addback cliff, refundable family credits, the SALT Parity election, move-year returns, and what Colorado doesn't do.
Colorado’s income tax looks like the simplest in the country: one flat rate, no local income taxes, a return that starts from the federal number and asks a short list of questions. Most of that is true. The complexity is somewhere else: in a refund written into the constitution, credits that switch on and off with the state’s revenue forecast, and a handful of income lines where one dollar changes everything. Here are the ten things to know.
The Colorado individual income tax return (DR 0104) for tax year 2026, line by line: federal taxable income as the starting point, the additions (state tax, the $300,000 deduction addback, out-of-state munis, overtime), the subtractions (Social Security, pensions, 529s), the 4.40% rate, the refundable credits, the TABOR line, withholding and estimated payments, and the mistakes made most often.
Colorado’s income tax return is built on top of the federal one. It does not ask you to list your wages, interest and pensions again. It takes one number from Form 1040, federal taxable income, and asks a series of questions about what Colorado treats differently. The answers are a short list of additions, a longer list of subtractions, a single multiplication at 4.40%, and a set of credits that are unlike anything on the federal return. The individual form is the DR 0104 (verify), and the additions and subtractions sit on a schedule behind it, the DR 0104AD.
That design has a consequence most people never think about: almost every federal decision flows through. Take the standard deduction federally, and Colorado starts from income after the standard deduction. Itemize, and Colorado starts from income after your itemized deductions, with one correction described below. The new federal deductions for tips, seniors and car loan interest reduce federal taxable income, so they reduce Colorado income too. The federal overtime deduction does not, because Colorado adds it back from 2026. Get the federal return right and most of the Colorado return is already right. Get it wrong and the error is taxed twice.
What TABOR is, who Douglas Bruce is, and how Colorado has refunded its surpluses on the income tax return since 1992: six-tier refunds, rate cuts, the 2022 Cash Back checks, Referendum C, the ballot-measure record, and why there is no refund for 2026.
TABOR stands for the Taxpayer’s Bill of Rights. It is Article X, Section 20 of the Colorado Constitution, added by voters on November 3, 1992, and it applies to the state and to every city, county, school district and special district in Colorado. Most people meet it once a year, on the income tax return, as a line called the state sales tax refund. The line is there some years and not others, and the amount changes from year to year. Understanding why takes a short tour through the rule itself and three decades of the state trying to live with it.
Colorado's retirement subtractions for 2026: all Social Security at 65+ (and 55–64 under $75,000/$95,000 AGI), up to $24,000 of pension and IRA income per person at 65+ ($20,000 at 55–64) shared with the Social Security subtraction. Worked examples of the shared cap, the 55–64 cliff, the PTC rebate and senior property tax exemption.
Colorado is one of the friendlier states for retirees, and the friendliness has a shape. Social Security comes off entirely at 65. Each person also gets a subtraction for pension, IRA and 401(k) income, up to $24,000 at 65 and $20,000 from 55 to 64. The part people get wrong is that the two are not stacked: the Social Security subtraction uses up the cap first, and only what is left applies to other retirement income. Your age on December 31 decides which row you are in, and each spouse is figured separately.
Every Colorado income tax change for tax year 2025, checked against the Department of Revenue: four new credits, the Social Security subtraction for ages 55–64, the 4.40% rate, the $19–$59 TABOR refund, what ended after 2024, and a rumor check.
Two things on the 2025 Colorado return will be noticed by almost everyone, and neither is a new tax policy. The rate went back up to its normal 4.40% after a one-year cut, and the TABOR refund shrank to a fraction of last year’s. Below that headline there is a longer list: new refundable credits for care workers, college students and people on disability, a Social Security subtraction that now reaches people as young as 55, and a cleanup bill that retired a dozen little-used tax breaks. The new federal deductions for tips, overtime, seniors and car loan interest flow straight through to Colorado for 2025, with no addbacks until 2026.
Colorado tax year 2026: no TABOR refund, the overtime deduction added back (HB25-1296), Proposition MM's $1,000/$2,000 deduction allowance above $300,000, the family affordability credit switched off and the EITC match cut to 25%, the child care credit up to 70%, EV credit down to $750, new subtractions, and what did not change.
Most of the differences on the 2026 Colorado return come from the state’s revenue picture rather than from new tax law. Collections came in about $176 million under the TABOR cap, which means no refund and switches off the credits tied to it. The rest come from the legislature’s response to the July 2025 federal tax law and from a ballot measure the voters approved in November 2025. The November 2026 ballot measures on the rate itself affect 2027 and later, not this return; the 2026 rate is 4.40%.
What is already law for Colorado tax year 2027: the new software-funded family credit, the EV credit back to $2,000, the bigger wildfire credit, the federal scholarship credit, the end of the portable senior exemption, and the overtime and $300,000 rules continuing. Plus Amendment 87, Proposition 136 and Proposition NN on the November 2026 ballot.
Tax year 2027 is the return filed in early 2028. Some of what will be on it is already written into law with a start or stop date, and those items are listed here. Everything else is a proposal, a forecast or a rumor. Colorado’s General Assembly meets from January to May every year and changes the income tax almost every session, so this list will be longer by the time the 2027 return exists.
Colorado's federal deduction addback for AGI of $300,000 or more: the allowance falls from $12,000/$16,000 to $1,000/$2,000 for 2026 under Proposition MM, taking charitable gifts with it. A worked example on a $400,000 couple, the cliff, how the rule evolved since 2022, what other states did, and what donors can still do: QCDs, appreciated stock, timing, Colorado's contribution credits.
Colorado’s income tax starts from federal taxable income, which is income after deductions. For most people that is the whole story: whatever reduced the federal return reduces the Colorado return. The exception is written for the top of the income scale. Once federal adjusted gross income reaches $300,000, Colorado adds back part of the federal deduction, so that the state taxes income the federal government did not. The rule does not mention charity. But for a generous giver, the charitable gift is usually the biggest number on Schedule A, so it is the gift that does most of the losing.
What happens to your taxes when you move into or out of Colorado in 2026: the residency and six-month tests, the part-year return (DR 0104PN), which income Colorado taxes before and after the move, the credit for taxes paid to another state, remote work, pensions after you leave, the 2% withholding on a nonresident home sale, and the TABOR refund.
Every year people arrive in Colorado from California, Texas and Illinois, and people leave for Arizona, Florida and the mountains of another state. Each move produces two state returns for one year, a question about which state gets to tax what, and in a few cases an argument about where you actually live. Colorado’s rules are simpler than most states’, which is good news for people arriving and occasionally bad news for people who thought they had left.
Below: how Colorado decides you are a resident, what a part-year return does, which income belongs to which state, the credit that prevents double tax, and the specific items that catch movers: the pension that follows you out, the remote job that doesn’t, the house sale as a nonresident, and the TABOR refund you lose by leaving in November.
Social Security, required distributions, Medicare premiums and the accounts that feed them.
How the federal tax on Social Security works: provisional income, the $25,000/$32,000 and $34,000/$44,000 thresholds that are never indexed, the 50% and 85% ceilings, a worked example, the 22%-to-41% marginal rate on extra income, withholding on Form W-4V, where the $6,000 senior deduction fits, and Colorado's subtraction.
Required minimum distributions for 2026: when they start (73 or 75), how much (the 26.5 factor at 73), which accounts, the 25%/10% penalty, withholding on Form W-4R. Qualified charitable distributions up to $111,000: the rules, how a QCD lowers taxable Social Security and Medicare premiums, a worked example, inherited IRAs, and the Colorado side.
