If you do not owe or are getting a refund, there is no penalty for filing late. If you owe tax due, you were supposed to pay your estimated tax due at the time you requested your extension. If you still owe a balance, you can pay it on the IRS site and it will be timely, or if your envelope is postmarked, your mailed check or money order will be timely.
https://www.irs.gov/payments
**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.**
