I know it is confused. In 2019 I had to pay 1,372.00. I paid in 4 vouchers of 343.00 each. It was classified by IRS as estimate for 2020. Later December I received a letter to pay my 2019 return. I login in the IRS and I did pay it again to avoid penalties. I have paid 12-28-2020. Now I don't have nothing to pay in 2019. And I have credit of the same amount in 2020 buy it is not estimate. I would like to reduce this money for 2020 that looks like I have to pay again.
Thank you
