If you are heading into Medicare and your income has been strong, there is a surprise cost that catches a lot of retirees off guard: IRMAA. This additional charge affects how high income can increase your Medicare Part B and Part D premiums.
IRMAA stands for Income-Related Monthly Adjustment Amount. It is a high-income surcharge that can increase what you pay for Medicare Part B (outpatient and doctor services) and Medicare Part D (prescription drug coverage). (Social Security)
For many people, it is not just the extra cost, it is the timing. You can do everything “right,” then get a letter or bill saying your premiums are higher than expected. The good news is that some people can reduce or remove IRMAA if they qualify for an adjustment.
(If you want the full walkthrough, you can watch our video on the topic here.)
What Is IRMAA and Who Pays It?
IRMAA is an additional amount added to your monthly Medicare premiums when your income is above certain levels. Social Security uses the most recent federal tax return the IRS provides to determine whether IRMAA applies. For the 2026 premium year, that is generally your 2024 tax return (so it often works like a two-year lookback).
In 2026, IRMAA generally starts when MAGI (modified adjusted gross income) is above:
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$109,000 for an individual tax return
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$218,000 for a married couple filing jointly
Important: These thresholds can change over time, so you always want to verify the numbers for the year you are enrolling.
Which Medicare Costs Can IRMAA Increase?
IRMAA can affect two places:
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Medicare Part B premium
In 2026, the standard Part B premium is $202.90 per month, and IRMAA can push that higher depending on your income tier. -
Medicare Part D premium (drug coverage)
If you have Part D, IRMAA adds an extra monthly amount on top of your plan’s premium (the IRMAA amount is set by income tier).
How You Find Out If IRMAA Applies to You
Most people learn about IRMAA in one of these ways:
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A letter from Social Security explaining that higher-income premiums apply.
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A bill or deduction: the extra amount may be deducted from Social Security benefits, or billed if you are not collecting Social Security yet.
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Sometimes you may see the standard amount first, then receive an update showing the higher amount due to income.
Can You Reduce or Appeal an IRMAA Surcharge?
Yes, sometimes.
If your income is lower now because of a major life change, Social Security may adjust your IRMAA. Social Security specifically lists several “life-changing events” that can support a request to lower IRMAA.
Life-changing events that may qualify
| Life-changing event | Common real-life example |
|---|---|
| Work stoppage or reduction | You retired or cut back hours |
| Marriage, divorce, or spouse died | Filing status and household income changed |
| Loss of income-producing property | A disaster damaged rental property |
| Pension plan changes | Pension termination or reorganization |
| Employer settlement | Settlement tied to employer closure or bankruptcy |
(You will generally need documentation tied to the event and the income change.)
How to Request a Lower IRMAA Step by Step
Here is the practical path most people take:
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Confirm you are being charged IRMAA
Review your letter and your current premium amounts. -
Identify the qualifying life-changing event
The event needs to explain why your income dropped compared to the tax year Social Security used. -
Complete Form SSA-44
This is the form Social Security uses for an IRMAA reduction request tied to a life-changing event. (Social Security) -
Include supporting documentation
Examples include an employer retirement letter, proof of reduced work, a death certificate, or other records showing the change. -
Submit the request
Social Security allows you to submit online (and also by fax or mail).
Mistakes to Avoid With IRMAA
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Waiting and hoping it fixes itself quickly. Even if your income is lower now, you typically need to request the adjustment for it to be reflected sooner.
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Assuming every income spike is appealable. Some one-time income events may trigger IRMAA but do not always fit the life-changing event categories Social Security uses for a reduction request.
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Forgetting Part D. People often focus on Part B and miss that Part D can also have an IRMAA surcharge.
Help for First-Time Medicare Enrollees
If you are enrolling in Medicare for the first time, IRMAA is one of those rules that can feel small until it hits your wallet. At The Medicare Coach, our Medicare Enrollment Concierge services help you understand the rules ahead of time, spot potential premium surprises, and map out the cleanest enrollment approach so your Medicare decision protects both your healthcare access and your retirement savings.
Key Takeaways
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IRMAA is a high-income surcharge that can increase what you pay for Medicare Part B and Medicare Part D.
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Social Security typically uses the most recent tax return information provided by the IRS, often creating a two-year lookback effect for Medicare premiums.
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If your income dropped due to a qualifying life-changing event, you can request a reduction using Form SSA-44 with documentation.
Conclusion
IRMAA is not something to fear, but it is something to plan for, especially if your income is near the thresholds or you recently retired. A little proactive attention can prevent months of overpaying and reduce the chance of Medicare costs quietly draining your retirement budget, so have you checked whether IRMAA could affect your Part B or Part D premiums this year?
