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How Does the Income-Related Monthly Adjustment Amount Affect the Total Medicare Part B Premium?

Excerpted from "Social Security Handbook". See the up-to-date, official Social Security Handbook at ssa.gov.

2505. How Does the Income-Related Monthly Adjustment Amount Affect the Total Medicare Part B Premium?

The Income-Related Monthly Adjustment Amount (IRMAA) is only one part of the cost of a beneficiary's Part B premium. The amount a beneficiary ordinarily pays for Part B each month consists of:

  • The Standard premium, plus

  • Surcharges that may be due for late enrollment or reenrollment (if applicable), plus

  • IRMAA (if applicable), minus

  • Medicare Advantage reduction in premium credited (if applicable), see §127.5.

Last Revised: May 22, 2007


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