IRMAA in 2026: How to Avoid — or Appeal — Medicare's High-Income Surcharges

If you did well in 2024 — sold a rental property on Amelia Island, took a big IRA distribution, or simply had a strong year of investment income — Medicare may be quietly preparing to charge you more in 2026. The mechanism is called IRMAA, the Income-Related Monthly Adjustment Amount, and it’s one of the most misunderstood costs in retirement. Most people don’t see it coming, because it’s based on a tax return filed nearly two years before the bill arrives.

Here on the First Coast, I talk with a lot of newly retired professionals, business owners, and couples who sold a home to downsize. They’re often surprised to learn that a single strong income year can raise their Medicare premiums for a full 12 months — and that a poorly timed Roth conversion or capital gain can push them across an invisible line. The good news: IRMAA is one of the few Medicare costs you can genuinely plan around, and when a life event knocks your income down, you can appeal it.

This guide walks through the complete 2026 IRMAA brackets, exactly how the surcharge is calculated, the eight events that let you file a Form SSA-44 appeal, and the practical timing moves that keep more people out of the higher tiers. This article is educational and not medical, tax, or legal advice — figures are current as of 2026 and change annually.

What IRMAA actually is

IRMAA is a surcharge added to your Medicare Part B and Part D premiums when your income is above a set threshold. It isn’t a separate bill or a penalty for doing something wrong — it’s simply Medicare’s way of asking higher-income beneficiaries to pay a larger share of their coverage. The standard Part B premium covers about 25% of the program’s real cost, with taxpayers covering the rest. IRMAA raises that share to as much as 85% for the top earners.

Two features make IRMAA sting more than people expect. First, it’s based on your income from two years ago — your 2024 tax return determines your 2026 premium. Second, it’s a cliff, not a gradual phase-in. Cross a threshold by a single dollar and the full surcharge for that tier applies. There’s no partial credit and no gentle ramp. That combination is why a one-time income spike — a home sale, a large distribution, an inheritance that generates a capital gain — can catch people completely off guard.

It’s also worth knowing what IRMAA is not. It doesn’t change your actual coverage, your deductible, or your benefits — it only changes the premium you pay. The 2026 Part B annual deductible is $283 whether or not you owe IRMAA, and the Part D out-of-pocket cap of $2,100 applies to everyone regardless of income. IRMAA is purely a premium adjustment, which is exactly why managing it comes down to managing income rather than changing plans.

If you’re new to how the parts of Medicare fit together, it’s worth reviewing the Medicare basics first — IRMAA sits on top of Part B and Part D specifically, and doesn’t touch Part A (which most people get premium-free).

The two-year lookback: why 2024 income sets your 2026 premium

The Social Security Administration (SSA) determines your IRMAA using the most recent tax return the IRS has shared with them — and because of filing and processing timelines, that’s your return from two years prior. So:

• Your 2026 Medicare premiums are based on your 2024 MAGI.
• Your 2027 premiums will be based on your 2025 MAGI.

This lag is the single most important thing to understand about IRMAA, because it means the planning window is now, not when you enroll. By the time the surcharge appears on your statement, the income year that caused it is long closed. You can’t undo a 2024 capital gain in 2026 — but you can plan your 2025 and 2026 income to protect your premiums two years down the road.

The figure Medicare uses is modified adjusted gross income (MAGI): your adjusted gross income (AGI) from line 11 of your Form 1040, plus any tax-exempt interest (municipal bond income, for example). That last part surprises people — tax-free muni interest is invisible on your tax bill but still counts toward IRMAA.

The complete 2026 IRMAA brackets

The Centers for Medicare & Medicaid Services (CMS) released the final 2026 figures on November 14, 2025. For 2026, the income thresholds rose about 3% for inflation, while the surcharge amounts themselves jumped roughly 9% — so even if your income held steady, your IRMAA may have increased. Here is the full picture for single filers and married couples filing jointly.

Part B: total monthly premium by tier

Part D: monthly surcharge by tier

Part D IRMAA is billed separately from your drug plan premium — usually deducted from your Social Security check or billed by Medicare directly, even though you pay your plan’s base premium to a private insurer. Learn more about how coverage is structured on our Part D overview.

