After you file

They just received their paper notice from the IRS .  The puzzle deepens!  Seems the IRS actually allowed $502 for the EIP.  According to T-Tax the total should be $2,104, but I have no idea how they came up with that.  Every way I checked the math manually the total should be $1,602.   Is it a coincidence that the difference between what I think the payment should have been, and what T-Tax calculated, is exactly $502?  Is it possible there is an error in the program resulting in an inaccurate upload?  I attached a photo of the T-Tax "Recovery Rebate Credit Worksheet" with no personal identifiable info, just numbers.   Help me make sense of this please.  ðŸ¤”Clip of WorksheetClip of Worksheet