Carl
Level 15

Get your taxes done using TurboTax

seems to think the credit is a gimme.

Actually, no I don't. Basically because of the large amount in this case. I would fully expect an audit regardless of which years tax return is affected. I don't know all the aspects as they apply to this specific case, nor do I claim to know all the options available. But I do know that paying back a 2019 over payment in 2020 affects the 2020 taxable income regardless of why year tax return one claims or takes the credit on. I feel it's safer to assume that claiming the credit either way, will not be the last time it's dealt with, with the IRS.

Perhaps it would be best to seek the advice of a local tax professional? Especially if state taxes are involved.