Preparing a 2020 individual return; Disposition screen has installment sale of assets with current year principal payments.  Form 6252 is correct.  I manually input the gain in screen 51.311 for the NH return.  The NH-1040 has page 3 with #1g of $10,504 (correct); carries down to line #5 Gross Business Profits of $10,504.  Page 3 has line #7 of $10,504; #8 is 1.0000; #9 NH Taxable Business Profits $10,504. Line 10 has no computation of the tax ($10,504 x 7.7% = $809). Line 12 has no computation due.

I've looked through every screen for an override. No idea why it's not calculating.

I called NH DRA to verify a tax should be calculated and yes, it does.