I just realized that I paid estimated federal taxes (additional to what is held in my pay check) in 2019 quarterly (4 times) but forgot to enter it when I did my taxes for 2019. I also paid my additional estimated federal taxes by using 1040-ES for 2020. Can I add the payments of my 2019 to my 2020 additional Estimated Taxes (where can I enter this info) or what should I do to correct the mistake? Thanks for trying to help me...
