H&R Block and Form 8959: The answer to a 4-year-old mystery For the first time ever, my adult son (20 years old) is required to file. Since he’s away at school, I’m doing it for him. His income: $175 in wages, $17 in interest, and a roughly $6K capital gain from stock purchased when he was an infant. (That last item is the reason he needs to file.) In the “Data Verification” section, I got this odd warni…