Certain Medicare beneficiaries may face higher premiums due to IRMAA—an income-based adjustment applied to Part B and D coverage. This additional charge is calculated using your income from two years ago. If you earn above the set thresholds, your monthly premiums will include this extra cost. IRMAA is relevant to both Original Medicare and Medicare Advantage plans. See below for t... https://www.federalpensionadvisors.com/post/2025-irmaa-brackets