2025 Irmaa Brackets And Premiums. For 2025, the standard monthly part b premium is up $10.30 from 2024, now at $185 per month. However, if your income exceeds certain thresholds, you may be subject to irmaa surcharges.

Part b deductibles will also see an uptick to $257 this year. Explore strategies for minimizing irmaa costs and appealing.