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I'm still confused.  How do I know if the health coverage offered to me by my employer for the months of Oct - Dec 2023, and reported on the 1095-C I received, made me ineligible for the marketplace coverage I had during those same three months of 2023?   I would like to "repay" any premium credits I received if I was ineligible when I file our taxes instead of getting a payment due notice from the IRS with interest and penalties.  Thank You.