What Is IRMAA? How Medicare's Income Surcharge Can Cost You Thousands (2026 Guide)
What Is IRMAA? How Medicare’s Income Surcharge Can Cost You Thousands (2026 Guide)
By Rodney Cummings | Legacy Wealth Services | Updated May 2026
You’ve worked your whole life, saved diligently, and now you’re looking forward to Medicare coverage. Then the letter arrives from Social Security — your Medicare premium isn’t the standard rate. It’s hundreds of dollars more per month. For some retirees, that’s an extra $5,000 or more per year they never saw coming.
That letter is your IRMAA notice, and if you’re not planning for it, it can blindside even the most financially prepared retirees.
This guide explains exactly what IRMAA is, how it’s calculated, what the 2026 brackets look like, and — most importantly — what you can do right now to reduce or eliminate it.
What Is IRMAA? The Definition
IRMAA stands for Income-Related Monthly Adjustment Amount. It’s a surcharge added on top of your standard Medicare Part B and Part D premiums if your income exceeds certain thresholds.
In plain English: Medicare charges higher-income beneficiaries more for the same coverage. The Social Security Administration (SSA) reviews your tax return from two years prior and, if your income was above the threshold, adds a surcharge to your monthly Medicare premium — automatically, without asking.
IRMAA is not a penalty for doing something wrong. It’s simply Medicare’s income-tiered pricing structure. But that doesn’t make the surprise any less painful when you open that letter.
The key point: IRMAA is assessed on top of your standard premium. In 2026, the standard Medicare Part B premium is $202.90/month. If IRMAA applies to you, you could be paying anywhere from $284.10 to $689.80 per month — for the exact same Part B coverage.
How IRMAA Works: The 2-Year Lookback Rule
Here’s the detail that catches most retirees off guard: Medicare doesn’t look at your current income. It looks at your income from two years ago.
For 2026 Medicare premiums, Social Security is reviewing your 2024 tax return — specifically your Modified Adjusted Gross Income (MAGI).
Your MAGI includes:
- Wages, salaries, and self-employment income
- Social Security benefits (up to 85%)
- Pension and retirement distributions (including IRA and 401(k) withdrawals)
- Capital gains from investment sales
- Required Minimum Distributions (RMDs)
- Interest, dividends, and rental income
This two-year lag creates a dangerous blind spot. A retiree who sold a rental property, converted a large IRA to a Roth, or took a one-time distribution in 2024 may face a significantly higher Medicare premium in 2026 — even if their income has since returned to normal.
Example: Janet retired in 2023 and her income dropped substantially. But in 2024, she sold her vacation home and realized $180,000 in capital gains. Even though she’s now living on a modest fixed income in 2026, Medicare sees that 2024 return — and charges her the Tier 3 IRMAA rate.
2026 IRMAA Brackets: Part B Premiums
The following table shows the 2026 Medicare Part B IRMAA brackets based on your 2024 MAGI. These figures are CMS-verified.
| 2024 Individual MAGI | 2024 Joint MAGI | 2026 Monthly Part B Premium | Monthly IRMAA Surcharge |
|---|---|---|---|
| $109,000 or less | $218,000 or less | $202.90 | $0 |
| $109,001 – $137,000 | $218,001 – $274,000 | $284.10 | +$81.20 |
| $137,001 – $171,000 | $274,001 – $342,000 | $405.80 | +$202.90 |
| $171,001 – $205,000 | $342,001 – $410,000 | $527.50 | +$324.60 |
| $205,001 – $499,000 | $410,001 – $749,000 | $649.20 | +$446.30 |
| $500,000 or more | $750,000 or more | $689.80 | +$486.90 |
Source: Centers for Medicare & Medicaid Services (CMS), November 2025
Per-person note: These premiums apply to each Medicare beneficiary. A married couple — both on Medicare — at the Tier 4 level would pay $1,299.00/month combined just for Part B premiums.
