What is the Medicare Part D IRMAA?

If your modified adjusted gross income as reported on your IRS tax return from 2 years ago is above a certain amount, you’ll pay the standard premium amount and an Income Related Monthly Adjustment Amount, also known as IRMAA. IRMAA is an extra charge added to your premium. Important points about the Part D IRMAA to keep in mind:

  • If you owe an IRMAA, Social Security will send you a letter notifying you that the extra amount you owe will be added to your Medicare Part D premium.
  • The Part D IRMAA is billed directly by the Centers for Medicare and Medicaid Services, which means any IRMAA payment should not be sent to your prescription drug plan.
  • If you do not pay your IRMAA, you risk disenrollment from your Medicare Part D plan.
  • More information about the Part D IRMAA can be found on Medicare’s website.

Return to the Medicare FAQs section to view more answers to other commonly asked questions about Medicare prescription drug coverage.

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