Utah · reference
Utah calendar and forms
Every Utah date that matters for the 2026 return, the one payment rule that stands in for estimated taxes, the forms an ordinary filer will meet, how to file free on TAP, when a refund can arrive, and how to reach the Tax Commission. For anyone who files here.
By Charles Trautman, EA, editor
Need to Know Tax · written from Utah State Tax Commission sources, November 3, 2026; updated November 12, 2026 after the election · not yet reviewed by an Utah practitioner
Utah’s calendar has fewer dates than most people expect. The TC-40 is due April 15, 2027, the same day as the federal return. Everyone gets an automatic six-month extension to file, to October 15, 2027, with no form. There are no quarterly estimated payments and no penalty for not making them. What Utah has instead is one test on one day: by April 15 you must have paid in, through withholding, credits or voluntary prepayments, at least 90% of your 2026 Utah tax or 100% of your 2025 Utah tax. Meet it and you can file any time before October 15 and owe only interest on the balance. Miss it and the extension does not protect you from the late-payment penalty. The second thing to know is about refunds: the Tax Commission does not issue any before March 1 and allows itself 120 days from filing or from March 1, whichever is later.
The form side is also short. One return, the TC-40, carries every filer; TC-40A holds the additions, subtractions and credits by code, and TC-40W lists the Utah withholding. A wage earner with no dependents may file those two alone. There is no separate amended return form and no Utah W-4.
The 2027 filing season, dated
| Date | What happens | Form |
|---|---|---|
| Late January 2027; the IRS announces the date in January | The Tax Commission begins accepting 2026 returns when the IRS opens e-filing. TAP free filing opens with it. | TC-40 |
| Monday, March 1, 2027 | Earliest date an income tax refund is issued. The Commission also waits until it has your employer’s withholding return. Count 120 days from today or from the day you filed, whichever is later, before asking where the refund is. | |
| Thursday, April 15, 2027 | TC-40 due and all 2026 tax due. Last day to meet the 90%/100% prepayment test. Automatic six-month extension to file begins for everyone. | TC-40, TC-546 |
| Wednesday, September 1, 2027 | County deadline for the homeowner Circuit Breaker abatement, indigent abatement, veterans’ disability exemption and the age-75 senior deferral. Filed with the county, not on the TC-40. | County application |
| Friday, October 15, 2027 | Extended due date for the 2026 TC-40. Interest has run since April 15 on any unpaid balance; penalty too if the prepayment test was missed. | TC-40 |
| Friday, December 31, 2027 | Renter refund (Circuit Breaker) for 2026 rent due to the Tax Commission, for renters 66 or older or surviving spouses under the household income limit. Can be filed on TAP. | TC-90CB |
| April 15, 2030 | Last day to amend the 2026 return for a refund under the general three-year rule. Interest the Commission pays on an amended-return refund is capped at $100 a year from 2026. | TC-40, amended box |
| Property tax bills themselves come from the county treasurer, due November 30 each year; they are not on the income tax return and Utah has no income tax credit for property tax paid. | ||
How the extension and the prepayment test work
The Tax Commission grants every individual an automatic extension of up to six months to file. Nothing is filed to get it. The Commission’s own words: “This is NOT an extension of time to pay your taxes.” To avoid penalties on a return filed after April 15, you must have prepaid by the original due date either 90% of the current year’s Utah tax, or 100% of the prior year’s Utah tax liability (90% of the current year if you had no Utah liability last year). Prepayments count whether they came from withholding, a prior-year refund applied forward, credits, or payments sent on Form TC-546, the Individual Income Tax Prepayment Coupon. Interest accrues on unpaid tax from April 15 regardless; the prepayment test decides whether penalty is added on top.
In practice this is Utah’s estimated-tax system. A retiree with no Utah withholding, a self-employed person, or anyone with a large capital gain or Roth conversion can wait until April and pay in one lump. The trap is doing nothing in April and filing in October: the extension was never the problem, the missing payment was.
Worked example: a retiree with no withholding who files in August
A single retiree has pension and IRA income but arranged no Utah withholding. Her 2026 Utah tax will be about $2,400; her 2025 Utah tax was $2,100. Her records are not ready by April 15, 2027. Two paths.
| Pays $2,100 on TC-546 by April 15 | Pays nothing until August | |
|---|---|---|
| Prepayment test: lesser of 90% × $2,400 ($2,160) or 100% × $2,100 ($2,100) | $2,100 paid; test met | $0 paid; test missed |
| Return filed | August 16, 2027 | August 16, 2027 |
| Late-filing penalty | None; filed within the automatic extension | None; filed within the automatic extension |
| Balance paid with the return | $300 | $2,400 |
| Interest, April 15 to August 16 | On $300, four months (verify current rate) | On $2,400, four months (verify current rate) |
| Extension penalty | None | Yes, on the unpaid tax (verify current rate) |
The extension is identical in both columns. The only variable is whether $2,100 moved by April 15. The 100%-of-last-year path is the easier one for anyone whose income is steady: last year’s TC-40 line for total tax is the number to pay. If she had instead asked her pension payer to withhold Utah tax, or sent a TC-546 in December, the April question would not arise.
