Irmaa Brackets For 2024 Income. Your medicare irmaa amount in 2024 is determined by your reported income in 2022. The irmaa for part b and part d is calculated according to your income.
โ the irmaa is calculated on a sliding scale with five income brackets, topping out at $500,000 and $750,000 for individual and joint filing, respectively. The irmaa for part b and part d is calculated according to your income.