How Medicare income brackets work in 2024

Medicare uses your income to set how much you pay for Part B (doctor visits) and Part D (prescription drugs). The higher your income, the higher your monthly premium — not because Medicare penalizes you, but because the program uses a sliding scale called Income-Related Monthly Adjustment Amounts (IRMAA). Your income bracket is determined by your Modified Adjusted Gross Income (MAGI) from two years prior, so in 2024, Medicare looks at your 2022 tax return.

The brackets change each year. For 2024, they start at $97,000 for a single person and go up to $500,000 and above. If you fall into a higher bracket, you pay a surcharge on top of your standard Part B and Part D premiums — sometimes hundreds of dollars more per month. Understanding where you fall helps you plan ahead and know whether you can request a review if your income dropped.

Key Takeaways

  • Medicare uses your 2022 tax return to determine your 2024 income bracket, not your current income.
  • Part B and Part D premiums increase in brackets starting at $97,000 for single filers and $194,000 for married couples filing jointly.
  • The highest income bracket in 2024 is $500,000 and above for single filers, with surcharges that can add $350 or more to your monthly Part B premium alone.
  • If your income dropped significantly in 2023 or 2024 due to retirement, job loss, or death of a spouse, you can request that Medicare recalculate your bracket using current-year income.

2024 Medicare Part B income brackets and premiums

Part B covers doctor visits, outpatient care, and medical equipment. The standard Part B premium for 2024 is $174.70 per month for most people. If your income is below $97,000 (single) or $194,000 (married filing jointly), you pay only the standard premium with no surcharge.

Once you cross into a higher bracket, the surcharge stacks on top. A single person with income between $97,001 and $123,000 pays an additional $61.80 per month. At the top bracket — $500,000 and above — the surcharge reaches $356.40 per month, making the total Part B premium $531.10. The brackets and surcharge amounts shift slightly each year, so check your Social Security statement or Medicare.gov for the current year's exact figures.

2024 Medicare Part D income brackets and premiums

Part D covers prescription drugs through private insurance plans you choose. Unlike Part B, which has one standard premium, Part D premiums vary by plan — some cost $15 per month, others $100 or more. But all plans add the same income-related surcharge on top of their base premium.

The Part D surcharge starts at $12.70 per month for single filers between $97,001 and $123,000, and climbs to $77.90 at the highest bracket. Because Part D plans already vary widely in cost, the surcharge can push your total drug premium significantly higher. When you compare plans during open enrollment, always factor in the surcharge for your income bracket — a cheap plan becomes less cheap when you add it in.

Income brackets for married couples filing jointly

If you and your spouse both receive Medicare, the brackets are higher but the surcharges explore to both of you. The first bracket for married couples filing jointly starts at $194,000 combined income. A couple earning $194,001 to $246,000 each pays the first surcharge tier on both Part B and Part D premiums.

The highest bracket for married couples is $750,000 and above. At that level, each spouse pays a Part B surcharge of $356.40 per month and a Part D surcharge of $77.90 per month. If only one spouse is on Medicare, use the single filer brackets for that person's income.

What counts as income for Medicare brackets

Medicare uses your Modified Adjusted Gross Income (MAGI), which is your Adjusted Gross Income (AGI) from your tax return plus any tax-exempt interest income. For most people, MAGI is the same as AGI. It includes wages, self-employment income, interest, dividends, capital gains, rental income, and distributions from retirement accounts like IRAs and 401(k)s.

Social Security benefits do not count toward MAGI, which is one reason some people structure their retirement income to keep MAGI lower. If you have substantial investment income or take large IRA withdrawals, those push you into higher brackets. Roth conversions also count as income in the year you convert, even though you do not owe income tax on the conversion itself.

Requesting a Medicare income review if your circumstances changed

If your income dropped significantly after 2022 — because you retired, lost a job, or your spouse died — you can ask Medicare to recalculate your bracket using your current income instead of your 2022 return. This is called a Life-Changing Event request. Medicare will ask for proof: a recent tax return, a letter from your employer showing job loss, a death certificate, or divorce papers.

You have until December 31 of the year after the event to request a review. So if you retired in 2023, you can request a recalculation through December 31, 2024, and the new bracket would take effect in 2025. Contact Social Security at 1-800-772-1213 to start the process. If approved, your new premium takes effect the month after Social Security processes the request, usually within two to four weeks.

How to find your specific income bracket

Your Social Security statement shows your MAGI and which bracket you fall into. You can view it online at ssa.gov by creating a my Social Security account. You can also call Social Security at 1-800-772-1213 and ask them to confirm your income bracket for the current year.

Medicare.gov also publishes the full bracket table each year in their premium documents. If you are comparing plans during open enrollment or trying to understand your premium bill, start with your Social Security statement — it is the official record Medicare uses, and it is the fastest way to know your exact bracket without guessing.

Frequently Asked Questions

Why does Medicare look at my income from two years ago instead of my current income?

Medicare uses a two-year lag because it takes time to process tax returns and set premiums for millions of people. The system is built around tax data, which is finalized and verified. If Medicare used current income, it would have to recalculate premiums constantly and deal with incomplete information. The tradeoff is that if your income dropped recently, you can request a review.

If I retire mid-year, does my income bracket change when ready?

No. Your 2024 bracket is locked in based on your 2022 income, even if you retire in June 2024. However, you can request a Life-Changing Event review using your 2024 income (or projected 2024 income if the year is not finished). If approved, the new bracket takes effect the following month, not retroactively.

Do I have to pay the surcharge if I delay enrolling in Part B or Part D?

The surcharge applies whenever you are enrolled in Part B or Part D, regardless of when you signed up. It is based on your income bracket at the time you are covered, not on your enrollment date. If you delay enrollment and then enroll later, you will owe the surcharge for your current income bracket once coverage begins.

Can I reduce my income bracket by taking less from my retirement accounts?

Yes. Because IRA and 401(k) withdrawals count toward MAGI, taking smaller withdrawals in a given year can lower your bracket and reduce your Medicare surcharges. Some people use this strategy to stay below a bracket threshold. However, you still owe income tax on those withdrawals, so the math depends on your overall tax situation — consult a tax professional before restructuring withdrawals.

What if my spouse is not on Medicare yet — does their income count toward my bracket?

If you file taxes jointly, yes — the combined household income determines your bracket. Even if your spouse is not yet on Medicare, their income counts. If you file separately, only your income counts, but filing separately usually costs you more in taxes overall, so check with a tax professional before making that choice.