IRMAA = Income Related Monthly Adjustment Amount
Part B monthly premiums by income
The standard Part B monthly premium amount in 2025 will be $185. Most people will pay the standard Part B premium amount.
Since 2007, your Part B monthly premium is based on your Modified Adusted Gross Income (MAGI) with a 2 year lookback. These income-related monthly adjustment amounts affect roughly 7 percent of people with Medicare Part B. The 2025 Part B total premiums for high-income beneficiaries with full Part B coverage are shown in the following table:
Part D IRMAA charges will be on your Medicare bill and these charges are paid directly to Medicare:
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