Irmaa Estimated Premium Brackets 2025. Our free calculator helps you determine part b and part d irmaa surcharges. This article reviews the 2024 and projected 2025 irmaa income brackets, as well as how irmaa brackets are calculated and how you pay the extra surcharge.

To determine your irmaa, you’ll need to use your 2022 modified adjusted gross income (magi). Most other medicare part d beneficiaries earning.