Filing a Tax Extension When You Owe Money

Yes. 

You can request an automatic extension of time to file your federal individual income tax return even if you owe tax. But the extension gives you more time to file, not more time to pay. 

Federal Law 

For 2025 federal individual income tax returns, the regular filing and payment due date for most calendar-year taxpayers is April 15, 2026. More generally, individual returns are typically due April 15 (or the next business day if April 15 falls on a weekend or legal holiday). If you timely request an extension, you generally have until October 15, 2026, to file your 2025 return.

You can request the extension in any of these ways: 

Pay all or part of your estimated tax electronically and indicate the payment is for an extension 

File Form 4868 electronically 

Mail a paper Form 4868 

If you owe money, you should still pay as much as you can by April 15, 2026. Interest generally applies to any unpaid tax after the original due date, and a late-payment penalty may also apply. Filing an extension on time can help you avoid the late-filing penalty, but it does not eliminate interest on unpaid tax. 

For individuals, the late-payment penalty is generally 0.5% of the unpaid tax for each month or part of a month the tax remains unpaid, up to 25%. The late-filing penalty is generally 5% of the tax due for each month or part of a month the return is late, up to 25%. 

There is an important Form 4868 rule if you cannot pay in full. The Form 4868 instructions state that you are generally considered to have reasonable cause for the period covered by the automatic extension if at least 90% of the total tax shown on your 2025 return is paid by the original due date through withholding, estimated payments, or payments made with Form 4868, and the remaining balance is paid with the return. 

If you cannot pay the full amount by the due date, it is generally still better to file the extension and pay as much as possible. You may also request a payment plan. 

State Law Note 

State extension, payment, penalty, and interest rules are administered at the state level and can differ from the federal rules above. The controlling authority is the applicable state revenue department or tax agency. 

Sources 

IRS — Get an extension to file your tax return 

IRS — Topic no. 304, Extensions of time to file your tax return 

IRS — 2025 Form 4868, Application for Automatic Extension of Time To File U.S. Individual Income Tax Return 

IRS — When to file 

IRS — Failure to pay penalty 

IRS — Failure to file penalty 

IRS — Payment plans; installment agreements 

IRS — About Form 9465, Installment Agreement Request 

This information provided does not, and is not intended to, constitute legal advice.