There is no place to record that. If you sent an extension request by mail then the IRS knows you have an extension. If no tax was due, it is a moot point anyway because there is no penalty for filing late if you do not owe or are getting a refund. There is no place to enter on your tax return that you have an extension. You will be able to e-file up until October 15, and then e-filing will close down.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
