On line 12(e) of Schedule 3 of my 2020 return, my tax return says I owe Uncle Sam $1,813 for the deferral of self-employment taxes, half of this being due on Dec 31, 2021, and the other half due on Dec 31, 2022. I received a letter from the IRS that says I owe them $1,013 on Dec 31, 2021. Why are the numbers different, and what amount should I pay?
