The Income-Related Monthly Adjustment Amount (IRMAA) is a surcharge added to Medicare Part B and Part D premiums for individuals whose income exceeds certain levels. This is determined by your income from the tax return filed two years prior. Both Original Medicare and Medicare Advantage enrollees may be affected by IRMAA. We’ve listed the income thresholds for 2025 below, and incl... https://www.federalpensionadvisors.com/post/2025-irmaa-brackets