My ex husband passed away in September 2020, I receive social security payments for my 2 children now. Where do I add this in?

[rjs]

Whose name and Social Security number are in boxes 1 and 2 on the Form SSA-1099 for the Social Security payments? If it's the child's name and Social Security number, you do not enter it in your tax return. It's the child's income, not your income. It goes on the child's tax return if he or she files one. If the Social Security is the child's only income, he or she is not required to file a tax return, and the Social Security payments do not get reported anywhere.

[AmyC]

The social security for your children is not taxed and not added to your return. Only if a child needs to file a return due to income would the social security be reported.

I recommend you run through the IRS How Do I File a Deceased Person program. It is specific to your scenario.

I am very sorry for your loss.

 More: IRS instructions for filing a return for the deceased.