A traditional IRA is a deal with the government: no tax going in, full tax coming out. The required minimum distribution, or RMD, is how the government makes sure “coming out” eventually happens. Most retirees’ planning room is right here, in how the RMD, Social Security and charitable giving interact, and the interaction is worth more than any of the three alone.
Medicare's income-related monthly adjustment amount for 2026: the $202.90 standard Part B premium, the surcharge tiers starting above $109,000/$218,000 of modified AGI from the 2024 return, why it is a cliff, the two-year lookback, Form SSA-44 for a drop in income, the surviving-spouse problem, and what keeps income under the line.
Most tax breaks come with an income limit, and the limit is often not what people expect. Cross it and the credit shrinks, the deduction disappears, or a surcharge appears. The IRS calls it a phase-out. Medicare has one too, and it is the one retirees feel most, because it arrives as a bigger deduction from the Social Security check rather than a line on the tax return, and because it arrives two years late.
It is called IRMAA, the income-related monthly adjustment amount. The standard Part B premium for 2026 is $202.90 a month. Above certain income levels Medicare adds a surcharge, in tiers, and at the top tier the Part B premium reaches $689.90 a month. There is a separate surcharge on Part D prescription coverage as well.
The widow's penalty for tax year 2026: how a surviving spouse's taxes rise on similar income after moving from joint to single filing, with a worked example, the joint-versus-single thresholds, the filing-status timeline, planning ideas, what to do in the year of death, and Colorado's per-person subtraction.
When a husband or wife dies, the survivor generally files as a single person beginning the year after the death. Household income often stays fairly close to what it was: the larger Social Security check continues, a pension with a survivor option keeps paying, and the IRAs pass to the survivor. But the tax brackets, the standard deduction and several income thresholds are roughly cut in half. The result is a higher tax bill on a similar, or even smaller, income. It is called the widow’s penalty because women more often outlive their husbands. The rules are the same for widowers.
Roth IRAs for 2026: the $7,500 limit and $1,100 catch-up, the $153,000–$168,000 and $242,000–$252,000 phase-outs, the backdoor Roth, the pro-rata rule and Form 8606, Roth conversions in retirement sized to the brackets and the IRMAA lines, the five-year rules, and the Colorado side.
A traditional IRA gives you a deduction going in and taxes every dollar coming out. A Roth IRA is the reverse. Contributions are not deductible, but qualified withdrawals, including all the growth, are tax-free, and there are no required distributions during your lifetime. For a saver, the question is which tax rate is higher, today’s or retirement’s. For a retiree, the question is how much to convert each year, and the answer is set by lines on the return rather than by the account.
Health savings accounts for 2026: the $4,400/$8,750 limits and $1,000 catch-up, bronze and catastrophic Marketplace plans now HSA-eligible, the three ways money goes in and the one that is invisible on the W-2, Form 8889 and Schedule 1 line 13, the mistakes preparers find, using an HSA as a retirement account, and the Medicare cutoff.
A health savings account is the only account that is tax-free going in, tax-free while it grows, and tax-free coming out for medical expenses. A traditional IRA gets the first two. A Roth gets the last two. An HSA gets all three, which is why people who understand it treat it as a retirement account that happens to pay for prescriptions. And of all the errors on self-prepared returns, missing the HSA deduction is the one preparers find most often, including on returns prepared by someone else.
Retirement saving for 2026: the $24,500 401(k) limit with $8,000 and $11,250 catch-ups, the $7,500 IRA limit, traditional versus Roth, the IRA deduction phase-out when a workplace plan is in the picture, the Saver's Credit up to $1,000/$2,000, the Roth catch-up rule for earners over $150,000, and the Colorado side.
The tax code pays people to save for retirement, in two ways. It lets you put money away before tax, so the saving reduces this year’s bill, or after tax, so the withdrawals are free later. And for lower-income workers it adds a credit on top. The amounts are set each year, and for 2026 nearly all of them went up.
The underpayment penalty and how to avoid it: why retiree withholding falls short, the 90% / 100% / 110% safe harbors, withholding versus estimated payments (and why withholding from a December RMD works), Forms W-4P, W-4V and W-4R, Form 1040-ES dates, Form 2210, and Colorado's own schedule.
The tax system is pay-as-you-go. Tax is supposed to arrive during the year, through withholding or quarterly estimated payments, not in one check the following April. Pay too little as you go and there is a charge for the delay, figured like interest on the amount you should have paid each quarter and did not. That is the underpayment penalty. Working people rarely see it, because an employer withholds from every paycheck. Retirees see it all the time, because a pension, Social Security and an IRA are three payers that never talk to each other.
The medical expense deduction for 2026: the 7.5%-of-AGI floor and the standard deduction it has to beat, what counts (Medicare Part B, D, supplement and Advantage premiums, long-term care premiums up to the age-based limits, nursing-home costs, mileage), what doesn't, the self-employed health insurance deduction, and a worked nursing-home year.
Medical expenses are one of the four main itemized deductions, alongside mortgage interest, state and local taxes, and charitable gifts. They come with a floor: only the part of your medical costs above 7.5% of adjusted gross income counts, and even that only helps if your itemized deductions together beat the standard deduction, which for 2026 is $16,100 single, $24,150 head of household and $32,200 joint, plus $2,050 single or $1,650 per spouse at 65. The arithmetic rules most people out. The people who clear it are usually retirees with a nursing-home year, a long hospital stay, or large long-term care premiums.
Taking money out of a 401(k) or IRA before 59½ in 2026: the 10% penalty, the full list of exceptions including the SECURE 2.0 additions, the 55 rule, Roth ordering, what withholding does, and Form 5329.
Money in a 401(k) or IRA was never taxed. Take it out and it is ordinary income, at whatever bracket you are in that year. Take it out before age 59½ and there is a second charge: a 10% additional tax on the amount, on top of the income tax. On a $20,000 withdrawal in the 22% bracket, that is $4,400 of income tax plus $2,000 of penalty plus Colorado’s $880, and the plan withheld $4,000, so $3,280 is still due in April. People are surprised by that every year.
The penalty has exceptions, and Congress has added several since 2020. Some apply only to workplace plans, some only to IRAs, and some to both. Below is the list, the one that is misunderstood most (the 55 rule), the Roth rules that let you take contributions back at any time, and the form that claims the exception, because the plan will not claim it for you.
Children, dependents, college, and the return nobody wants to file.
The 2026 child tax credit: who is a qualifying child, the $2,200 amount and $1,700 refundable part, the phase-out at $200,000/$400,000, divorced parents and Form 8332, and the new Trump accounts with their $1,000 federal deposit claimed on Form 4547.
The child tax credit is the biggest single tax break most families with children get, and after the 2025 law it is permanent and indexed for inflation. The same law created an investment account for children under 18, seeded with $1,000 of federal money for children born from 2025 through 2028. The credit arrives automatically if the return is prepared right. The deposit does not.
Dependents for 2026: the five tests for a qualifying child, the four tests for a qualifying relative (gross income under $5,300), what each dependent is worth, the tie-breaker rules, Form 8332 for divorced parents and what it does and doesn't transfer, Form 2120 for siblings sharing a parent's support, and the common situations.
Almost every family tax break starts with the same question: is this person your dependent? The child tax credit, head of household status, the earned income credit, the dependent care credit and the education credits all hang on the answer. The tax code has two kinds of dependent, a qualifying child and a qualifying relative, and each has its own tests. Every test must be met; miss one and the person is not your dependent for that year.
The child and dependent care credit for 2026: who qualifies, what counts as care (day camp yes, overnight camp no), the $3,000/$6,000 expense limits, the new 50%-to-20% rate table by AGI, FSA versus credit with the $7,500 FSA limit, the provider ID rule, and Colorado's credit of 70% of the federal one.
