Long-Term Outlook for IRMAA Brackets IRMAA brackets are subject to change annually based on inflation and policy adjustments. While the income thresholds generally increase each year, higher healthcare costs and legislative changes could impact future IRMAA rates. Some policymakers have proposed reforms to IRMAA, including adjusting income brackets differently or modifying the surch... https://www.federalpensionadvisors.com/post/2025-irmaa-brackets