I requested an extension on July 15 and prepaid $650 for anticipated taxes. How do I apply that to the Turbotax return I am filing today, Oct. 15?

[VolvoGirl]

If you made a payment with the extension,

For 2019, If your extension payment did not automatically show up on 1040 Schedule 3 line 10 which goes to 1040 line 18d you need to enter it. So make sure it's not already there before you enter it!

You can type estimates paid in the search box at the top of your return and click Find and it will give you a link to Jump To the screen where you enter Extension Payments.

To enter the amount you paid with an extension (including state extension) go to

Federal Taxes (or Personal for desktop H&B version)

Deductions and Credits

Then scroll way down to Estimates and Other Taxes Paid

Income Taxes Paid - Click the Start or Update button

Next page second section Payments with Extension

Either Visit All or Click Start or Update by the extension you paid

[xmasbaby0]

When you requested your extension you were supposed to pay your estimated tax due.  Did you enter the payment you made into your tax return?  Go to Federal>Deductions and Credits>Estimates and Other Taxes Paid>Other Income Taxes 

[DoninGA]

If you used the TurboTax Easy Extension to electronically file the extension request, Form 4868, and make the tax payment with the request, the payment should already entered on your tax return. Provided you used the same user ID for the 2019 online tax return as was used for the Easy Extension. You can check to see if the amount is on your tax return by clicking on Tax Tools on the left side of the screen. Then click on Tools. Click on View Tax Summary. Then click on Preview my 1040.
The federal extension payment will be shown on Schedule 3 Line 10. The amount from Schedule 3 Part II Line 14 flows to Form 1040 Line 18d

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 Other Income Taxes, 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