Many parents have no idea that summer camp and child care can reduce their taxes. That is what the child and dependent care credit is for, and it is the credit most often missing from self-prepared returns. The 2025 tax law raised the top rate to 50% starting with 2026 returns, and Colorado pays 70% of whatever the federal credit turns out to be, so for a family with child care bills the two together grew twice over this year.
The American Opportunity Credit ($2,500 per student, $1,000 refundable, first four years) and the Lifetime Learning Credit ($2,000 per return) for 2026: who qualifies, the $80,000–$90,000 and $160,000–$180,000 phase-outs, the new SSN rule, who claims the student, and how to coordinate 529 withdrawals and scholarships with the credits. Worked example.
A credit is better than a deduction. A deduction lowers the income you are taxed on; a credit comes straight off the tax. The two education credits do that for tuition, and between them they reach most students, from a freshman at a state university to a 50-year-old taking a certificate course at night. The amounts are not the hard part. The hard part is that the same dollar of tuition cannot earn a credit and be paid tax-free from a 529 or a scholarship, so how the bill is paid decides what the family gets.
529 plans in 2026: what they pay for (college, K–12 up to $20,000, credentials, $10,000 of loans), the $35,000 Roth rollover, Colorado's CollegeInvest subtraction ($26,200/$39,200 per beneficiary), withdrawals that go wrong, the $2,500 student loan interest deduction and its phase-outs, employer loan help, scholarships, and the return of taxable forgiveness in 2026.
The education credits get the attention, but three other rules move more money for many families: the 529 savings plan, which has become far more flexible; the student loan interest deduction; and whether a forgiven loan is taxed. Colorado adds a fourth, one of the better state deductions in the country for saving, and it is missed constantly because the federal return gives nothing for it, so nobody asks.
After a death: the final Form 1040 and who signs it, Forms 1310 and 56, when the estate files Form 1041, the $15 million estate exemption, the stepped-up basis on inherited property, the inherited IRA rules by beneficiary (spouse, 10-year rule, eligible designated beneficiaries), spreading withdrawals, the surviving spouse's filing status, and Colorado's side.
Losing someone is hard enough without the paperwork. The tax side is more orderly than it looks: one more return for the person, sometimes a return for the estate, and a few rules about what the people left behind inherit. Nothing has to happen the week of the funeral. Two decisions, though, are expensive to get wrong, and both are easiest in the first few months: getting date-of-death values, and what to do with an inherited IRA.
Head of household filing status for 2026: the three tests, who counts as a qualifying person, the parent-in-a-nursing-home exception, what it is worth compared with single, and the errors that bring IRS letters.
Head of household sits between single and married filing jointly. For 2026 it carries a $24,150 standard deduction against $16,100 for single, and its tax brackets are wider, so the same income is taxed less. For a single parent earning $70,000, the difference against filing single is usually $1,000 to $1,500 a year, before any credits. That is why it matters, and it is why the IRS requires paid preparers to document every one.
The rules are short. The disputes come from people applying them loosely: a boyfriend who lives in the house, a child who is away at college, a parent who lives across town, a spouse who moved out in August. Below are the three tests, what counts and what doesn’t, and the places people get it wrong.
What a divorce does to your 2026 tax return: filing status by December 31, alimony that is no longer deductible, who claims the children, splitting the house and the retirement accounts without a tax bill. Plain-English guide from
A divorce changes almost every line of a tax return, and the tax code is not sentimental about it. Your filing status is decided by one date. Alimony stopped being deductible in 2019 and nobody told the people still paying it. The child goes on one return, not two, and the rule for which one is not “whoever the decree says.” The house and the 401(k) can move between you without tax, but only if the paperwork is right. Below is the list.
This page is about income tax. It is not legal advice about your divorce, and your attorney’s decree controls what you agreed to. What it doesn’t control is how the IRS reads it, which is the part people find out about in April.
How the step-up in basis works when you inherit a house, stock or land in 2026: date-of-death value, the half step-up for a surviving spouse, joint accounts, what gets no step-up (IRAs, annuities, savings bonds), the one-year gift rule, beneficiary deeds and trusts, selling the inherited home, and why Colorado has no inheritance tax.
When someone dies, most of what they owned gets a new cost basis: its value on the date of death. The $68,000 house becomes a $740,000 house in the eyes of the IRS, and the heirs who sell it for $740,000 have no gain. Forty years of appreciation are never taxed. That is the step-up in basis, and it applies to houses, land, stock, mutual funds, a business interest, and almost anything else that was in the estate.
It does not apply to everything. Retirement accounts, annuities and savings bonds carry their tax to the heirs. Property given away before death carries the giver’s old basis, which is why a gift of the house to the kids in 2020 is one of the more expensive estate plans available. Below is how the rule works, where it stops, and what to do in the months after a death so the step-up is actually recorded somewhere.
A teenager with a summer job files first, leaves one checkbox blank, and the parents’ return is rejected. What the box means, why checking it costs the child nothing, what the mistake costs the parents, how the two returns get fixed, and the two situations where there is a real choice about who claims the child.
A son or daughter worked over the summer, earned about $6,000, and got a W-2 in January. Being responsible, they sat down with a free tax program, filed their own return, and collected a refund from the IRS and from Colorado. They were proud of themselves, and they should have been. Then the parents went to file their return in March, claimed the child as they always had, and the e-file came back rejected: a dependent on this return has already been claimed on another return.
Divorced or separated? The parent the child lives with keeps the earned income credit and head of household even when the other parent claims the child and takes the child tax credit. Why the benefits split, the three tests, a worked example worth about $7,000, and how the fix goes on the return and the 1040-X.
Here is a return that shows up every tax season. A divorced parent, a child who lives with her most of the year, and a decree that says the other parent claims the child. So she files single, with no child on the return at all. That return is wrong, and it usually costs her several thousand dollars. The child tax credit can be handed to the other parent. The earned income credit and head of household cannot. They follow the child’s home, and no decree or signed form moves them.
What probate is and what skips it: beneficiary designations, joint title, the Colorado beneficiary deed and living trusts. What happens with no will, choosing an executor, the pour-over will, powers of attorney and the living will, disclaimers, and where the tax questions come in.
Probate is the court-supervised process of collecting what the deceased owned in his or her own name, paying the bills, and handing out the rest. It is governed by state law, not federal tax law, and by itself it costs no tax. What surprises families is how much passes outside it — anything with a named beneficiary, a joint owner, a beneficiary deed or a trust — and that the will has no say over any of that. One caution: this is a tax preparer’s explanation, not legal advice. It is meant to start the conversation with your attorney in the right place; the documents themselves should be drafted by one.
The ten estate planning mistakes tax preparers see most: joint titles that override the will, life insurance owned by the wrong person, no will or a stale one, no cash to pay the bills, the wrong executor, everything to the spouse, the right asset to the wrong person, an unfunded trust, no records, and no plan at all.
This is the list, in the order a tax preparer runs into them. Most are not about money at all; they are about a title, a beneficiary form or a document that nobody read alongside the others. It is a preparer’s list, not legal advice: it explains how these things work so the conversation with an attorney starts in the right place. The documents themselves should be drafted by one.
Whether to file, what to deduct, and how gains and gifts are taxed.
Federal filing thresholds for 2026 ($16,100 single, $32,200 joint, plus the age add-ons), the $400 self-employment rule, Marketplace coverage, HSA distributions, the dependent thresholds ($1,350 unearned / $16,100 earned), seniors on Social Security with the quick test, why to file anyway (withholding, EITC, refundable credits, the three-year deadline), and Colorado's rule.