A note for married couples filing separately: your brackets are compressed and punishing. If you file separately and lived with your spouse at any point during the year, you pay $0 only up to $109,000 of MAGI, then jump almost immediately to the second-highest tier ($446.30 Part B IRMAA plus $83.30 Part D) from $109,000 to $391,000, and the top tier above that. Filing separately rarely helps with IRMAA and often hurts.

Standard

$202.90

Tier 1

$284.10

Tier 2

$405.80

Tier 3

$527.50

Tier 4

$649.20

Tier 5

$689.90

Source: CMS, 2026 Medicare Parts A & B Premiums and Deductibles.

What IRMAA really costs — for a person and a couple

The tier amounts are per person, per month, and they apply to both Part B and Part D. That’s why IRMAA adds up faster than the numbers first suggest — especially for a married couple, where both spouses on Medicare each pay their own surcharge based on the same joint income.

Consider a couple whose 2024 joint MAGI was $280,000. That lands them in Tier 2 (over $274,000). Each spouse pays an extra $202.90 in Part B IRMAA plus $37.50 in Part D IRMAA every month. Here’s the annual math:

That’s nearly $5,770 a year in surcharges alone — on top of their standard premiums — because their income crossed into the third bracket. And they’d owe it for all of 2026 even if their 2025 or 2026 income dropped sharply. This is the heart of why timing matters: the couple above was only about $6,000 of MAGI into Tier 2. Had they managed their 2024 income down below $274,000, they’d have paid roughly half as much.

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

Here’s the part most people miss: if your income has dropped because of a qualifying life-changing event, you don’t have to wait two years for Medicare to catch up. You can file Form SSA-44, “Medicare Income-Related Monthly Adjustment Amount — Life-Changing Event,” and ask SSA to use your more recent, lower income instead of the two-year-old return.

This matters enormously for people who retire. If you earned $200,000 in 2024 while working but stopped working in 2025, the two-year lookback would otherwise stick you with a surcharge in 2026 based on income you no longer have. Work stoppage is exactly the kind of event SSA-44 is designed to fix.

The list of qualifying events is closed — SSA recognizes eight, and only eight:

Notice what’s not on the list: a one-time capital gain from voluntarily selling a home or investment, a Roth conversion, or a large IRA withdrawal you chose to take. Those are not life-changing events, so you generally cannot appeal an IRMAA caused by a discretionary income spike. That’s precisely why those events have to be planned rather than appealed.

How to file

You can download Form SSA-44 from SSA.gov, complete it with your estimated reduced MAGI for the current year, attach documentation of the event, and either mail it to your local Social Security office or bring it in. You don’t have to wait for an IRMAA determination letter — if you know a qualifying event has already lowered your income, file promptly. Appeals commonly take 30 to 90 days, and approved adjustments can be retroactive to the date of the event, sometimes generating a refund of premiums you overpaid.

Planning moves that keep you out of the higher tiers

Because a discretionary income spike usually can’t be appealed, the real work is proactive: managing the income that lands on your 2024, 2025, and 2026 returns so you don’t cross a threshold you didn’t need to. Here are the levers I most often help clients coordinate.

Time Roth conversions deliberately

Converting a traditional IRA to a Roth is one of the best long-term tax moves available — but every dollar converted is ordinary income in the year you convert, and it counts fully toward IRMAA. The strategy isn’t “don’t convert”; it’s “convert up to a target.” Many households do partial conversions in the years before Medicare starts (when IRMAA doesn’t yet apply), or fill up a specific IRMAA tier deliberately — converting exactly enough to reach, but not exceed, a chosen threshold. Coordinating this with your Social Security claiming decision matters, because benefits, conversions, and required distributions all stack into the same MAGI.

Smooth income across years

If you have discretion over when income lands — realizing capital gains, taking distributions beyond your required minimum, or recognizing business income — spreading it across two tax years can keep any single year under a threshold. Selling a Jacksonville rental property in a single tax year, for example, can spike MAGI dramatically; an installment sale or careful timing can soften the hit.

