Beneficiaries with incomes above certain limits must pay the IRMAA surcharge on Medicare Part B and D premiums. This Income-Related Monthly Adjustment Amount is derived from income reported two years ago. It affects both Original Medicare and Medicare Advantage plans. Below, we highlight the brackets for 2025 alongside 2024 and 2026 for comparison. https://www.federalpensionadvisors.com/post/2025-irmaa-brackets