Popular comments on this subject are suggesting that TT starts by showing a credit of the amount of the received stimulus check(s). To verify this, start a new return. If the amount due tab shows green and in the amount of your stimulus check, then those popular comments are probably true.
It is a curious thing when a tax calculation software is coded to queue this assumption, such that a filer would have to omit the amount, rather than allowing the filer to directly enter the amount received.
