2024 Irmaa Brackets Part B Premiums. One of the direct consequences of irmaa is the increase in monthly premiums for medicare part b and part d coverage. The income limit for irmaa in 2025 is $106,000 for individuals and $212,000 for couples.
The part b premium for immunosuppressive drugs only is $103 per month in 2024 ($110.40 in 2025). Medicare part b premiums 2024 and part d premiums are expected to be: