I had one child under 6 at the end of 2020 so I received the $2,000 credit when I filed my taxes at the start of February but then the tax credit went up to $3,600 when Biden signed the American Rescue Plan in the middle of March. I didn’t do anything to amend my 2020 filing so is there anything I can do to get that $1,600 difference as a credit on my 2021 tax filing?
