Tax Season Checklist (2026 Tax Year): What to Gather & When
Filing goes smoothly when you assemble the right documents before you start. This checklist covers the 2026 tax year (returns typically filed in 2027). Dates reflect the general rule; always confirm the current year's exact deadline with the IRS, since federal holidays can shift it by a day or two.
Key Deadlines
- April 15, 2027 — federal return due for most taxpayers, and the deadline to pay any tax owed.
- October 15, 2027 — extended filing deadline if you request a Form 4868 extension by April 15. An extension to file is not an extension to pay.
Income Forms to Gather
| Form | Reports |
|---|---|
| W-2 | Wages from an employer (sent by your employer) |
| 1099-NEC | Nonemployee (contract) income of $600+ |
| 1099-INT / 1099-DIV | Interest and dividend income |
| 1099-R | Retirement plan distributions |
| 1098 | Mortgage interest paid |
| 1098-T | Tuition paid (education credits) |
| 1095-A | Marketplace health-coverage info |
Deduction & Credit Records
- Above-the-line records: traditional 401(k)/IRA and HSA contributions, student-loan interest statements.
- Itemized-deduction receipts (if you itemize): charitable gifts, medical expenses, state/local tax documents.
- Childcare and dependent-care statements if claiming related credits.
- Your prior-year return—handy for comparing and carrying figures forward.
If You Cannot Pay
File anyway. The failure-to-file penalty is far larger than the failure-to-pay penalty. Pay as much as you can by the deadline, then set up an IRS installment agreement for the balance to limit ongoing penalties and interest. Our gross vs. net guide and Salary Calculator can help you plan withholding for next year so you are not surprised again.
Keep Your Records
Retain your return and supporting documents for at least three years from the filing date (longer if you substantially underreport income). Digital copies are acceptable.