To enter, change or delete a payment made with an extension request (Federal, State, Local) -
- Click on Federal Taxes (Personal using Home and Business)
- Click on Deductions and Credits
- Click on I'll choose what I work on (if shown)
- Scroll down to Estimates and Other Taxes Paid
- On Income Taxes Paid, click on the start or update button
On the next screen select the type of extension payment made and click on the start or update button
Or enter federal extension payment in the Search box located in the upper right of the program screen. Click on Jump to federal extension payment
If your AGI is $73K or less you can use one of the totally free options thru the IRS : https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free