Do I need to do anything else after filing my extension?

No further action is required after your extension is accepted.

You have until October 15 to file your actual tax return. Use the extra time to gather your documents and work with your tax preparer if needed.

Note: If you owe taxes, payment was due on April 15 regardless of the extension. See "Does filing an extension mean I don't have to pay my taxes today?" for more details.