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What Does IRMAA Stand For?

Updated: Nov 24, 2023


Income-related Monthly Adjustment Amount


The standard Part B premium amount in 2024 is $174.80. Most people pay the standard Part B premium amount. 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 (IRMAA).

The income-related monthly adjustment amount (IRMAA) is an extra charge added to your premium. It is a sliding scale with a set of statutory percentage-based tables used to adjust Medicare Part B and Part D prescription drug coverage premiums. The higher the beneficiary's range of modified adjusted gross income (MAGI), the higher the IRMAA. Part B & D premium costs are listed below.



Monthly Medicare Part B and D costs per person in 2024, by income*

SINGLE FILERS

MARRIED, FILING JOINTLY

PART B PREMIUM

PART D SURCHARGE †

Income: $102,500 or less

Income: $205,000 or less

$174.80

​$0

$102,501 - $130,000

$205,001 - $260,000

$244.70

$12.90

$130,001 - $162,000

$260,001 - $324,000

$349.60

$33.30

$162,001 - $193,500

$324,001 - $387,000

$454.40

​$53.80

​$193,501 - $500,000

​$387,001 - $500,000

$559.20

​$74.20

$500,000 and above

$750,000 and above

$594.20

$81.00

*Income determining 2024 premiums is 2022 adjusted gross income plus tax-exempt interest income


†Surcharge is added to the Part D premium, which varies based on the plan


Source: Centers for Medicare and Medicaid Services


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