IRMAA in 2026: Will a Higher Income Raise Your Medicare Premiums?

Most people on Medicare pay the same standard Part B premium, and in 2026 that base amount is $202.90 a month. But if your income is above a certain line, you pay more, and that extra amount has a name: the Income-Related Monthly Adjustment Amount, or IRMAA. It is not a penalty and it is not a separate bill you signed up for. It is simply a surcharge that higher-income beneficiaries pay on top of the standard premium for both Part B and Part D.

The part that surprises people is the timing. Your 2026 IRMAA is not based on what you earn in 2026. It is based on the income you reported two years earlier, on your 2024 tax return. That two-year look-back means a one-time bump in income, such as selling a home or taking a large retirement distribution, can raise your Medicare premiums well after the money is spent. The good news is that the rules are predictable, the thresholds are published each year, and if a life-changing event dropped your income, there is a formal way to ask Social Security to reconsider. This article walks through how IRMAA works in 2026, where the income lines fall, and what to do if the surcharge does not reflect your current reality.

What IRMAA is and why it exists

IRMAA stands for the Income-Related Monthly Adjustment Amount. It is an extra charge added to the premiums for Medicare Part B (which covers doctor visits and outpatient care) and Medicare Part D (prescription drug coverage). The word “adjustment” is the key: IRMAA does not replace your premium, and it does not change your Medicare benefits. It sits on top of the amount everyone pays.

The reason it exists comes down to how Medicare is funded. The standard Part B premium is designed to cover roughly a quarter of the program’s Part B costs, with general tax revenue covering the rest. Congress decided that beneficiaries with higher incomes should shoulder a larger share of that cost, so it created a sliding surcharge tied to income. The higher your income above the threshold, the larger the adjustment. Think of it as a means-tested add-on rather than a flat tax.

A few things are worth clearing up right away, because they cause a lot of confusion:

• IRMAA is not a one-time charge. It is a monthly amount, recalculated every year. A high income in one year does not lock you into higher premiums forever.
• It is not the same as the late-enrollment penalty. The Part D late-enrollment penalty is a separate, and permanent, charge that applies if you went without creditable drug coverage. IRMAA is about income, not timing.
• It applies whether you have Original Medicare or Medicare Advantage. Even if you get your benefits through a Medicare Advantage plan, you still pay the Part B premium, and IRMAA still applies to it if your income is high enough.

In short, IRMAA is the mechanism that makes Medicare premiums income-sensitive at the top of the income scale. For most beneficiaries it never comes up, because most incomes fall below the threshold. But for those it does affect, it can add a meaningful amount to the yearly cost of coverage.

The 2026 income thresholds

For 2026, IRMAA begins once your modified adjusted gross income (MAGI) exceeds:

• $109,000 for an individual (single, head of household, or qualifying widow/widower), or
• $218,000 for a married couple filing jointly.

Those numbers rose from $106,000 and $212,000 in 2025. The thresholds are adjusted most years to keep pace with inflation, which is why they drift upward a little at a time. If your income sits at or below the line for your filing status, you are done: you pay only the standard $202.90 Part B premium in 2026 and no Part B or Part D surcharge.

It is worth emphasizing what the threshold is measured against. IRMAA is a cliff at each bracket, not a phase-in. Cross a threshold by a single dollar and the full surcharge for that bracket applies. This is different from how tax brackets work, where only the income above a line is taxed at the higher rate. With IRMAA, your total MAGI determines which bracket you land in, and the surcharge for that bracket applies in full. That is exactly why being just over a line matters so much, and why the two-year look-back and the appeal process, both covered below, are so important.

Married couples who file separately are treated differently and generally face the surcharge at much lower income levels, so if that is your situation it is worth checking your specific numbers rather than assuming the joint thresholds apply. To confirm the current figures for your own filing status, the authoritative sources are the Centers for Medicare & Medicaid Services 2026 fact sheet and Medicare.gov.

How the surcharge is tiered by income

IRMAA is not a single flat amount. It is tiered: there are several income brackets above the starting threshold, and the surcharge rises in steps as income climbs through them. Someone just over the first threshold pays a modest add-on. Someone in the top bracket pays a much larger one. The same tier structure applies to both Part B and Part D, so moving up a bracket raises both surcharges at once.

The chart below shows the shape of the system. The point is not the exact dollar figure in each higher tier, which changes year to year and should always be confirmed against the official source, but the pattern: below the threshold you pay only the standard premium, and above it the surcharge grows step by step.

Here is the same idea in table form. Again, the surcharge column is described qualitatively on purpose, because only the starting threshold and the standard premium are stated here as exact 2026 figures:

For married couples filing jointly, the same tier structure applies but starts at the $218,000 threshold. Because each step is a cliff, a small difference in income can move you from one row of this table to the next, which is the single most important thing to understand about how the surcharge behaves.

