Irmaa Brackets 2024 Single. Brackets for part b and part d are the same, but the additional amount you. Any individual or joint filer whose modified adjusted gross income (magi) exceeds the established limits for 2024 may incur an irmaa surcharge.

The irmaa for part b and part d is calculated according to your income. Use this calculator to determine your medicare irmaa charge for making over the income limit for medicare.