Medicare Premiums for 2028 Tied to 2026 Tax Returns, Thresholds Trigger Surcharges
IRMAA surcharges for 2028 Medicare Part B and D will be based on 2026 tax returns, with thresholds starting at $109,000 for single filers. Medicare Part B and D premiums for 2028 will be determined by modified adjusted gross income reported on 2026 tax returns, due to a tw