How IRMAA 2026 Affects Your Medicare Premiums IRMAA 2026 determines whether you'll pay more than the standard Medicare premium based on your 2024 income. If you're over the threshold for your filing status, you could see monthly surcharges added to both Part B and Part D premiums. The 2026 IRMAA brackets project increases due to inflation, so even modest income growth can push retir... https://www.federalpensionadvisors.com/post/2025-irmaa-brackets