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IRMAA

Income-related monthly adjustment amounts for Part B and D.

IRMAA — Income-Related Monthly Adjustment Amount — is an extra amount added to your Part B and Part D premiums if your income is above a threshold.

Social Security uses your tax return from two years ago to decide whether IRMAA applies.

Key points

  • Based on Modified Adjusted Gross Income from two years back.
  • Applies to both Part B and Part D.
  • You can appeal after a life-changing event (retirement, divorce, loss of income) using form SSA-44.
  • Thresholds are updated annually.

Common questions

Next steps

Related topics

Educational only. This information is not personalized advice. For your specific situation, verify at Medicare.gov or speak with a licensed Medicare professional.