The IRS is inquiring about my 2023 tax return where tax witheld on 1040 25c is listed. I cannot find the source of this at all. I have spent hours going through all my documents, running an "amendment" of that year to see where it could have been added and nothing. None of the things others have suggested apply to me. It is not from additional Medicare Tax withheld, no Schedule K-1, no Form 1042-S, Form 8805, or Form 8288-A. How am I supposed to remedy this??