Every year people file returns they did not have to, and, more expensively, skip returns that would have sent money back. The rule itself is simple. You must file a federal return when your gross income reaches a line set by your filing status and age, and that line is the standard deduction. Gross income means everything you took in before any deductions: wages, interest, dividends, pensions, IRA withdrawals, rent, business receipts and the taxable part of Social Security.
Itemizing for 2026: the standard deduction ($16,100/$24,150/$32,200 plus age add-ons) as the bar to clear, the four itemized deductions (SALT capped at $40,400, mortgage interest on $750,000 of debt, charitable gifts above the 0.5% floor, medical above 7.5%), a worked comparison for a married and a single homeowner, and bunching when the total hovers near the line.
Every taxpayer gets to subtract one of two things from income before tax is figured: the standard deduction, a flat amount set by filing status, or the total of their itemized deductions, a list of specific expenses added up on Schedule A. You use whichever is larger. There is no advantage to itemizing for its own sake, and since the standard deduction was nearly doubled in 2018, most households take the flat amount and never see Schedule A. The 2025 law’s higher cap on state and local taxes moved some Colorado homeowners back across the line, which is why the comparison is worth running again this year.
The earned income tax credit for 2026: maximums of $664 / $4,427 / $7,316 / $8,231 by number of children, the phase-in, plateau and phase-out, the $12,200 investment income limit, the SSN and residency rules, where it goes wrong, the mid-February refund hold, Form 8867 due diligence, and Colorado's 25% match.
The earned income tax credit was built for people who work and do not earn a lot. It is refundable: if the credit is bigger than the tax you owe, the IRS sends you the difference. A single parent with two children who owes no tax at all can still receive the full credit as a refund. It also has more rules than almost any other line on the return, which is why EITC refunds are held every February and why EITC returns are audited more often than most.
Capital gains for tax year 2026: short-term vs. long-term, the 0%/15%/20% rates and the 3.8% surtax, how the 0% bracket stacks, basis including step-up at death, the $3,000 loss limit and wash sales, and Colorado's flat 4.40% on all of it. Worked examples.
When you sell stock, real estate or another investment for more than you paid, the profit is a capital gain. How it is taxed depends mostly on how long you owned the asset and on what else is on your return. For a surprising number of retirees and moderate-income families the federal rate is zero. For everyone, the rules around basis, losses and timing are where the money is made or lost.
The federal charitable deduction for 2026: who gets one (the new $1,000/$2,000 non-itemizer line, the 0.5% floor for itemizers, the 35-cent cap at the top), what counts as a charity, the receipt rules and the $250 acknowledgment, noncash gifts and Form 8283, 14-cent mileage, appreciated stock, QCDs, bunching, and what isn't deductible.
Two rules changed for 2026. People who take the standard deduction can now deduct cash gifts on top of it, up to $1,000, or $2,000 on a joint return. People who itemize lose the first 0.5% of adjusted gross income in gifts; with an AGI of $100,000, the first $500 given during the year is simply not deductible. Neither rule changes what has always decided whether a gift counts: where it went, and what you can show for it.
Gift and estate tax for 2026: the $19,000 annual exclusion per recipient ($38,000 from a couple), the $15 million lifetime exemption, when Form 709 is required and why it usually means no tax, direct tuition and medical payments, no Colorado estate tax, and the far bigger issue of carryover basis on gifts versus stepped-up basis at death. Worked example.
Very few families owe federal gift or estate tax, and the 2025 tax law made sure of it. For 2026 you can give up to $19,000 to any one person without filing anything, and you can do that for as many people as you like. A married couple can each give $19,000, so a child can receive $38,000 from the two of them in a year, and a child and a spouse can receive $76,000. The lifetime exemption, the total that can pass free of tax by gift during life and by inheritance at death, is $15 million per person, or $30 million for a married couple, now permanent and indexed for inflation. Colorado has no estate or inheritance tax at all.
The 2026 phase-outs and surcharges in the order a rising income meets them: senior deduction ($75,000/$150,000), car loan interest, IRMAA ($109,000/$218,000), tips and overtime deductions, Roth contributions, the child tax credit, the 3.8% net investment income tax, the SALT cap phase-down above $505,000, the 0.5% charitable floor and the 35-cent cap. A retired couple's roof year worked through.
Most tax breaks come with an income limit, and the limit is often lower than people expect. Cross it and the credit shrinks, the deduction disappears, or a surcharge appears. The IRS calls it a phase-out. The tax code has more than thirty of them, and a household that thinks of itself as comfortable rather than rich can trip several in the same year. A few are cliffs: one dollar over the line and the whole benefit is gone. Most are slopes, where the benefit drains away over a band of income. Either way, every added dollar of income is taxed and also costs part of a credit or deduction.
Why multiple jobs and two-earner couples end up under-withheld: each employer withholds as if it were the only income. Six W-2s at $15,000 with zero in Box 2 worked through, the W-4 fixes (Step 4(c) extra withholding, the Step 2 checkbox), the IRS withholding estimator, what to do if it already happened, and Colorado's flat-rate version.
Every tax season brings a few bad surprises, and this is one of the most common. Nobody did anything wrong, and the bill still arrived. Picture six W-2s at $15,000 apiece, each with a zero in Box 2, the federal tax withheld. Six payroll departments never talked to each other, and the IRS adds it all up in April. The same thing happens, more quietly, to married couples who both work. Some preparers call it the Box 2 Bermuda Triangle: the withholding that should have been there simply vanished.
How the 2026 Form W-4 works step by step, the two-earner mistake that causes most surprise tax bills, the new lines for tips and overtime, withholding on pensions, Social Security and IRA withdrawals, and the Colorado form.
Your refund in April is the difference between what your employer took out during the year and what you actually owed. Nothing else. A $4,000 refund means you lent the government $4,000 interest-free; a $4,000 balance means it lent you the money and may want a penalty for the favor. The W-4 is the form that sets the amount, and most of them were filled out on the first day of a job, in a hurry, years ago.
The form was redesigned in 2020 and no longer uses “allowances.” People who learned the old one find the new one unfamiliar, and the new one is unforgiving in one specific situation: two earners in one household. Below is how the form works, where it goes wrong, what changed for 2026, and the forms that do the same job for pensions, Social Security and IRAs.
How to read the consolidated 1099 from your broker for 2026: Form 1099-B sales and cost basis, 1099-DIV qualified dividends and capital gain distributions, 1099-INT Treasury and municipal interest, 1099-OID, wash sales, the 2026 capital gains rates, and what Colorado exempts.
If you have an account at Schwab, Fidelity, Vanguard, Edward Jones or anyone else, you get one envelope in February called a consolidated 1099. Inside are four tax forms stapled together: the 1099-B for things you sold, the 1099-DIV for dividends, the 1099-INT for interest, and sometimes a 1099-OID or a 1099-MISC. Then come the supplemental pages, which are the broker’s own detail and are often more useful than the forms.
Every number on those forms was also sent to the IRS, which matches them to your return by computer. Leave one off and a letter follows in about eighteen months. Below is what each box means, which ones change your tax, and the handful of things the broker does not tell the IRS, which are the ones that save you money.
Mortgage interest rules for 2026: the permanent $750,000 limit and the grandfathered $1 million, what a refinance keeps and loses, why cash-out interest is deductible only if the cash improved the home, home equity loans, points on a purchase vs. a refinance, mortgage insurance premiums deductible again, second homes, and whether you itemize at all.