Mind the widow’s cliff

When one spouse dies, the survivor eventually files as a single taxpayer — with thresholds roughly half of the joint ones. The same income that kept a couple comfortably under $218,000 can push a surviving spouse well past $109,000. Planning for this transition is part of coordinated retirement-income work, and it’s one reason survivor planning and Medicare planning belong in the same conversation.

$218k

Tier 1 start

$274k

Tier 2 start

$280k

Their MAGI

Source: CMS 2026 thresholds; illustrative example.

Use tax-advantaged accounts before Medicare

Qualified charitable distributions (QCDs) from an IRA satisfy required minimum distributions without adding to MAGI — a powerful IRMAA tool for the charitably inclined. Health Savings Account withdrawals for medical costs are also tax-free and don’t count. And Roth withdrawals, once you’ve had the account long enough, don’t add to MAGI at all — which is the long game behind those earlier conversions.

How Social Security and Medicare timing fit together

As a Registered Social Security Analyst® (RSSA®), I look at IRMAA as one piece of a larger income puzzle rather than an isolated Medicare cost. When you claim Social Security, when you convert to Roth, when you take distributions, and when you enroll in Medicare all pour into the same MAGI bucket — and that bucket determines your surcharge two years later.

That’s the advantage of coordinating both sides under one roof. A claiming strategy that looks great in isolation might push you into a higher IRMAA tier; a Roth conversion plan that ignores Medicare might quietly raise your premiums. Designing them together — with a clear view of the IRMAA thresholds and your projected income — is how you avoid the expensive surprises. For families across Northeast Florida and Camden County, Georgia, that integrated view is exactly what I try to bring to the table.

Common IRMAA mistakes I see

• Assuming it’s permanent. IRMAA is recalculated every year against a fresh tax return. A high-income year raises your premium for 12 months, then it resets. One spike doesn’t lock you in forever.
• Forgetting muni-bond interest. Tax-exempt interest is added back into MAGI. “Tax-free” income isn’t IRMAA-free.
• Filing separately to save taxes. For couples who lived together, married-filing-separately triggers brutally compressed IRMAA brackets. Run both scenarios before you file.
• Not appealing a retirement. People who stopped working routinely overpay because they never filed Form SSA-44. If you retired, check whether an appeal applies.
• Planning after the fact. By the time the surcharge appears, the income year is closed. The window to act is the income year itself — ideally two years before the premium hits.

Frequently asked questions

Does IRMAA apply if I’m still working past 65? It can. IRMAA is based on income, not employment status. If your MAGI is above the threshold, the surcharge applies whether that income comes from wages, investments, or distributions. Some people who keep employer coverage delay Part B enrollment while working — a separate decision worth reviewing against the Medicare enrollment rules.

Is IRMAA the same for Part B and Part D? No. They’re calculated on the same income tiers but are different dollar amounts, and they’re billed separately. You can owe both at once.

What if my income was high because of a one-time event I chose? Discretionary spikes — a home sale, a Roth conversion, a large voluntary withdrawal — generally can’t be appealed, because they aren’t on the closed list of life-changing events. That’s why they need to be planned in advance.

Will these numbers change? Yes. Thresholds and surcharge amounts are updated annually. The figures here are current as of 2026 and released by CMS; always confirm the current-year brackets before making decisions.

Let’s make sure IRMAA doesn’t catch you off guard

IRMAA rewards people who plan ahead and quietly penalizes those who don’t. Whether you’re two years from Medicare and mapping out Roth conversions, newly retired and wondering whether you can appeal a surcharge, or a surviving spouse facing the widow’s cliff, the moves that help are the ones made before the income year closes.

If you’d like a clear, no-pressure look at where your income sits relative to the 2026 brackets — and whether a Form SSA-44 appeal or a timing strategy could help — I’d be glad to walk through it with you. As an independent RSSA® and Medicare-certified advisor serving Jacksonville, the First Coast, and Camden County, GA, I coordinate the Social Security and Medicare sides so they work together. Reach out for a free, no-obligation review and let’s build a plan that keeps more of your money where it belongs.

This article is educational and not medical, tax, or legal advice. IRMAA figures are current as of 2026 and change annually; confirm current thresholds before acting. Mere Benefits is not connected with or endorsed by the U.S. government or the federal Medicare program. We don’t offer every plan available in your area.