Every article in Income Tax 2026 · Need to Know · Federal & Colorado is here at full length: the worked examples, the Colorado side, what to bring your preparer, and links to the actual forms. Written for readers, not for other preparers.
Page numbers refer to the printed booklet. Every topic in the booklet has a full article here.
What this is, and the numbers every article leans on.
Changes that take effect on the 2026 return, filed in early 2027.
The 2025 law's deductions and limits, most of them running through 2028.
One flat rate, a refund written into the constitution, and subtractions that make the state kinder to retirees than it looks.
Social Security, required distributions, Medicare premiums and the accounts that feed them.
Children, dependents, college, and the return nobody wants to file.
Whether to file, what to deduct, and how gains and gifts are taxed.
The yes-or-no boxes, the letters, the scams, and the odd income that shows up on a return.
Payment apps, hobbies, and when a side activity becomes a business.
The calendar, what to bring, and a word about AI.