2026 IRMAA Brackets: Part D Premiums
IRMAA also applies to your Medicare Part D (prescription drug) coverage. Unlike Part B, the Part D surcharge is added on top of whatever your plan’s premium already is.
| 2024 Individual MAGI | 2024 Joint MAGI | Monthly Part D IRMAA Surcharge |
|---|---|---|
| $109,000 or less | $218,000 or less | $0 |
| $109,001 – $137,000 | $218,001 – $274,000 | +$14.50 |
| $137,001 – $171,000 | $274,001 – $342,000 | +$37.50 |
| $171,001 – $205,000 | $342,001 – $410,000 | +$60.40 |
| $205,001 – $499,000 | $410,001 – $749,000 | +$83.30 |
| $500,000 or more | $750,000 or more | +$91.00 |
Source: CMS, November 2025
Who Gets Hit by IRMAA?
IRMAA is more common than most people realize — and it’s not just for the ultra-wealthy. You may be subject to IRMAA if:
- You had a high-earning final year of work before retiring
- You took a large IRA or 401(k) distribution in the lookback year
- You converted a Traditional IRA to a Roth IRA (the conversion amount counts as income)
- You sold appreciated assets — real estate, business interests, or a large stock portfolio
- Your Required Minimum Distributions (RMDs) are substantial due to decades of tax-deferred savings
- You received a one-time windfall — inheritance, bonus, or deferred compensation payout
The 2024 IRMAA income threshold of $109,000 (individual) sounds high, but in the year you retire or during years with unusual income events, it’s surprisingly easy to cross.
How to Calculate Your 2026 IRMAA Exposure
Follow these three steps to estimate your IRMAA situation:
Step 1: Pull Your 2024 Tax Return
Find your Adjusted Gross Income (AGI) on Line 11 of Form 1040, then add back any tax-exempt interest income. This gives you your MAGI.
Step 2: Find Your Bracket
Match your 2024 MAGI to the Part B and Part D tables above. Note whether you’re filing individually or jointly — the thresholds differ significantly.
Step 3: Calculate Your Annual Cost
Multiply the monthly surcharge by 12. If both spouses are on Medicare, multiply by 24.
Real-World Example:
- Couple, both on Medicare
- 2024 MAGI: $310,000 (joint) — Tier 3
- Part B surcharge: $202.90/person × 2 = $405.80/month extra
- Part D surcharge: $37.50/person × 2 = $75.00/month extra
- Total IRMAA cost: $480.80/month — or $5,769.60 per year
That’s nearly $6,000 in additional Medicare costs — for the same coverage a lower-income neighbor receives at the standard rate.
How to Appeal IRMAA: Life-Changing Event Exceptions
If your income has significantly decreased since the lookback year, you may be able to appeal your IRMAA determination using Form SSA-44 (Medicare Income-Related Monthly Adjustment Amount — Life-Changing Event).
Qualifying Life-Changing Events (LCEs)
The SSA recognizes the following events as grounds for an IRMAA appeal:
- Marriage, divorce, or death of a spouse
- Work stoppage or reduction (including full retirement)
- Loss of income-producing property (e.g., a property destroyed in a natural disaster)
- Loss of pension income
- Employer settlement payment received in the lookback year
How to File an IRMAA Appeal
- Complete Form SSA-44 — available at SSA.gov or your local Social Security office
- Provide documentation of the life-changing event (retirement letter, divorce decree, death certificate, etc.)
- Submit to your local SSA office — in person or by mail
- Request a new income estimate — SSA will use your more recent, lower income to recalculate your premium
Important: An appeal is not guaranteed. You must demonstrate that a qualifying event caused a significant reduction in income. A Medicare planning specialist can help you build the strongest possible case.
5 Strategies to Reduce or Avoid IRMAA
The best time to address IRMAA is before it happens. Proactive income planning in the years leading up to Medicare enrollment — and throughout retirement — is the most effective defense.
