You can efile your extension for free online with the IRS, using their Free File software. You have three options with the IRS Free File software.This gives you until October 15 to file without penalties. Affected taxpayers in specified counties will have until Feb. 3, 2025, to file returns and pay any taxes that were originally due during this period. The application must be submitted either in-person, USPS mail, or e-mail. Start with Form 4868, in order to tell the IRS that your 1040 will not be ready on time. In the short-hand, it asks for more time in order to file taxes. Such filers should fill out the Form 4868 and send it to an address listed on the IRS website. Don't panic: Seriously.