Home mortgage interest is deductible if you itemize, up to the interest on $750,000 of debt used to buy, build or improve your home. That limit was temporary and is now permanent. Loans from before December 16, 2017 keep the old $1,000,000 limit, and a refinance can keep it too, within rules. The question every refinance raises is the same: how much of the new loan is still “buy, build or improve” money, and how much is something else. The IRS answers it by tracing where the dollars went, and so must you.
Two other things are on this page because they come with the refinance. Points are treated differently on a purchase and on a refinance. And mortgage insurance premiums, which had stopped being deductible, are deductible again starting with 2026 returns, permanently, for people under an income limit. And one thing comes first, because it decides whether any of this matters: with a $32,200 standard deduction and a $40,400 cap on state and local taxes, many Colorado homeowners no longer itemize at all.
How trusts are taxed in 2026: why a revocable trust changes nothing, what happens the day it becomes irrevocable, the compressed trust brackets (37% at $16,000), how distributions carry income to beneficiaries on a Schedule K-1, the 65-day rule, and Colorado’s fiduciary return.
Most family trusts fall into two kinds. The revocable living trust that an estate lawyer set up to avoid probate, which does nothing to your taxes while you’re alive. And the irrevocable trust that the first kind turns into when its creator dies, or that was set up for a child, a disabled relative, or a surviving spouse, which files its own return, has the worst tax brackets in the code, and sends the beneficiaries a Schedule K-1 they don’t know what to do with.
The core idea is simple once stated: a trust’s income is taxed once, either to the trust if it keeps the money or to the beneficiary if it pays the money out. Everything else is detail about which of those happened. Below is how it works from both sides, the trustee’s and the beneficiary’s, and the deadlines that make the difference between 12% and 37%.
The federal gift tax in 2026: the $19,000 annual exclusion, the $15 million lifetime exemption, which gifts require Form 709 even when no tax is due, gift splitting, 529 front-loading, tuition and medical payments, the house deeded to the kids, what happens when the IRS finds a $500,000 gift that was never reported (the statute never runs), adequate disclosure, and the preparer's checklist.
The federal gift tax is paid by the giver, never the recipient, and in 2026 it is paid by almost no one: the first $15 million a person gives away over a lifetime (and leaves at death) is covered by the unified exemption. But the return is a different matter. Any gift to one person of more than $19,000 in a year must be reported on Form 709, even though no tax is due, because the return is how the IRS keeps score against the $15 million. A parent who helps a child with a $60,000 down payment owes nothing and owes a return.
These returns are more common than people expect. Most are simple. The complications are the ones people don’t recognize as gifts (adding a child to a deed, forgiving a loan, paying off someone’s credit card), the elections that have to be made on a timely return or not at all, and the consequence of not filing, which is that the three-year statute of limitations never starts. A $500,000 gift that was never reported is still open twenty years later, and the example below shows how that plays out.
How the home sale exclusion works: the two-out-of-five-year rule, $250,000 single and $500,000 married, partial exclusions for a job move, health or an unforeseen event, the surviving spouse’s stepped-up basis and the two-year $500,000 window, rental and home office use, figuring your gain, and when long-time Colorado owners owe tax.
Most people who sell a house owe nothing and report nothing. The exclusion is decided by dates, and the gain by records, so a preparer asks two questions: how long did you own and live in the home, and what did you put into it? The limit is the same whether you have owned the home for three years or thirty, so for long-time owners the second question is the one that matters.
Why Box 1 of your W-2 is not your salary: the pre-tax deductions that reduce it (401(k), health premiums, FSA, HSA, dependent care), the taxable benefits that increase it (group life over $50,000, the company car, S corporation health insurance, bonuses), why Boxes 3 and 5 differ, and the gross-up an employer uses to pay the tax on a benefit. With the 2026 limits.
The subtractions are the familiar ones: the 401(k), the health premiums, the flexible spending account, the HSA. The additions are the ones that surprise people in January: the life insurance over $50,000, the personal miles on the company car, the health insurance an S corporation pays for its owner, the bonus that was “grossed up.” Boxes 3 and 5, the Social Security and Medicare wages, follow different rules, which is why the three numbers rarely match. This article is the list, in both directions, with the 2026 limits.
The yes-or-no boxes, the letters, the scams, and the odd income that shows up on a return.
The Form 1040 digital asset question for 2026: what makes the answer yes (selling, trading coin for coin, paying with crypto, staking and mining income, airdrops) and what doesn't (buying and holding, moving between your own wallets), crypto taxed as property on Form 8949, income first then property, the new Form 1099-DA and the basis gap for older coins. Worked example.
Right under your name, Form 1040 asks whether you received a digital asset as a reward, award, or payment, or sold, exchanged, or otherwise disposed of one during the year. Everyone answers it. For most people the honest answer is no. For the ones who own crypto, it is yes more often than they expect, because “dispose of” is broader than “sell for dollars,” and because the IRS now gets a form.
Tax identity theft and the Identity Protection PIN: how theft shows up (a rejected e-file), how the IP PIN works, the three ways to get one (online account, Form 15227, in person), the new PIN every January on notice CP01A, telling real IRS letters (5071C, 4883C) from scams, and what to do if it already happened (Form 14039, paper filing, IdentityTheft.gov, credit freeze). Colorado's identity checks.
Tax identity theft is quiet. Someone files a return with your Social Security number in February, takes the refund, and is gone before you sit down with your own paperwork in March. You almost never find out from the thief. You find out from a rejection: your return is e-filed, and within minutes the IRS sends it back with a code saying a return has already been filed under your number. The second version is just as common: your return is rejected because one of your dependents has already been claimed on somebody else’s return. Sometimes that is a relative who was supposed to ask first. Sometimes it is a stranger who bought the child’s number.
Gambling taxes for 2026: all winnings taxable with or without a W-2G, the $2,000 W-2G thresholds, 24% withholding over $5,000, losses deductible only for itemizers and only up to winnings, the new 90% rule, the quieter cost of winnings in AGI (Social Security, IRMAA, credits), records and win/loss statements, and a worked break-even year.
Every dollar of gambling winnings is taxable. That includes casinos, sportsbook apps, lotteries, poker, raffles, and the office pool, whether or not anyone sends you a form. The form, when it comes, is a W-2G, and for 2026 the threshold for one rose to $2,000 for most games. The IRS gets a copy of every W-2G and matches them against returns the way it matches W-2s. A missing one draws a letter. The absence of a W-2G changes nothing: a $500 win on a parlay with no form is $500 of income. The apps make this easy to forget, because the money never leaves the phone, and easy to prove, because every bet is logged.
Cancellation of debt income for 2026: how a 1099-C works, the insolvency exclusion most people miss (with a worked example), bankruptcy, the end of the home mortgage exclusion after 2025 and what a short sale or foreclosure means now, student loan forgiveness taxable again from 2026 except PSLF and death/disability, Form 982, and what to bring.
When a lender forgives a debt, the forgiven amount is generally taxable income. Settle a $10,000 card balance for $4,000 and you may owe tax on the $6,000 the bank gave up. The logic is that you received the money when you borrowed it and never paid it back, so it was income after all. The lender reports the forgiven amount on Form 1099-C, a copy goes to the IRS, and a return that leaves it off gets a letter a year or two later with tax, interest, and a penalty added. The 1099-C is the part people see. The part they miss is that several exclusions can make some or all of the forgiven amount tax-free, and each has to be claimed on the return, on Form 982, in the year the debt was canceled.
Three rules for 2026: the kiddie tax on a child's unearned income over $2,700 (Form 8615, the Form 8814 election under $13,500, custodial accounts), household employees and the $3,000 FICA threshold (Schedule H, FUTA, Colorado unemployment registration, who is exempt), and foreign account reporting (FBAR over $10,000, Form 8938). Worked examples.