1. Roth Conversion Laddering
Converting Traditional IRA funds to a Roth IRA in lower-income years (before Medicare enrollment or during early retirement) reduces future RMDs. Since Roth distributions are tax-free and don’t count toward MAGI, they don’t trigger IRMAA. The key is timing conversions to stay below IRMAA thresholds each year.
2. Strategic Capital Gains Harvesting
Rather than realizing large gains in a single year, spread asset sales across multiple tax years. Keeping annual MAGI below the $109,000 (individual) or $218,000 (joint) threshold avoids IRMAA entirely.
3. Qualified Charitable Distributions (QCDs)
If you’re 70½ or older, you can donate up to $105,000 per year directly from your IRA to a qualified charity as a QCD. This satisfies your RMD requirement without the distribution counting as taxable income — keeping your MAGI lower.
4. Pre-RMD IRA Drawdown
In the years between retirement and age 73 (when RMDs begin), consider drawing down your traditional IRA strategically. Smaller, planned distributions now can prevent larger, IRMAA-triggering RMDs later.
5. File an SSA-44 Appeal When Income Drops
If you’ve recently retired or experienced another qualifying life-changing event, don’t wait. File Form SSA-44 immediately and provide documentation of your lower current income. You may be able to reduce your premium for the current year.
Common IRMAA Mistakes to Avoid
Even financially savvy retirees make these errors:
- ❌ Ignoring the 2-year lookback. Planning your income for “this year” doesn’t help if Medicare is looking at two years ago.
- ❌ Doing a large Roth conversion without considering IRMAA. A conversion that pushes you into the next bracket can cost thousands in added premiums.
- ❌ Selling appreciated assets without income modeling first. A single real estate sale can trigger IRMAA for two consecutive years.
- ❌ Missing the SSA-44 appeal window. You can appeal, but many retirees don’t know the form exists.
- ❌ Assuming IRMAA is permanent. It’s reassessed every year. One high-income year doesn’t mean you pay surcharges forever.
- ❌ Not coordinating with a Medicare specialist. IRMAA planning sits at the intersection of tax strategy and Medicare enrollment — it requires both lenses.
IRMAA and Medicare Supplement vs. Medicare Advantage
One more thing worth knowing: IRMAA applies regardless of whether you choose Original Medicare (with a Supplement) or Medicare Advantage. If your income triggers IRMAA, you pay the surcharge no matter which Medicare path you choose.
This makes it even more important to factor IRMAA into your total Medicare cost projection — not just your plan premium, but your actual all-in monthly cost.
The Bottom Line: IRMAA Is Manageable — With the Right Planning
IRMAA isn’t a punishment. It’s a predictable, rules-based system. And because it’s predictable, it’s also plannable.
The retirees who avoid IRMAA surprises aren’t necessarily those with lower incomes — they’re the ones who worked with an advisor to model their income in the years leading up to Medicare, made strategic decisions about Roth conversions and asset sales, and knew exactly what to do when a life-changing event occurred.
At Legacy Wealth Services, we help Oregon retirees navigate the full picture: Medicare plan selection, IRMAA exposure analysis, Social Security optimization, and the income planning strategies that tie it all together. We work with a wide range of Medicare carriers — Advantage plans, Supplements, and Part D — so you get unbiased guidance, not a sales pitch.
📅 Book Your Free Medicare Review
If you’re turning 65, already on Medicare, or planning a significant financial move that could affect your 2026 or 2027 premiums, let’s talk before it costs you.
→ Schedule a Free Medicare Review with Rodney Cummings
Or call us directly: 503-832-8555
We’ll review your income picture, identify your IRMAA exposure, and build a strategy to keep your Medicare costs as low as possible — now and throughout retirement.
Legacy Wealth Services is an independent insurance and financial services firm serving Oregon retirees. Rodney Cummings, Owner. OR License #18847712. This content is for educational purposes only and does not constitute tax or legal advice. Consult a qualified tax professional for advice specific to your situation.