Medicare Premium Income Limits 2025 By State. The standard monthly premium for medicare part b in 2025 is $185, up from $174.70 in 2024. The average monthly medicare part d premium in 2025 is $46.50 (up from $34.70 in 2024).
Some medicare part d plans also have a deductible. Medicare part b is essential for medical coverage, and its standard monthly premium in 2025 is $185.00, a little over ten dollars more than the standard premium in 2024.