I was also trying to figure out where this amount came from so I can figure out 2021 estimated taxes. If it helps, for me, the amount on the "Total of your othe...
I was able to go through the 1040-es in TT as suggested and after entering all the estimated information for 2020, it calculated updated estimated payments (fou...
Edit - I think I made the mistake. I took the $1,975 amount was from line 23 on form 1040. But it appears that the estimated taxes are calculated from the resul...