You may want to e-file IRS Form 4868 if you miss the deadline to mail your taxes to the IRS. The app allows users to e-File a tax extension up until midnight on April 18, 2016.

If you prefer paper filing, you can download and print Form 4868 from the IRS website and mail it before Tuesday’s deadline. When mailing your extension request, make sure to use certified mail ...

You can file Form 4868 on your own, through a tax preparer or using a tax software program. People of all income levels can use the IRS FreeFile program to file an extension for free.

You can fill out a 4868 form through the tax software of your choice, including any of the federal free file options, or mail in a physical copy of the filled-out form to the IRS before the due date.