Got an overpayment notice, what now? - 26 weeks in

The agency says I reported earnings incorrectly, but I think I followed the instructions. Any experience at all would help. I did not notice any errors at the time. Are payment plans possible?

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.

Read the letter for the appeal deadline and act on it, even if you think you will end up repaying. Then ask about a payment plan.