Medicare Plan B Cost 2025. Beneficiaries must pay this amount before. The medicare part b premium in 2025 is $185/month for almost all enrollees, up from $174.70/month in.

In 2025, the standard monthly premium is $185, up $10.30 from $174.70 in 2024. In 2025, the part b premium will be $185, an increase of $10.30 from this year and $20.10 more than in 2023.