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This is from an insurance company for STD benefits. 
I was paid $1800 in Dec 2021. Of which I received a W-2, filed and paid taxes. 
Continued to receive benefits until middle of February 2022(a gross amount - Medicare and SS tax). 
Received notice March 2022 that I was overpaid the entire amount.(another story) to gross amount of $6000…instead of net amount of $5600(what I received)
From your response,  I will receive some sort of credit of $6000 via a form to file in 2022.  So anything paid as taxes for 2021, I will get to lower my AGI for 2022, in effect “getting my 2021 taxes paid back”