How do I file a tax extension before the April 15, 2026 deadline?

Filing a tax extension gives you until October 15, 2026 to submit your federal return without a failure-to-file penalty. The extension request itself must be filed by the original due date — April 15, 2026.

Critical point: An extension gives you more time to FILE, not more time to PAY. If you owe taxes, you must pay your estimated tax liability by April 15, 2026 to avoid interest and the failure-to-pay penalty (0.5% per month). Estimate conservatively and overpay if uncertain — you'll get a refund when you file.

4 ways to file an extension:

1. IRS Free File (recommended): Go to IRS.gov/freefile and use any Free File product to submit Form 4868 electronically at no cost. Confirmation is immediate.

2. IRS Direct Pay + automatic extension: If you pay any amount owed via IRS Direct Pay and select '2025 income tax' as the reason, you are automatically granted an extension. No separate Form 4868 required.

3. Tax software: TurboTax, H&R Block, TaxAct, and similar software all have a built-in extension filing option with estimated tax payment guidance.

4. Paper Form 4868: Download Form 4868 from IRS.gov, fill it out, mail it (must be postmarked by April 15), and include payment for any amount owed.

State extensions are separate. Most states require their own extension request. California automatically grants a 6-month extension. New York and most other states require a separate state extension form. Check your state's Department of Revenue website.

Who gets automatic extensions without filing?

• US citizens and residents living abroad on April 15 get an automatic 2-month extension to June 15
• Military personnel in combat zones receive extended deadlines
• Federally declared disaster area victims receive IRS filing relief

What happens if you miss April 15 without an extension?

The failure-to-file penalty is 5% of unpaid taxes per month, up to 25%. The failure-to-pay penalty is 0.5% per month. Combined, these compound quickly. Always file Form 4868 if you are not ready to file on time.