Higher-income Medicare beneficiaries may face an additional cost known as IRMAA (Income-Related Monthly Adjustment Amount) on their Part B and Part D premiums. This fee is determined using income data from tax returns filed two years prior. If your income is above specific limits, IRMAA increases your Medicare premiums. This affects both Original Medicare and Medicare Advantage pla... https://www.federalpensionadvisors.com/post/2025-irmaa-brackets