A grandparent’s gift of stock turns into a child’s tax return at the parents’ rate. The aide who comes three days a week to help with Dad turns the family into an employer. An account kept open in the old country turns into a filing with the Treasury that has nothing to do with tax. Each rule is simple once stated; each is missed because nobody expects it.
The IRS Dirty Dozen for 2026: impersonation by text and email, robocalls, fake charities, social media tax hacks, online-account helpers, bogus Forms 2439, the nonexistent self-employment tax credit, ghost preparers, inflated charity schemes, fabricated W-2s, phishing of tax offices, and Offer in Compromise mills. How the IRS actually contacts people, what to do, and how to check a preparer.
Each spring the IRS publishes the scams it is seeing most. Some are criminals pretending to be the IRS, some are promoters selling a tax break that does not exist, and a few are preparers who put their clients at risk. Here is the 2026 list, in the order the IRS gave it, with the one habit that stops each.
A guide to IRS letters in 2026: the CP2000 matching notice, balance-due notices, the final notice before levy and your 30 days, the failure-to-file and failure-to-pay penalties and how they stack, 7% interest, first-time abatement and reasonable cause, payment plans, the statutes of limitation, and Colorado’s notices.
The IRS sends tens of millions of letters a year. Most are not audits. They are a computer comparing what a bank or employer reported to what your return said, or a notice that a balance exists, or a request to verify your identity. Each one has a number in the corner, a date, and a deadline, and the deadline is the only thing you need to find before you call anyone.
Below is what the common letters mean, how the penalties work and how they stack, the one-call fix called first-time abatement that removes penalties for people with a clean record, what to do when you can’t pay, and the clocks that run in both directions: how long the IRS has to come after you, and how long you have to get money back.
The two kinds of spouse relief and how they differ: injured spouse (Form 8379) when your joint refund is taken for your spouse’s old debt, and innocent spouse (Form 8857) when the IRS comes after you for a joint return you didn’t understand. The three types of innocent spouse relief, the two-year deadline, what the IRS weighs, and how Colorado treats it.
Signing a joint return makes you responsible for all of it: the tax, the penalties, the interest, and anything the IRS finds later, whether the income was yours or not. The IRS can collect the whole amount from either of you, and it will, from whichever one has a paycheck. That is joint and several liability, and the two forms of relief on this page are the exits.
They are not the same thing. Injured spouse is about a refund: the return is correct, but your share of the refund was applied to your spouse’s separate debt, and you want it back. Innocent spouse is about a liability: the return was wrong, or the tax was never paid, because of your spouse, and you want out of owing it. One is a form attached to a return and processed in a few months. The other is a claim the IRS investigates, your spouse is notified of, and that can end up in Tax Court.
How a minister's tax return works in 2026: employee for income tax and self-employed for Social Security, the parsonage and housing allowance exclusion and its three limits, why the allowance is still subject to SE tax, the Form 4361 exemption and its deadline, no withholding and the estimated-tax trap, the Deason allocation of expenses, honoraria and gifts, retired ministers, and the Colorado side.
A minister’s return is the one place in the code where the same paycheck is treated two different ways at once. For income tax, a minister serving a congregation is almost always an employee, with a W-2. For Social Security and Medicare, the same minister is self-employed by statute, pays the full 15.3% through Schedule SE, and has no FICA withheld. On top of that, part of the pay can be designated as a housing allowance that is excluded from income tax but not from self-employment tax. And the church is not required to withhold any income tax at all, so a minister who doesn’t make estimated payments arrives in April owing income tax and SE tax on the whole year.
This page is written from both sides of the desk: I am an ordained minister and have prepared these returns for years. Below is who qualifies, how the housing allowance works and where it is limited, the one-time election out of Social Security and what it costs, and the places these returns go wrong.
Fifty-nine kinds of money the IRS does not tax, updated for 2026 law: gifts and inheritances, GoFundMe, child support, the home sale exclusion, the 14-day rental rule, employer health insurance and HSAs, dependent care, life insurance, veterans’ and workers’ compensation, injury damages, insolvency, disaster relief, Roth withdrawals, municipal bonds, scholarships, and the planning moves that create tax-free money on purpose, starting with giving appreciated stock instead of cash.
Years ago a Forbes list by Kelly Phillips Erb, 50 Perfectly Legal Ways To Get Money & Benefits Without Paying Taxes, was the most-requested handout in many tax offices. The 2017 tax act, the pandemic laws and the 2025 act have changed enough that it needed rewriting, not reprinting. This is that rewrite for 2026 law, with the items that are gone marked as gone and the new ones added, followed by what a planner does with such a list.
How the IRS picks returns to examine, what an audit usually is (a letter, not a visit), the items that most often draw a second look, and what a careful return looks like.
The word audit brings to mind an agent at the kitchen table going through shoeboxes. That almost never happens. Most people will never be audited at all, and the IRS does not pick returns at random. The things that draw a second look are well known, and so is what a careful return looks like. This article covers how returns get chosen, what tends to get them chosen, and what to do about it.
Payment apps, hobbies, and when a side activity becomes a business.
Form 1099-K for 2026: the threshold back to $20,000 and 200 transactions, why the threshold has nothing to do with what is taxable, the four kinds of payment (personal, personal items at a loss, personal items at a gain, business), what the gross figure is and isn't, when the form is wrong and how to fix it on the return, and a worked example of a mixed account.
Payment apps and online marketplaces report what they pay out, and the IRS gets a copy. For 2026 the threshold is back where it was for years: more than $20,000 and more than 200 transactions. But the threshold only decides whether a form shows up. Whether the money is taxable depends on what it was for, which the app cannot know, and a woodworker who sold $8,000 of furniture through Etsy in 40 sales will not get a 1099-K and still owes tax on the profit.
Business versus hobby for 2026: how each is reported (Schedule C with expenses and self-employment tax, or Schedule 1 on the gross with no deductions), the nine-factor test, the three-of-five-year profit presumption, what a few bad years mean, the records that settle it, and a worked example of the same $6,000 of pottery sales both ways.
If you sell crafts, raise horses, breed dogs, or do photography on the side, the IRS will want to know whether it is a business or a hobby. The difference matters more than most people expect. Business expenses are deductible, and a business loss can offset other income, such as wages. Hobby income is fully taxable, and hobby expenses are not deductible at all; the 2025 tax law made that permanent. An activity that loses money is where the IRS pays attention, because a loss that offsets wages is a real tax benefit, and that is the case it challenges.
Renting a room, listing on Airbnb or VRBO, or turning your house into a rental in 2026: the 14-day rule, Schedule E vs. Schedule C, the seven-day rule for short-term rentals, mixed-use limits, depreciation on conversion, what happens to the home-sale exclusion, and Colorado lodging tax and licensing.
A house that earns money is a business, and the tax code has three sets of rules for it depending on how much of the house, how often, and whether you still live there. Rent the whole place for a few weekends a year and the income may not be taxable at all. Rent a room all year and you have a small Schedule E with depreciation on a fraction of the house. Move out and rent the whole thing, and you have a rental property with a basis question, a depreciation schedule, and a home-sale exclusion that has started a clock.
Short-term rentals add a fourth set: Airbnb-style rentals averaging a week or less are treated differently from a lease, sometimes better, sometimes worse, and they bring Colorado sales and lodging tax with them. Below are the rules in the order people encounter them.
The home office deduction for 2026: the exclusive-and-regular-use test, why employees can’t take it, the $5-per-square-foot simplified method vs. Form 8829, depreciation and the recapture at sale, how S corporation owners get it through an accountable plan, and the Colorado treatment.
