Projected Medicare Part B Premiums For 2025. Medicare part b premiums are expected to increase in 2025. The standard monthly premium for medicare part b enrollees will be $185.00 for 2025, an increase of $10.30 from $174.70 in.

In 2025, the standard monthly part b premium will be $185 per month — a $10.30 increase from $174.70 in 2024. The standard monthly premium for medicare part b enrollees will be $185.00 for 2025, an increase of $10.30 (5.9%) from $174.70 in 2024.