What Is a Tax Extension?

A tax extension gives you an extra six months to file your federal tax return, moving the deadline from April 15 to October 15. You can request one by filing Form 4868 before the original deadline — it's automatic and requires no explanation. The key catch: an extension to file is not an extension to pay. If you owe taxes, you still need to estimate and pay by April 15 to avoid penalties. Extensions are free and easy to get.