How do I file a tax extension?

TaxWarren TeamPublished April 25, 2026

Quick answer

File Form 4868 by April 15, electronically through tax software, IRS Free File, or by mail, for an automatic 6-month filing extension to October 15. You still must pay any estimated tax owed by April 15 to avoid penalties.

Tax extension timeline: file extension April 15, file return by October 15.

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