The forms, in the order a filer meets them
| Form | What it does | Who needs it |
|---|---|---|
| TC-40 | The return. Federal AGI on line 4, Utah additions and subtractions, the 4.45% tax, the taxpayer tax credit, the other credits, withholding and payments. The “qualified exempt taxpayer” box is line 21. An amended return is the same form with the amended box checked and the reason code entered; there is no separate form. | Everyone who files in Utah |
| TC-40A, Schedule A | Part 1 additions (out-of-state municipal bond interest, nonqualified my529 withdrawals), Part 2 subtractions (U.S. government interest, railroad retirement, repaid Social Security), Part 3 nonrefundable credits by code (AH Social Security, 18 retirement, AJ military retirement, AT child, AM earned income, 20 my529, 17 other-state tax, AP pass-through), Parts 4 and 5 refundable credits. | Anyone with an addition, subtraction or credit beyond the taxpayer tax credit, which is computed on the TC-40 itself |
| TC-40W, Part 1 | Lists every W-2 and 1099 with Utah withholding: payer’s Utah account number, Utah wages, Utah tax withheld. The return is not processed without it, and the figures must match the forms. | Anyone claiming Utah withholding; Part 2 is for mineral production withholding, Part 3 for pass-through withholding |
| TC-40B, Schedule B | Nonresident and part-year resident apportionment. Utah-source and resident-period income over total income, rounded to four decimals and capped at 1.0000, multiplied by the full-year Utah tax after credits. The taxpayer tax credit and other credits are prorated by the same ratio. | Anyone who moved in or out during 2026, or a nonresident with Utah-source income |
| TC-40S | Credit for income tax paid to another state on income Utah also taxes, one schedule per state. The other state’s return must be attached. | Full-year and part-year residents only; nonresidents never claim it |
| TC-546 | Individual Income Tax Prepayment Coupon. Sends money before the return is filed, so the 90%/100% test is met by April 15. TAP does the same without the coupon. | Anyone who expects to owe and will file after April 15, or who wants to pay in during the year |
| TC-547 | Payment coupon for a check mailed with or after the return. | Anyone paying a balance by mail |
| TC-90CB | Renter refund application under the Circuit Breaker program. Filed with the Tax Commission by December 31, separately from the TC-40, or on TAP. | Renters 66 or older, or surviving spouses, with household income under the limit ($44,221 for 2025 income; 2026 to come) |
| TC-737 | Power of attorney. Must be notarized if received on or after February 1, 2026; the IRS Form 2848 is not accepted. | Anyone who wants a preparer or family member to deal with the Commission |
| Utah has no state withholding certificate. Employers withhold from the federal Form W-4 using the Tax Commission’s Publication 14 schedules; to have more Utah tax withheld, ask payroll for an additional flat amount or make TC-546 prepayments. All current forms are on the Tax Commission forms and publications page. | ||
Filing, paying and checking a refund
Most Utah returns are e-filed with the federal return through commercial software, and the state refund arrives separately. The Tax Commission’s own system, Taxpayer Access Point at tap.utah.gov, files the current-year TC-40 free for any Utah filer, with or without a TAP profile; it does not file the federal return. A return filed without logging in is viewable for only seven days, so save a copy. With a profile you can file, view or amend the current and two prior years, make payments, set up a payment plan, and check refund status for the same three years; without one you can check only the current year. First-time filers cannot create a profile until the current return has been processed. The IRS Free File Alliance partners also offer free Utah returns to those who qualify (verify list for 2027).
Payments go through TAP by electronic check or credit card; online payments “may include a service fee.” A check with the return is payable to the Utah State Tax Commission, with your daytime phone number and “2026 TC-40” on it, not stapled; a payment mailed separately goes with a TC-547 coupon. Where’s My Refund on TAP asks for your Social Security number or ITIN and either the refund amount or the federal AGI from line 4. Renter refunds (TC-90CB) take about 60 days electronically and 90 on paper.
Reaching the Tax Commission
Taxpayer services: 801-297-2200 in the Salt Lake area, 800-662-4335 toll-free, TDD 801-297-2020, Monday through Friday 8:00 a.m. to 5:00 p.m., closed state holidays. Mail a return with a payment to Utah State Tax Commission, 210 North 1950 West, Salt Lake City, UT 84134-0266, and a return expecting a refund, or any other return, to the same street address at ZIP 84134-0260. Walk-in offices: Salt Lake City at 210 North 1950 West; Ogden at 2540 Washington Blvd., 6th Floor, 801-626-3460; Provo at 150 East Center #1300, 801-374-7070; and Hurricane (Washington County) at 100 South 5300 West, 435-251-9520. The Commission asks that account-specific questions not be sent by email.
