Medicare Part B Irmaa 2024 Chart. By law, medicare part b premiums must cover 25% of the costs incurred by that part of the program. This chart serves as a quick reference for beneficiaries to understand how their income may lead to specific adjustments in their part b and part d premiums.

Irmaa is the income related monthly adjustment amount added to your medicare part b and medicare part d premiums. For example, if your 2022 income was.