My partner recently got a letter saying he owes x amount to single tax credits. Yeah hey have been closed every time he’s finished work and he works weekends when they are closed and has been unable to speak to them since getting the letter a few days ago.... doesn’t single tax credits mean a single person with children claimed it?? It appears when he lived with his ex wife some years ago she went through a stage of saying she was single while he was working away so she could claim more money! Is this another one of those? He’s never lived single with his children and says he’s never even claimed tax credits!