On my PA-40 for 2020, TurboTax (for Windows) shows an amount for estimated installment payments on line 15 and also a 2020 Extension payment on line 16. I see where the line 15 amount is coming from but I cannot figure out where TurboTax is getting the dollar amount for line 16 (which is read-only). The amount on line 16 says "2000". When I click on the magnifying glass on that line 16 box, I'm taken to Form REV-276 EX, "Application for Extension of Time to File" for 2020, and there the "Amount of Your Payment" box shows "410". That box is also read-only. The numbers don't jibe, and I also have no idea how "410" got into that box either. When I click on its magnifying glass on the extension-to-file form, I'm taken back to line 1a of form PA-40, gross compensation. Going in circles.... I would be very grateful for some help in figuring this out.
