Medicare Premiums 2024 Brackets Income 2021. The centers for medicare and medicaid services (cms) have yet to release the 2025 irmaa surcharge amounts for part b. The standard monthly premium for medicare part b enrollees will be $148.50 for 2021, an increase of $3.90 from $144.60 in 2020.

In 2024, the standard part b monthly premium is $174.70. The standard monthly premium for medicare part b enrollees will be $148.50 for 2021, an increase of $3.90 from $144.60 in 2020.