If you run a business from home, part of your rent or mortgage interest, your utilities, your insurance and your repairs is a business expense, and so is depreciation on the part of the house the business uses. The deduction is real, it is worth a few hundred to a few thousand dollars a year, and it has survived decades of audits because the rule is narrow and clear: the space has to be used exclusively and regularly for the business, and it has to be your principal place of business or a place you meet clients.
Two things changed the landscape. In 2018 the deduction for employees went away, and the 2025 act made that permanent, so the forty million people who worked from home for an employer get nothing. And the IRS added a simplified method, $5 a square foot, that removes most of the recordkeeping and most of the audit risk. Below is who qualifies, how both methods work, and the part people forget: the depreciation comes back when you sell.
The qualified business income deduction in 2026, now permanent: 20% of Schedule C, partnership, S corporation and some rental income, the $201,750 / $403,500 thresholds, the widened phase-in, the specified service trade list, the wage and property limits, the new $400 minimum, what reduces QBI, and how Colorado handles it.
Since 2018, a self-employed person, a partner, an S corporation shareholder, and many landlords have been able to deduct 20% of their business income before computing tax. A plumber with $80,000 of Schedule C profit deducts $16,000 and pays income tax on $64,000. It is the largest tax break most small businesses have, it does nothing for self-employment tax, and it was scheduled to vanish after 2025. The 2025 act made it permanent and loosened it slightly.
Below the income thresholds the deduction is almost automatic. Above them, it depends on what kind of business you run, how much you pay in wages, and what you own, and a doctor, a lawyer and a consultant can lose it entirely while a contractor with the same income keeps it. Below is the whole rule, the 2026 numbers, and the things that quietly shrink the deduction on the way to the form.
Legal, documented ways to pay less, organized by who you are, and one page for the whole family by generation.
Ten pages of legal, documented ways to pay less income tax in 2026, organized by who you are: families, college, homeowners, investors, the self-employed, people near retirement, retirees, the widowed and divorced, higher earners, and the whole family across generations. Each therapy gives the 2026 figure, the condition, and the full article.
Everyone wants to pay less tax. Most of what is sold under that heading is either illegal, imaginary, or built for someone else’s situation. What actually works is a shorter list than the internet suggests, it is written down in the Code and the regulations, and nearly all of it depends on who you are: a strategy that saves a retiree $4,000 does nothing for a family with toddlers, and the reverse.
So this series is organized by patient. Ten pages, nine for a stage of life or a kind of income and one for the whole family across generations, each with eight to ten therapies: what it is, the 2026 dose, the condition that makes it hold up, and the full article where the detail lives. At the end of each page, the side effects: what the therapy costs or risks, and where one therapy reduces another. Choose your page. Most households belong to two or three.
Ten legal ways a family with children pays less income tax in 2026: the child tax credit and the Trump account deposit, the dependent care credit and the FSA, head of household, the earned income credit, Colorado's family credits, putting a child on the payroll, the kiddie tax, 529 plans, adoption, and the W-4 that stops the April surprise.
Raising children is the most-subsidized activity in the tax code. A family with two children under 17 and $90,000 of income can see its federal tax fall by $4,400 for the credit alone, more with the dependent care credit, and to zero with the earned income credit at lower incomes. The subsidies are also the most-conditioned: each has an income limit, an age limit, a residency test, or a paperwork requirement, and families lose them by missing the condition rather than by being ineligible.
Below are the ten that matter most for a Colorado family in 2026, each with the dose (the 2026 figure), what it requires, and where the full article is. The contraindications at the end are for the preparers: the phase-outs and interactions where one therapy reduces another.
Nine legal ways to cut the tax cost of college in 2026: the American Opportunity Credit and how to make room for it, the Lifetime Learning Credit, 529 withdrawals timed against the credits, grandparent 529s under the new FAFSA, scholarships and the taxable part, student loan interest and employer loan payments, work-related education, the student's own return, and the Colorado subtraction.
College is the one expense where the order of payments changes the tax. The same $30,000 of tuition and room and board can produce a $2,500 credit and tax-free 529 withdrawals, or a $0 credit and taxable 529 earnings, depending on which dollars are assigned to which expense and who claims the student. The 1098-T the school sends is a starting point and is frequently wrong about the year.
Below are the nine therapies, in the order a family meets them: the credits, the 529, financial aid, loans, and the question of whose return the student goes on. The contraindications at the end are the coordination rules, which is where self-prepared returns lose the credit.
Nine legal ways a homeowner pays less tax in 2026: using the $250,000/$500,000 exclusion more than once, timing a sale around a move or a death, keeping the deduction after a refinance, the restored PMI deduction, bunching to itemize past $32,200, the 14-day rental rule, converting to a rental without losing the exclusion, the 1031 route for big gains, and Colorado's senior property tax exemption and deferral.
The home is the largest asset most families own and the most-favored one in the code: up to $500,000 of gain tax-free, interest deductible within limits, and a step-up at death for whatever is left. It is also where the 2017 and 2025 acts changed the most. The standard deduction grew until most mortgages no longer produce an itemized deduction; the SALT cap limits property tax; and the exclusion, unchanged since 1997, no longer covers a long-held Front Range house.
These nine therapies are the ones that still work, with the 2026 numbers, and the Colorado property-tax breaks that have nothing to do with the income tax return but belong on this list because the office gets asked about them every spring.
Ten legal ways an investor pays less tax in 2026: harvesting gains in the 0% bracket, harvesting losses without a wash sale, holding past a year, putting the right assets in the right accounts, the net unrealized appreciation election on employer stock, ISOs and RSUs, donating appreciated shares, qualified small business stock, avoiding the 3.8% surtax, and never selling what will be stepped up.
Investment income is taxed on a different schedule from wages: long-term gains and qualified dividends at 0%, 15% or 20%; short-term gains and interest at the ordinary brackets; and a 3.8% surcharge for higher earners on all of it. The differences between those rates, and the fact that a gain is taxed only when you choose to sell, are what make investors the demographic with the most control over their own tax.
These ten therapies are ordered by how often they apply. The first three cost nothing and work for anyone with a taxable account. The last three are for specific situations (employer stock, a startup, a large estate) and are worth a great deal when they fit. Full articles are linked; the contraindications at the end are the holding periods and wash rules that undo a therapy applied carelessly.
Ten legal ways a self-employed person or small business owner pays less tax in 2026: the solo 401(k) and defined benefit plan, the S election at the right income, the QBI deduction and keeping it, hiring your children and spouse, the home office, vehicles and the heavy-SUV rule, the HSA through the business, the Colorado PTE election, timing income and expenses between years, and the accountable plan.
An employee’s tax is mostly decided by the employer. A business owner decides nearly everything: how the business is taxed, how much is salary, what the business buys and when, who it employs, and how much goes into a retirement plan. That control is the opportunity, and the list below is long because the opportunities are. It is also where the IRS looks hardest, so each therapy comes with the condition that makes it hold up.
The ordering is by payoff for a typical owner with $80,000 to $400,000 of profit. The first two are worth five figures a year at the upper end of that range; the last two are housekeeping that keeps the others from being disallowed.
Nine legal ways to pay less tax in the years around retirement in 2026: the catch-up contributions and the new 60-63 super catch-up, the Roth conversion window between retirement and RMDs, the 55 rule and the other ways to reach retirement money early, deciding when to take Social Security with tax in the picture, managing the two-year IRMAA lookback, the HSA as a retirement account, the net unrealized appreciation election, pension and lump-sum choices, and the Colorado pension subtraction.
