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IRMAA Calculator: the staircase chart

2026 law · reviewed September 4, 2026

Monthly Medicare Part B premium plus Part D surcharge by 2024 income for an individual return, 2026: a six-step staircase.

Source: Considerate Capital, IRMAA Calculator, 2026 law, reviewed September 4, 2026.

The full page: method, sources, and the calculator