You may open your Medicare premium notice and see a higher amount than expected due to Medicare IRMAA adjustments. This additional charge applies to certain beneficiaries based on income levels used to determine premium amounts.
Many retirees are surprised when their Medicare costs increase without an obvious explanation at first glance. Understanding how IRMAA works helps clarify why premiums change and how income affects what you pay.
This guide explains what Medicare IRMAA is, how the 2026 brackets work, and how it is applied to your premiums. It also outlines options available to reduce or appeal your determination if your circumstances change.
What Is Medicare IRMAA?
IRMAA stands for Income-Related Monthly Adjustment Amount. It is an additional premium that higher-income Medicare beneficiaries pay on top of the standard Medicare Part B and Part D premiums.
Think of IRMAA as a means-tested layer built into Medicare. The federal government uses your income to determine how much of your Medicare costs the program subsidizes. Earn above certain thresholds and your out-of-pocket premium increases, tier by tier.
According to the Centers for Medicare and Medicaid Services (CMS), some Medicare beneficiaries are required to pay Income-Related Monthly Adjustment Amount (IRMAA) surcharges based on their income levels. This figure grows each year as more retirees cross income thresholds through RMDs, capital gains, and other retirement income sources.
IRMAA applies to both Medicare Part B (medical coverage) and Medicare Part D (prescription drug coverage). Many retirees assume it only affects Part B. Both are subject to the adjustment, which means the financial impact is often larger than people initially realize.
This is not a penalty. It is a program design decision. That said, we completely understand why it can feel like one when the notice arrives unannounced.
How Is IRMAA Collected?
IRMAA is not billed separately. The surcharge is added directly to your Medicare premiums.
For most beneficiaries, Medicare Part B premiums are deducted automatically from Social Security benefits. If you pay Medicare directly, the IRMAA surcharge will be included in your monthly bill.
For Medicare Part D, the surcharge is paid separately from your plan premium in most cases and is collected by Medicare rather than the insurance carrier providing your prescription drug coverage.
Understanding how IRMAA is collected can help avoid confusion when premium amounts suddenly increase.
What Are the Medicare IRMAA Brackets for 2026?
The Social Security Administration (SSA) assigns your IRMAA tier based on your income from the two years prior. For 2026, that reference point is your 2024 federal tax return.
Your filing status also matters. The income thresholds differ for individuals filing single versus married couples filing jointly. Here are the 2026 IRMAA brackets for Medicare Part B:
| 2024 Individual Income | 2024 Joint Income | Monthly Part B Surcharge | Total Monthly Part B Premium |
| Up to $106,000 | Up to $212,000 | $0 | ~$185.00 |
| $106,001 – $133,000 | $212,001 – $266,000 | ~$74.00 | ~$259.00 |
| $133,001 – $167,000 | $266,001 – $334,000 | ~$185.00 | ~$370.00 |
| $167,001 – $200,000 | $334,001 – $400,000 | ~$278.00 | ~$463.00 |
| $200,001 – $500,000 | $400,001 – $750,000 | ~$370.00 | ~$555.00 |
| Above $500,000 | Above $750,000 | ~$443.00 | ~$628.00 |
Figures reflect 2026 CMS guidelines. IRMAA brackets adjust annually. Always verify current amounts at Medicare.gov or with your Medicare advisor.
A married couple at the highest IRMAA tier can pay over $10,600 more per year in Part B premiums alone compared to a couple just below the first threshold, and that figure doubles when Part D surcharges are added. Seeing the actual dollar figures is what makes IRMAA real for most people we work with.
Are you confident about which bracket your 2024 income places you in? That question alone is worth exploring before your next premium notice arrives.
How Does Medicare Determine Your IRMAA – The Two-Year Lookback Rule
Here is the detail that catches even financially prepared retirees off guard.
The SSA does not assess your current income. Instead, it pulls your income data directly from the IRS using your tax return from two years prior. This is the two-year lookback rule, and it creates a disconnect that surprises nearly everyone the first time they encounter it.
For 2026, your IRMAA determination is based entirely on your 2024 tax return. If your income was elevated in 2024 due to a business sale, a large Roth conversion, or an unusually high RMD, you may be paying a higher premium right now, even if your income has since dropped substantially.
One important reassurance: IRMAA is not permanent. The SSA redetermines your tier each year based on updated IRS data. If your income decreases, your surcharge can decrease the following year.
What Income Counts Toward Your MAGI for IRMAA Purposes?
The SSA uses your Modified Adjusted Gross Income (MAGI), which is broader than most retirees expect. For IRMAA purposes, MAGI includes:
- Wages and self-employment income
- Required Minimum Distributions (RMDs)
- Taxable Social Security benefits
- Short-term and long-term capital gains
- Roth IRA conversion amounts
- Rental and other passive income
Those last two items catch many retirees by surprise. A single large Roth conversion can push your MAGI into a higher IRMAA bracket two years later, even if your day-to-day income is modest. Understanding what flows into your MAGI number is the foundation of every effective IRMAA planning conversation we have with clients.
Can You Appeal Your Medicare IRMAA Determination?
