Certain Medicare beneficiaries with higher incomes must pay IRMAA, an additional fee added to Part B and Part D premiums. This surcharge is determined by income levels reported on tax returns from two years prior. Understanding 2025 IRMAA Brackets with 2024 and 2026 Comparisons Those earning above specific thresholds face higher premiums. IRMAA impacts both Original Medicare and M... https://www.federalpensionadvisors.com/post/2025-irmaa-brackets