So TT is transferring Federal Adjusted Gross Income (both incomes) to line 1 of the RI 1040NR, causing Line 4 and 6 to be 0, and calculating Taxable Income using both incomes (we are filling out RI before MA). Then when it credits MA, the allowable credit is $1200 less than what RI taxed us. If just my wife's income was used in RI she would get a healthy return in RI, but with both our incomes getting taxed, she owes. It's a $1400 swing.