The two-year look-back, explained

This is the piece that trips people up the most. Your IRMAA for a given year is based on the income you reported two years earlier. So:

• Your 2026 IRMAA is set from your 2024 tax return.
• Your 2025 IRMAA was set from your 2023 return.
• Your 2027 IRMAA will be set from your 2025 return.

The reason is administrative. Social Security needs a completed, IRS-verified tax return to determine your income, and the most recent return the IRS has fully processed is usually two years old. If your 2024 return has not yet been shared with Social Security when it makes the determination, it may temporarily use your 2023 return and adjust later once the newer figure arrives.

The practical consequence is that IRMAA often reflects a version of your finances that no longer exists. Consider someone who worked full time through 2024, earned a high salary, and then retired in early 2026. Their 2026 Medicare premiums are set from that high 2024 income, even though they are now living on a much smaller retirement income. Without action, they would pay a surcharge based on money they are no longer earning.

That is not a bug you simply have to accept. It is precisely the situation the appeal process is designed for, and we cover it in detail below. The key takeaway for now is that IRMAA looks backward, so the income that matters for your premium is not this year’s, but the year from two years ago. Knowing that lets you anticipate a surcharge before the bill arrives, and it explains why a one-time event can echo forward into your Medicare costs.

What counts toward your MAGI

Because everything hinges on modified adjusted gross income, it helps to know roughly what goes into it. MAGI for IRMAA purposes is generally your adjusted gross income (AGI) plus any tax-exempt interest you received. AGI is the figure near the bottom of the first page of your federal return, after adjustments but before deductions.

That means a wide range of income sources can push you over a threshold, including:

• Wages and self-employment income
• Withdrawals from traditional IRAs and 401(k) accounts, including required minimum distributions
• Taxable pension and annuity income
• Capital gains, such as the profit from selling a home or investments above the excludable amount
• Dividends and taxable interest
• Tax-exempt interest, such as from municipal bonds, which does not show up in AGI but is added back for IRMAA
• The taxable portion of Social Security benefits

A few things that people expect to count often do not, or count differently. Distributions from a Roth IRA are generally not included in MAGI, which is part of why Roth accounts get so much attention in retirement-income planning. Qualified charitable distributions made directly from an IRA can reduce the taxable amount that lands in your AGI. None of this is tax advice, and the details matter, so anyone doing serious planning around these levers should work with a tax professional. The point here is simply that MAGI is broader than salary, and one-time events, capital gains, large retirement withdrawals, and even the sale of a property can all lift it into surcharge territory for a single year.

IRMAA hits both Part B and Part D

A common misconception is that IRMAA only affects the Part B premium. It affects both Part B and Part D, and they are billed a little differently.

For Part B, the surcharge is added to your standard premium. In 2026, that base is $202.90 a month, and IRMAA is layered on top of it. If you have Part B premiums deducted from your Social Security check, the combined amount, base plus surcharge, comes out automatically.

For Part D, the mechanics are slightly different. Your drug plan still charges its own premium, whatever that happens to be, and the Part D IRMAA is billed separately on top of it. Social Security typically collects the Part D surcharge the same way it collects the Part B amount, even though the underlying plan premium goes to your insurer. This is true whether you have a stand-alone Part D prescription drug plan or drug coverage bundled into a Medicare Advantage plan. In both cases, if your income is over the threshold, the Part D income-related adjustment applies.

It is worth noting that the Part D landscape changed in a big way starting in 2025, with a new annual out-of-pocket cap on covered drugs that rose to $2,100 in 2026. That cap is unrelated to IRMAA, but it matters for anyone weighing total drug costs. IRMAA is about what you pay to have the coverage; the out-of-pocket cap is about what you pay when you use it. For a fuller picture of how the 2026 numbers moved, our overview of what changed with 2026 Medicare costs puts the premiums, deductibles, and the drug cap side by side.

How you find out you owe it

You do not apply for IRMAA and you do not calculate it yourself. Social Security notifies you. If the agency determines, based on your two-year-old tax return, that your income is above the threshold, it mails you a predetermination or initial determination notice. That letter explains which income figure it used, which year the figure came from, and what your adjusted premium will be for the year.

This letter is important, and it is worth reading closely rather than filing away, for two reasons:

1. It tells you the income figure being used. If that number is wrong, or comes from a year that no longer represents your situation, the letter is your starting point for a correction or appeal.
2. It sets your monthly cost. The surcharge usually shows up as a larger Part B deduction from your Social Security payment, plus a separate Part D amount, so the notice is your advance warning of the change.

Because IRMAA is recalculated annually, you may receive a new determination each year as fresh tax data arrives. If your income has dropped back below the threshold, a later year’s determination will reflect that, and the surcharge for that year simply will not apply. In other words, IRMAA is not a status you are stuck in; it is a yearly calculation that can move up or down with your income. If you receive a determination you believe is incorrect or outdated, do not ignore it, because there is a defined window to respond, which brings us to the appeal process.

