In the Search box type "estimated tax payments" (without the quotes, and be sure to include the last S), then click the link that says "Jump to estimated tax payments." That takes you to the screen that says "Estimates and Other Income Taxes Paid." Scroll down a little to the second section, "Payments with Extension." Click the Start button for "Payment with 2023 federal extension" and enter the amount you paid. It will be credit towards what you owe, and you will get a refund for the excess. In your tax return the amount that you paid with the extension will appear on Schedule 3 line 10.
