Well, the IRS link for Line 5 Worksheet https://www.irs.gov/instructions/i1040s8#en_US_2021_publink100077560
shows that they subtract 2000 from 3000 to get 1000 (one child under 18) for line 5 - but Turbo Tax calculated this as 2000 for my return. there's no worksheet in Turbo Tax to see the mistake, but this sounds like intuit's mistake - at least as to penalty/interest. ?
