Money Not ready for the April 18 tax deadline? Here’s how to file an extension. April 13, 2022April 13, 2022 Susan Tompor, Detroit Free Press Comments Off on Not ready for the April 18 tax deadline? Here’s how to file an extension. Regardless of your income, you can go to IRS.gov to use "Free File" to electronically request an automatic six-month extension. No fee is charged.