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How Irmaa Is Calculated

How IRMAA Is Calculated: The Two-Year Lookback, Income Triggers, and Planning Strategies for Federal Retirees

07/21/2026
For many federal retirees, the Income-Related Monthly Adjustment Amount (IRMAA) comes as an unexpected layer of healthcare costs. While Medicare is often thought of as a uniform benefit, IRMAA introduces income-based pricing that can significantly increase monthly healthcare expenses for ... Read More