Tax extension (Form 4868): more time to file your 2026 return
An extension moves your filing deadline from April 15, 2027 to October 15, 2027. It is automatic and free, but it does not give you more time to pay.
General information, not tax advice. Based on IRS forms, instructions and guidance linked below. Your situation may differ.
Key dates for 2026 returns
| Request the extension and pay what you owe | April 15, 2027 |
| Extended deadline to file | October 15, 2027 |
| Living abroad: automatic deadline to file and pay | June 15, 2027 |
Three ways to get one
- Pay electronically (IRS Direct Pay, your IRS online account, debit or credit card, or a digital wallet) and mark the payment as an extension. No form needed.
- E-file Form 4868 through tax software or a preparer.
- Mail a paper Form 4868, with a payment if you have one, postmarked by April 15, 2027.
Form 4868 asks for your best estimate of the year's total tax and what you have already paid. The estimate must be reasonable; an unreasonable one can void the extension.
Penalties an extension does and does not avoid
| Penalty | Rate | Extension helps? |
|---|---|---|
| Late filing | 5% of unpaid tax per month, up to 25% | Yes, if you file by October 15, 2027 |
| Late payment | 0.5% of unpaid tax per month, up to 25% | Only if at least 90% of your tax was paid by April 15, 2027 and the rest comes with the return |
| Interest | Charged on tax paid late | No; it runs from April 15, 2027 until paid |
If a 2026 return is more than 60 days late, the minimum late-filing penalty is $535 or the full tax due, whichever is less.
Example. You owe $4,000 and pay it 6 months after April 15, 2027. With an extension and the return filed on time, the late-payment penalty is about $120, plus interest. Without an extension, filing 6 months late also brings a late-filing penalty of as much as $1,000.
Doing it yourself: File Form 4868 free through IRS Free File, your tax software, or by paying part of your estimated tax online and marking it as an extension payment.
Stuck? Try the free options first: the IRS Interactive Tax Assistant, your software’s help center and IRS-certified volunteers. See where to get help.
Frequently asked questions
Does an extension give me more time to pay?
No. It extends the time to file, not to pay. Tax you owe is still due April 15, 2027; interest runs on anything paid later, and a late-payment penalty may apply.
Do I need a reason?
No. The extension is automatic. You do not have to explain why, and the IRS contacts you only if the request is denied.
Can I get an extension just by paying?
Yes. If you pay all or part of your estimated tax electronically and mark the payment as an extension payment, the IRS treats it as your extension request; no Form 4868 is needed.
What if I cannot pay anything?
File the extension anyway. The late-filing penalty (5% a month) is much larger than the late-payment penalty (0.5% a month), so filing on time or extending still saves money. Pay what you can and look at an IRS payment plan for the rest.
I live abroad. Do I get extra time?
U.S. citizens and residents living and working outside the U.S. (or on military duty abroad) automatically get 2 months, to June 15, 2027, to file and pay, though interest runs from April 15, 2027. Form 4868 adds 4 more months to file.
Does the federal extension cover my state return?
Some states accept the federal extension automatically; others need their own form or payment. Check your state.
Official sources
- IRS Form 4868, Application for Automatic Extension of Time to File
- IRS Rev. Proc. 2025-32 (2026 inflation adjustments)
- IRS: Payments