The years from about 55 to 73 are a one-time arrangement: income drops when work stops, required distributions haven’t started, Social Security can wait, and the low brackets sit empty. What you do with that window decides the tax on the rest of your retirement, the Medicare premiums you pay, and how much the IRS takes from your heirs’ inherited IRA. The therapies below are the ones that have to be done in this window; after 73 most of them close.
They are ordered roughly by when they come up: the last working years first, the gap years second, the decisions at 62, 65 and 70 last. The contraindications at the end are for the preparers, because nearly every therapy on this page raises income in the year it is used and the cliffs are close together.
Ten legal ways a retiree pays less tax in 2026: qualified charitable distributions instead of checkbook giving, keeping income under the senior deduction and IRMAA lines, harvesting gains at 0%, which account to spend first, RMD timing and the December withholding trick, naming the right beneficiaries after the ten-year rule, Roth conversions that still make sense after 73, the medical deduction in a high-cost year, long-term care premiums, and Colorado's pension subtraction and property tax breaks.
A retiree’s tax is set less by how much income arrives than by which income arrives and in what order. Social Security is taxed on a sliding scale that other income pushes. The new senior deduction phases out above a line. Medicare premiums are set by a line two years back. Capital gains are free below a line. Required distributions start at 73 and can be sent to charity instead of the 1040. Each of those lines is a place where a dollar of income costs more than its bracket, and each is also a place where moving a dollar saves more.
These ten therapies are the ones that matter most at 65 and over. Several of them are decided in December; one of them (the beneficiary form) is decided once and matters most to the people who come after.
Nine legal ways to reduce tax after a spouse dies or a marriage ends, in 2026: the last joint return and the two years of qualifying surviving spouse status, selling the house inside the two-year and three-year windows, the step-up and the half step-up, the spousal IRA rollover decision, Roth conversions in the widow's last joint year, the QDRO and the penalty-free cash, who claims the children, the IRMAA life-changing event, and Colorado's PERA and property tax items.
A death or a divorce changes the filing status, and the filing status changes everything: the brackets, the standard deduction, the capital-gains thresholds, the senior-deduction and IRMAA lines, and the Social Security formula are all roughly half as generous for a single filer as for a couple. That is the widow’s penalty and the divorcée’s penalty, and it is permanent. What is not permanent are the transition rules: the last joint return, the two years of surviving-spouse status, the two-year and three-year house windows, the step-up, and the choices about the IRA and the pension that have to be made once and early.
This page gathers the therapies for both situations because they share the mechanism: a status that is about to get worse, and a short period to act while it is still good. Grief and divorce are the worst time to think about tax, which is why the list is short and the deadlines are specific.
Ten legal ways a household in the 32% to 37% brackets pays less tax in 2026: every deferral available, the backdoor and mega backdoor Roth, bunching and donor-advised funds, the Colorado PTE election, choosing the entity and the salary, the cash-balance plan, real estate and the real estate professional route, QSBS and opportunity zones, the charitable tools for appreciated assets, and managing the SALT cap phase-down and the other cliffs.
Above about $400,000 of income, the therapies on the other pages mostly phase out: the child credit, the education credits, the student loan deduction, the Roth IRA contribution, the rental loss allowance, the senior deduction, and, under the 2025 act, part of the SALT deduction and a sliver of every itemized deduction. The phase-outs page is the list of what is taken away. This page is the list of what is left, and what is left is substantial: retirement deferrals that reach six figures, Roth strategies with no income limit, the charitable tools that work best with appreciated assets, the entity-level state tax deduction, and the real estate provisions that were written for people in this bracket.
Ordered by how many higher-earning households can actually use each one. The first four apply to almost everyone with a W-2 over $250,000; the rest need a business, a property, or a startup.
Tax planning across three generations in 2026: the Trump account deposit for a new baby, 529s and the state deduction, the custodial Roth, the kiddie tax, hiring your child, filling the parents’ pre-tax accounts, and the grandparents’ decisions on gifts, appreciated stock, the step-up, qualified charitable distributions and Roth conversions for the heirs.
A family does its tax planning on three returns at once. The grandparents’ return decides what passes down and when: by gift, by inheritance, or through a charity. The parents’ return is where the deductions live, because they are the ones with wages. The children’s returns, when they exist at all, are the longest compounding runway in the family and the one most often left empty. Planning by generation means asking, for each dollar, whose return it should land on and in what kind of account, and the answer is usually not the return it is sitting on now.
The page runs from oldest to youngest: the giving generation first, the earning generation second, the new one last. New in the children’s section is the Trump account, the federal deposit for a baby born 2025 through 2028, which is worth taking and worth comparing before any more money goes in. The contraindications at the end are for the preparers: the places where a move on one generation’s return changes a figure on another’s.
The calendar, what to bring, the forms decoded, a short history of tax reform, and a word about AI.
Ten concerns about AI tax preparation: you are responsible for every number, nobody signs it, it only knows what you tell it, it doesn't ask the questions that matter, confident is not correct, it may be working from last year's law, your SSN goes into a chatbot, mistakes surface years later, it can't represent you before the IRS, and it doesn't know your history or Colorado. What AI is good for.
Artificial intelligence is a useful tool, and it is getting better. It can explain a form, summarize a rule, and organize your questions before an appointment. But preparing a return takes the right questions, current law, your history, and someone who signs it and stands behind it. Here are ten reasons to think twice before letting AI prepare yours.
The dates that matter for the 2026 return and the 2027 tax year, federal and Colorado, in one place.
The dates that matter for the 2026 return and the 2027 tax year, federal and Colorado, in one place.
A printable checklist of the documents a tax preparer needs for a 2026 return, and the questions every client gets asked.
A printable checklist of the documents a tax preparer needs for a 2026 return, and the questions every client gets asked.
A printable checklist for a 2026 tax return, organized by situation rather than by form: retired, on Medicare, marketplace insurance, children, college, a side business, a death in the family, and more. Tick what applies and bring the pile.
A printable checklist for a 2026 tax return, organized by situation rather than by form: retired, on Medicare, marketplace insurance, children, college, a side business, a death in the family, and more. Tick what applies and bring the pile.
A reference to the numbers and letters on a tax return and in the mail: the forms you receive, the forms and schedules that make up the 1040, the forms for dealing with the IRS, every common IRS notice from CP14 to LT11, business forms, and the acronyms preparers use.
Tax talk is mostly numbers standing in for things. Taxpayers bring in forms they cannot tell apart, the IRS sends a letter with “CP” and three digits in the corner, and the preparer says “your MAGI is over the IRMAA line.” This page is the decoder; where a term has its own article here, the entry is a link.
Every major federal tax law from the Tax Reform Act of 1969 to the One Big Beautiful Bill Act of 2025: what each did, who it reached, and what is still on the return. The minimum tax, the IRA and 401(k), Social Security taxation, the 1986 reform, the Roth IRA, the Bush cuts, the ACA taxes, the 2017 law and the 2025 law.
A few threads run through all of it. The top tax rate was 70% when this timeline begins and is 37% today, and the bottom rate went from 14% to 10%. Social Security benefits were untaxed until 1984. The IRA, the 401(k), the Roth IRA, the child tax credit and the home-sale exclusion were each created by one of these laws. And the minimum tax of 1969, written to catch 155 wealthy people who paid nothing, grew into an alternative minimum tax that reached millions before 2017 cut it back.
Social Security is not taxed like wages. A formula decides how much of it counts, and the formula uses dollar lines set in 1983 and 1993 that have never been adjusted for inflation. In 1984 about one retiree in ten paid tax on benefits; today it is more than half (verify), with no change in the law. Understanding the formula is the difference between a retiree who is surprised in April and one who sized the IRA withdrawal in November.
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