Key dates for the 2026 tax year
| Date | What's due |
|---|---|
| February 1, 2027 | Employers send Forms W-2 (January 31 falls on a Sunday). Schools and payers send Form 1042-S by March 15. |
| Late January 2027 | The IRS starts accepting 2026 returns. |
| March 15, 2027 | Partnership (1065) and S-corporation (1120-S) returns. |
| April 15, 2027 | Form 1040 and Form 1040-NR if you had wages with tax withheld. Form 8843 attached. Pro forma 1120 with Form 5472. FBAR for foreign accounts (automatic extension to October 15). Most state returns. |
| April 15, 2027 | Last day to claim a refund for tax year 2023. |
| June 15, 2027 | Form 1040-NR if you had no wages subject to withholding. Standalone Form 8843. |
| October 15, 2027 | Extended deadline if you filed Form 4868 (individuals) or Form 7004 (businesses) on time. |
An extension gives you more time to file, not to pay. If you owe tax, pay by April 15 to avoid interest and penalties.
Missed a deadline?
If you're owed a refund, there's no penalty for filing late. You just wait longer for your money. If you owe tax, file and pay as soon as you can. Penalties grow every month.
Refunds from past years
You can claim a refund for up to three years after the original deadline. During 2027 you can still file for 2024, 2025 and 2026, and for 2023 until April 15, 2027. That includes FICA taken by mistake. Many Work and Travel participants from 2023 and 2024 never filed. Check what you're owed in our refund estimator.
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Frequently asked questions
When is the tax deadline for nonresidents in 2027?
April 15, 2027 if you had wages with tax withheld, and June 15, 2027 if you didn't.
Can I still get my 2023 tax refund?
Yes, if you file before April 15, 2027. After that date, a 2023 refund can no longer be claimed.
Does an extension give me more time to pay?
No. Form 4868 extends the filing deadline to October 15, but any tax owed is still due on April 15.
This guide is general information based on IRS publications and form instructions as of November 2026. It isn't tax advice for your situation. Rules change, so our tax experts check every return before filing.