If your income has decreased since the tax year the SSA is using, you may be able to request an immediate income review. The SSA recognizes specific qualifying life-changing events that can trigger a redetermination outside of the annual cycle.
Qualifying events include:
- Death of a spouse
- Marriage, divorce, or annulment
- Work stoppage, retirement, or a significant reduction in work hours
- Loss of income-producing property
- Reduction or loss of pension income
To initiate an appeal, you complete SSA Form SSA-44 and submit it to your local Social Security office with supporting documentation that confirms the event and your new income level.
Here is a quick scenario that illustrates the process: a recently widowed client came to us after her husband passed away, leaving her with significantly lower household income. Her IRMAA determination was still based on their combined income from two years prior. After filing the SSA-44 using the life-changing event provision, her surcharge was eliminated within 60 days.
Not every appeal results in a reduction. The SSA evaluates each case against specific qualifying criteria. Understanding whether your situation meets those criteria is the critical first step, and one worth taking sooner rather than later.
You may also request a reconsideration if you believe the Social Security Administration used incorrect income information or applied the wrong tax return when calculating your IRMAA. In these situations, supporting tax documentation may be required to verify the correction.
How to Reduce Your Medicare IRMAA – Planning Strategies Worth Knowing
IRMAA is as much a planning problem as it is a Medicare issue. With a thoughtful income strategy, you may be able to lower your bracket or avoid the surcharge in future years. Here are four approaches worth discussing with a qualified advisor:
- Time your Roth conversions carefully. Roth conversions reduce future RMDs and taxable income over the long term, but the conversion amount counts toward MAGI in the year it occurs. Converting too aggressively in a single year can push you into a higher IRMAA bracket two years later.
- Use Qualified Charitable Distributions (QCDs). If you are 70.5 or older, QCDs allow you to direct up to $105,000 per year from your IRA directly to a qualifying charity. That amount satisfies your RMD requirement without flowing through your taxable income – keeping your MAGI lower.
- Smooth income across tax years. Spreading large income events across multiple years can help you stay below IRMAA thresholds. A spike in a single year has consequences that follow you for two years of Medicare premiums.
- Request a redetermination when income drops. Retirement, reduced work hours, or another qualifying life event does not require you to wait for the annual cycle. Filing an SSA-44 promptly can accelerate your premium reduction.
Here is a quick scenario: a recently retired couple had sold their business two years prior, generating a one-time income spike. That single event placed their 2026 IRMAA at the third tier, adding roughly $370 per month combined to their Medicare costs, even though their current retirement income fell well below the first IRMAA threshold. With better planning, that outcome could have been structured differently.
Why Working With a Medicare and Retirement Income Advisor Matters
IRMAA sits at the intersection of tax strategy, income sequencing, and Medicare planning. No single lever works in isolation, and the wrong move in one area can create unintended consequences in another.
Working with an advisor who understands all three areas means your retirement income decisions are evaluated as a complete picture rather than in separate silos. That integrated approach is often where meaningful premium savings are found.
Knowledge Is Your Starting Point – Strategy Is What Comes Next
Medicare IRMAA is not a mistake or a penalty. It is a predictable part of the system that can be managed with the right strategy. Once you understand how income, timing, and the two-year lookback rule work together, you gain the ability to make smarter decisions that directly impact what you pay.
The difference often comes down to planning. From timing income events to knowing when to file an appeal, small adjustments can lead to meaningful savings over time. The earlier you review your situation, the more flexibility you have to stay in control of your Medicare costs.
Need help understanding your IRMAA bracket or reducing your Medicare premiums?
Contact Life143 to get personalized guidance from a licensed Medicare advisor. We help you evaluate your income strategy, identify opportunities to lower your IRMAA exposure, and choose coverage that aligns with your healthcare needs and long-term financial goals.
Frequently Asked Questions
Why is my Medicare premium higher than someone else’s?
Your premium may be higher due to IRMAA (Income-Related Monthly Adjustment Amount), which increases costs for higher-income beneficiaries based on past tax returns.
Does IRMAA apply to both Medicare Part B and Part D?
Yes, IRMAA affects both Part B (medical insurance) and Part D (prescription drug coverage), which can significantly increase your total monthly Medicare costs.
- RELATED: Medicare Part B vs. Part D
Can my IRMAA amount go down in the future?
Yes, IRMAA is recalculated annually. If your income decreases, your surcharge may be reduced or eliminated in future years, or sooner if you qualify for an appeal based on a life-changing event.
What life changes can affect an IRMAA determination?
Certain life-changing events may qualify you for an IRMAA reconsideration, including retirement, reduced work hours, marriage, divorce, the death of a spouse, loss of pension income, or the loss of income-producing property. If one of these events significantly reduces your income, you may be able to request a new determination using Form SSA-44.
How do I pay an IRMAA surcharge?
IRMAA is typically collected along with your Medicare premiums. Part B surcharges are often deducted from Social Security benefits, while Part D IRMAA amounts are generally billed separately by Medicare. The exact collection method depends on how you pay your Medicare premiums.