Appealing after a life-changing event with Form SSA-44

Here is the relief valve built into the system. If a life-changing event reduced your income after the tax year Social Security is using, you can ask the agency to base your IRMAA on a more recent year instead. The tool for this is Form SSA-44, the “Medicare Income-Related Monthly Adjustment Amount — Life-Changing Event” form, filed with the Social Security Administration.

Social Security recognizes a specific list of qualifying life-changing events, which generally includes:

• Retirement or reduced work hours that lowered your income (often called “work stoppage” or “work reduction”)
• Marriage
• Divorce or annulment
• Death of a spouse
• Loss of income-producing property through events outside your control, such as a disaster
• Loss or reduction of certain pension income
• A settlement or termination from an employer, such as a closure or bankruptcy

The logic is that these events change your ongoing income in a way the two-year-old tax return cannot capture. Retirement is the most common one we see. Someone earned a high salary in 2024, retired, and their 2026 income is a fraction of what it was, yet their 2026 premium is set from that 2024 salary. Form SSA-44 lets them tell Social Security, “that year no longer reflects my situation; please use my expected current income instead.”

How the appeal works

To file, you complete Form SSA-44, indicate which life-changing event applies, provide an estimate of your modified adjusted gross income for the more recent year, and attach supporting documentation. Useful documents depend on the event and can include things like a signed statement about your retirement date, a marriage or death certificate, a divorce decree, or evidence of the income change. You submit the form to Social Security, and there is no fee to do so.

There is also a separate path if the problem is not a life-changing event but simply wrong or outdated information. If Social Security used an incorrect income figure, or the IRS later corrected your return, you can request a reconsideration of the determination rather than filing SSA-44. Either way, the notice you received explains your appeal rights and the deadline to respond, so acting promptly matters.

A realistic expectation helps here. An appeal is not automatic approval; Social Security reviews the event and the documentation and then decides. But for clear-cut cases, especially retirement, the process exists precisely so that people are not charged a surcharge based on income they no longer have. If you are unsure whether your situation qualifies or which documents to gather, the official SSA guidance on Medicare premiums and IRMAA is the place to confirm the current rules before you file.

Planning ahead to soften IRMAA

Because IRMAA is driven by a specific income figure in a specific year, some of its impact is foreseeable, and a few general strategies come up again and again in retirement-income conversations. None of the following is tax or investment advice, and the right move depends entirely on your own situation, but these are the levers people discuss with their tax professionals:

• Watch the cliffs around one-time income. Because each bracket is a cliff, a large one-time event, selling a property, converting a large sum to a Roth, taking an unusually big withdrawal, can tip you over a threshold for a single year. Knowing the two-year look-back lets you anticipate the effect before it shows up on your premium.
• Mind the timing of withdrawals. Spreading distributions across years, rather than taking a large lump in one year, can keep MAGI under a threshold. Required minimum distributions limit how much control you have, but the timing of discretionary withdrawals is often flexible.
• Consider the role of Roth accounts. Because qualified Roth withdrawals generally do not count toward MAGI, some retirees weigh Roth conversions in lower-income years against the risk of pushing income up in the conversion year itself. It is a genuine trade-off, not a free lunch.
• Remember tax-exempt interest still counts. Municipal bond interest is added back for IRMAA even though it is not in your AGI, so “tax-free” income is not IRMAA-free.
• Keep the appeal in your back pocket. If a life-changing event is coming, such as a planned retirement, know that Form SSA-44 exists so you are not surprised by a surcharge tied to your old salary.

The broader point is that IRMAA rewards a little foresight. The thresholds are published in advance, the look-back is predictable, and the appeal process is documented. For most people the surcharge never applies at all. For those near a threshold, understanding how MAGI is built, and what pushes it up in a single year, is often enough to avoid an unwelcome surprise. Always confirm the current figures and rules with the official sources, because the numbers are updated each year.

How we help

IRMAA sits at the intersection of Medicare and personal finances, and that is exactly where a plain, honest conversation helps most. We can walk you through how the 2026 thresholds apply to your filing status, explain how the surcharge would affect both your Part B premium and your Part D drug coverage, and help you understand your options across Medicare Advantage and the rest of your coverage. If a life-changing event has lowered your income, we can point you to the right form and the documentation Social Security looks for, so you can file a clean appeal. There is no fee to review your options, and we take the time to make sure the picture is clear before you decide anything.

If you would like to talk it through, you can schedule a time with us and we will start with your situation, not a sales pitch.

Benefits Empire, led by Dani Jo Munger, is an independent agency and is not connected with or endorsed by the U.S. government, Medicare, or CMS. We do not offer every plan available in your area. For a complete list of the Medicare plans you can choose from, contact Medicare.gov, call 1-800-MEDICARE, or reach out to your State Health Insurance Assistance Program (SHIP).

This article is educational information, not tax, legal, or investment advice. IRMAA thresholds and premium amounts are updated each year; verify the current figures for your situation with Social Security, the CMS 2026 fact sheet, or a qualified professional before making a decision.