2025 Medicare Part B Premiums Rates. The standard monthly premium for medicare part b enrollees will be $$185 for 2025, an increase of 5.9% from $174.80 in 2024. Each year, the medicare part b premium, deductible, and coinsurance rates are determined according to provisions of the social security act.

Each year, the medicare part b premium, deductible, and coinsurance rates are determined according to provisions of the social security act. In 2025, the standard monthly premium for part b will increase to.