IRMAA is an income-related adjustment to Medicare Part B and Part D premiums. It is separate from a late-enrollment penalty. For 2026, Social Security generally uses your 2024 tax information, not simply your current paycheck.
2026 Part B income brackets
| 2024 MAGI: individual | 2024 MAGI: joint | Total monthly Part B premium in 2026 |
|---|---|---|
| Up to $109,000 | Up to $218,000 | $202.90 |
| Above $109,000 through $137,000 | Above $218,000 through $274,000 | $284.10 |
| Above $137,000 through $171,000 | Above $274,000 through $342,000 | $405.80 |
| Above $171,000 through $205,000 | Above $342,000 through $410,000 | $527.50 |
| Above $205,000 and below $500,000 | Above $410,000 and below $750,000 | $649.20 |
| $500,000 or more | $750,000 or more | $689.90 |
These are full Part B premiums per person, before any separate penalty. Do not add the standard premium again. Married people who filed separately and lived together during the tax year use a different table: above $109,000 but below $391,000, the total is $649.20; at $391,000 or more, $689.90.
What income is counted?
For this calculation, MAGI is adjusted gross income plus tax-exempt interest. Social Security normally uses the most recent IRS information, generally from two years earlier. If older information was used or a return was amended, contact Social Security with supporting records.
The amount withdrawn from a bank account is not necessarily taxable income. Taxable gains, retirement distributions and other items can affect adjusted gross income differently. Confirm tax treatment with a qualified tax professional rather than assuming every withdrawal counts equally.
If your income has fallen
A qualifying life-changing event, such as stopping work, reduced work hours, divorce or a spouse's death, can support a request for a new decision. Form SSA-44 requests the event and income evidence. A reduction is not automatic whenever income changes.
If you disagree with a determination, follow the appeal instructions in your notice. Correcting tax information, requesting a new decision after a qualifying event and appealing an incorrect decision are different processes.
Keep other costs separate
Part D can have its own IRMAA in addition to the plan premium. It is paid through the federal billing or benefit-deduction process, not added to the private insurer's premium payment. Medigap and Medicare Advantage premiums are also separate from this Part B table. Use your official notice for your individual amount.
Related coverage questions
- Medicare Premiums and Deductibles: 2026 Medical Costs
- Medicare Part D Costs: Premiums, Deductibles and Annual Limits
- Medicare Part B Late Enrollment Penalty: Rules and an Estimate