What Does IRMAA Stand For?


Income-related Monthly Adjustment Amount


The standard Part B premium amount in 2023 is $164.90. 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.



Monthly Medicare Part B and D costs per person in 2023, by income*

SINGLE FILERS

MARRIED, FILING JOINTLY

PART B PREMIUM

PART D SURCHARGE †

Income: $97,000 or less

Income: $194,000 or less

$164.90

​$0

$97,001 - $123,000

$194,001 - $246,000

$230.80

$12.20

$123,001 - $153,000

$246,001 - $306,000

$329.70

$31.50

$153,001 - $183,000

$306,001 - $366,000

$428.60

​$50.70

​$183,001 - $500,000

​$366,001 - $750,000

$527.50

​$70.00

$500,000 and above

$750,000 and above

$560.00

$76.40

*Income determining 2023 premiums is 2021 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