The extension will give you extra time to file your return, but you still must pay the amount you owe by April 15. If you owe taxes, pay what you can by the deadline to avoid penalties and interest.

For these folks, extensions can be granted to Oct. 15 to file your taxes, but not to pay, if you file the Form 4868 by May 1. The form can be filed electronically until April 15; after that it ...

Again, an extension to file is not an extension to pay; taxpayers should estimate their tax liability and pay any taxes owed by April 15, 2025.