Hello!

My mom received premium assistance in California (Obamacare) for 4 months to help pay for her insurance premiums when she didn't have insurance. She then became covered by her work, and now the IRS says she owes back $1500 of premium assistance (discount) that she received. They don't say why exactly, but it says that she basically doesn't qualify anymore, likely because she earned too much income (not true, she earned almost exactly what she stated she would when first applying). Can anyone tell me if they've encountered a problem like this before? She's married filing separately (my parents aren't together) and over 65 (but not retired). Thank you!