What Is the Tax Filing Deadline?

The federal tax filing deadline is typically April 15 each year — that's when your tax return must be filed or an extension requested. If April 15 falls on a weekend or holiday, the deadline shifts to the next business day. Filing an extension gives you until October 15 to submit your return, but it does not extend the time to pay any taxes owed. State filing deadlines vary. Missing the deadline can result in penalties and interest.