What Is IRS Form 4868?

If you're not ready to file your federal tax return by April 15, you can file Form 4868 to get an automatic six-month extension. This pushes your filing deadline to October 15. The process is simple, and you don't have to explain why you need more time — the IRS grants extensions automatically.

What the Extension Covers

The extension applies to filing only. It does not extend the deadline to pay any tax you owe. If you owe taxes, you're still expected to pay by April 15. If you don't, the IRS will charge interest on the unpaid balance and may assess a failure-to-pay penalty from April 16 forward.

How to File

You can file Form 4868 electronically through most tax software, through the IRS Free File system, or by mailing a paper form. If you pay any estimated tax due by credit card or Direct Pay, you may be able to indicate you want an extension during that process without separately filing the form. The key is getting the extension filed by April 15.

Estimating What You Owe

To avoid penalties and interest, estimate your tax liability as accurately as you can when requesting the extension. Pay any balance you expect to owe by April 15. Even a rough estimate is better than paying nothing. If you significantly underpay, you'll owe interest on the difference.

Who Benefits From an Extension

Extensions are useful when you're waiting for K-1s from partnerships or trusts (which often arrive late), dealing with a complicated tax situation, going through a life event that makes it hard to focus on taxes, or simply haven't had time to gather everything. There's no penalty for using an extension as long as you pay on time.

State Extensions

Filing Form 4868 extends only your federal return. Most states have their own extension procedures. Some states automatically give you an extension if you have a federal extension; others require a separate filing. Check your state's rules.