Medicare Premiums For 2024 Based On Income Tax Act.  — how much are medicare part b irmaa premiums in 2024? The law requires an adjustment to your monthly medicare part b (medical insurance) and.

 — if you have medicare part b and/or medicare part d prescription drug coverage, you could owe a monthly surcharge based on an income related monthly.  — the standard monthly premium for medicare part b enrollees will be $174.70 for 2024, an increase of $9.80 from $164.90 in 2023.