Medicare Irmaa Brackets 2025 Calculator. The income used to calculate the medicare irmaa is taken from your modified adjusted. Irmaa is adjusted for inflation each year, so you could be in luck if you were.

The irmaa income brackets for 2023 start at $97,000 ($103,000 in 2025) for a single person and $194,000. To determine your irmaa, you’ll need to use your 2022 modified adjusted gross income.