Behind the scenes: why Utah has no estimated payments
The federal system has four estimated installments and a penalty for falling behind. Utah never adopted one. Its statute requires only that the tax be paid by the original due date, and the extension penalty is the enforcement tool. The design shifts the whole year’s cash-flow question to one day in April, which is simpler to administer, but the state gives no mid-year nudge. A retiree who is used to federal quarterly vouchers and waits for Utah’s will wait forever, and will find out in October that the automatic extension did not cover the payment.
The March 1 refund rule is a fraud control. The Commission matches each return’s withholding against the employer’s annual reconciliation before paying out, and those are not all in until late winter. That is also why TC-40W must list each payer’s Utah withholding account number: the number is what the match runs on. The 120-day allowance is the outer limit, not the average, but a return filed in early February will not be paid before March 1 no matter how clean it is.
What to bring
- Every W-2 and 1099 showing Utah withholding, with the payer’s Utah withholding account number, for TC-40W
- TC-546 prepayments made, with dates and amounts; TAP can list them
- Last year’s TC-40, for the 100%-of-last-year prepayment figure and any credit carryforwards
- The other state’s return, if you are claiming the TC-40S credit
- Dates you moved in or out of Utah, and income by period, for TC-40B
- For a renter 66 or older with modest income: rent paid in 2026 and landlord information for TC-90CB
- Any letter from the Tax Commission, and a notarized TC-737 if someone else will handle it for you
Questions people ask
Do I have to file anything to get the Utah extension?
No. It is automatic for six months, to October 15. What you must do by April 15 is pay in 90% of this year’s tax or 100% of last year’s, through withholding, credits or a TC-546 payment; otherwise penalty applies to the unpaid tax even though the return itself is on time.
Does Utah require quarterly estimated payments?
No, and there is no underpayment penalty. You may send TC-546 prepayments or pay on TAP whenever you like. The only requirement is that enough be paid in by April 15.
Why has my Utah refund not arrived? I filed in February.
The Tax Commission does not issue income tax refunds before March 1, and it allows 120 days from March 1 or from your filing date, whichever is later. Check the status on TAP with your Social Security number and either the refund amount or your federal AGI.
How do I amend a Utah return?
File another TC-40 for the same year with the amended-return box checked and the reason code, and attach what changed. There is no separate amended form. From 2026, interest the Commission pays on a refund from an amended return is capped at $100 per calendar year.
Do I need to file a Utah return if I owe nothing?
If you were a Utah resident or part-year resident who had to file a federal return, yes, even if the result is zero or you qualify as an exempt taxpayer. If you only want Utah withholding refunded, the return is the only way to get it. A nonresident who worked in Utah 20 days or fewer, had no other Utah income, and lives in a state with no income tax or a similar exemption does not have to file; athletes, entertainers and some others are excluded from that exception.
Can I have more Utah tax withheld from my pension or paycheck?
There is no Utah W-4. Ask the payer to withhold an additional flat dollar amount for Utah, if it offers Utah withholding at all, or make TC-546 prepayments through the year. Many pension payers do not withhold Utah tax unless asked.
One payment test on April 15, an extension nobody has to ask for, and no refunds before March 1
Pay in 90% of this year or 100% of last year by April 15, list every piece of Utah withholding on TC-40W, and the Utah calendar has done its work.
Written by Charles Trautman, EA, editor · Need to Know Tax, Lone Tree, Colorado
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Forms and official pages named in this article
- Form TC-40, Utah Individual Income Tax Return, with TC-40A, TC-40B, TC-40S and TC-40W (forms page)
- Form TC-546, Individual Income Tax Prepayment Coupon, and the extension rules
- Payment options and Form TC-547, Payment Coupon
- Form TC-90CB, Renter Refund, and the county property tax relief programs (Publication 36)
- Taxpayer Access Point (TAP): file, pay and check a refund
- Where’s My Refund (TAP FAQ)
- Schedule TC-40B instructions, nonresident and part-year apportionment
- Who must file
Sources and where to check
- Utah State Tax Commission: Contacting the Tax Commission (phones, addresses, offices)
- Utah State Tax Commission: Extensions and prepayments
- Utah State Tax Commission: Where’s My Refund
- Utah State Tax Commission practitioner webinar, January 15, 2026 (power of attorney notarization, interest cap)
- H.B. 60 (2025), State Tax Amendments: $100 interest cap on amended-return refunds
- Publication 36, Property Tax Relief Programs (Rev. 09/26)