Overview
- Reports this week explain that Medicare's IRMAA uses your modified adjusted gross income from two years earlier to set Part B and Part D premiums so 2024 taxable income generally determines 2026 surcharges.
- The 2026 rules create steep cliff tiers with the standard Part B at $202.90 per month and the top IRMAA Part B charge at $689.90 per month for single filers with MAGI of $500,000 or more or joint filers with MAGI of $750,000 or more.
- Beneficiaries who experience qualifying life-changing events such as retirement, work reduction, loss of pension, or spousal death can file Form SSA-44 to ask Social Security to use current-year income instead, sometimes saving thousands in 2026 premiums.
- Voluntary or one-time taxable spikes such as Roth conversions, large capital gains from a home sale, business sales, bonuses, deferred compensation, and tax-exempt municipal interest still count toward MAGI and often do not qualify for SSA-44 relief.
- CMS estimates about 8% of Part B enrollees pay IRMAA and affected households can see multi-thousand-dollar yearly differences, so advisers recommend timing taxable events, using retirement-plan contributions and charitable strategies, and consulting a tax-focused planner.