How Retirees Can Avoid Higher Medicare IRMAA Premiums in 2026

By Margaret Chen, CFP®, MBA Finance

Certified Financial Planner (CFP®) • Updated June 25, 2026

The Medicare Cost Surprise That Catches Retirees Off Guard

You worked hard, saved diligently, and finally reached retirement. Then a letter from Medicare arrives telling you that your Part B premium isn’t the standard $185 per month everyone talks about—it’s $289.20. Or $504.90. Or worse. Welcome to IRMAA, the Income-Related Monthly Adjustment Amount, and in my 18 years of financial planning practice, I can tell you it’s the single most common “surprise” my retired clients face.

IRMAA is essentially a surcharge that higher-income Medicare beneficiaries pay on top of standard Part B and Part D premiums. For 2025, roughly 7% of Medicare beneficiaries pay these surcharges, according to the Social Security Administration. That might sound like a small group, but here’s what most people don’t realize: you don’t have to be wealthy to trigger it. A one-time Roth conversion, the sale of a rental property, or even required minimum distributions (RMDs) from a large IRA can push you over the threshold for a single year—and cost you thousands.

With new Medicare changes coming in 2026 and inflation pushing more retirees into higher income brackets, having a deliberate IRMAA strategy isn’t optional anymore. It’s essential. Let me walk you through exactly how to build one.

How Medicare IRMAA Actually Works

The Two-Year Lookback Rule

The most critical thing to understand about IRMAA is the timing. Medicare determines your 2026 premiums based on your 2024 Modified Adjusted Gross Income (MAGI), which you reported on your 2024 tax return filed in 2025. This two-year lookback catches people constantly because the income that triggers the surcharge happened long before the bill arrives.

Your MAGI for IRMAA purposes includes adjusted gross income plus tax-exempt interest income. That means municipal bond interest—which many retirees hold specifically for tax advantages—counts toward the IRMAA calculation even though it doesn’t show up on your regular tax bill.

2025 IRMAA Brackets and What They Cost

For individual filers in 2025, the standard Part B premium of $185 per month applies if your 2023 MAGI was $106,000 or below ($212,000 for married filing jointly). Cross that threshold, and the surcharges kick in across five tiers. At the highest tier—individual income above $500,000—you’re paying $628.90 per month for Part B alone, plus additional surcharges on Part D.

The 2026 brackets haven’t been officially published yet, but they typically adjust for inflation each fall. Based on recent CPI trends, I expect the first threshold to rise modestly, perhaps to $108,000 or $110,000 for individuals. But don’t count on bracket inflation to save you—the adjustments rarely keep pace with the income growth retirees experience from RMDs on portfolios that have appreciated over decades.

For a detailed breakdown of tactics to reduce these surcharges, check out this guide on 7 Ways to Manage Medicare IRMAA and Keep Premiums Low.

Your 7-Step IRMAA Playbook for 2026

What I tell my clients is simple: in retirement, managing your income is just as important as managing your investments. Here’s the step-by-step process I use with every client approaching or already in Medicare.

1. Calculate your projected 2024 MAGI immediately. If you haven’t filed your 2024 return yet, run the numbers now. If you have filed, pull up your Form 1040 and look at Line 11 (Adjusted Gross Income), then add back any tax-exempt interest from Line 2a. That total is your IRMAA-relevant MAGI. Compare it against the current brackets posted at Medicare.gov. If you’re within $5,000-$10,000 of a threshold, you have work to do for 2025’s income (which will affect 2027 premiums).
2. Map out every income source for 2025 right now. List Social Security benefits, pension payments, RMDs, rental income, dividends, capital gains distributions from mutual funds, and any part-time work income. I often see retirees forget about capital gains distributions that mutual fund companies pay in December—these can be substantial and push you over a bracket line at the last minute.
3. Execute strategic Roth conversions in the “gap years.” The sweet spot for Roth conversions is between retirement and age 73 (when RMDs begin under the SECURE 2.0 Act). During these years, your income may be lower, giving you room to convert traditional IRA funds to a Roth without triggering IRMAA. Every dollar you convert now is a dollar that won’t generate taxable RMDs later. I helped one client convert $50,000 per year over six gap years—saving her an estimated $3,200 annually in IRMAA surcharges once RMDs started.
4. Use Qualified Charitable Distributions (QCDs) once you’re 70½ or older. A QCD allows you to donate up to $105,000 directly from your IRA to a qualified charity in 2025. The distribution satisfies your RMD but doesn’t count as taxable income—meaning it doesn’t inflate your MAGI. If you’re already donating to your church, alma mater, or local food bank, routing those gifts through a QCD is one of the most powerful IRMAA-reduction tools available. For retirees navigating tight budgets while trying to eat well, this resource on food insecurity in seniors offers practical guidance on stretching every dollar.
5. Harvest capital gains strategically across multiple years. If you need to sell appreciated investments, don’t dump them all in one tax year. Spread sales across two or three years to keep each year’s MAGI below the next IRMAA tier. For example, if you have $120,000 in unrealized gains, selling $40,000 per year over three years could keep you in a lower bracket versus realizing it all at once.
6. Consider the timing of Social Security claiming. Delaying Social Security to age 70 increases your monthly benefit by 8% per year past full retirement age—but it also increases your taxable income once you start collecting. For some retirees, claiming at 67 and doing larger Roth conversions during ages 67-72 produces a better after-tax, after-IRMAA outcome over a 20-year retirement. This is where the math gets individual, and a CFP® or tax professional can model the scenarios for your specific situation.
7. File an IRMAA appeal if you’ve had a qualifying life-changing event. The SSA recognizes specific events—marriage, divorce, death of a spouse, work stoppage, work reduction, loss of income-producing property, or loss of pension—as reasons to use more recent income instead of the two-year-old return. You’ll file Form SSA-44 (Medicare Income-Related Monthly Adjustment Amount – Life-Changing Event). I’ve successfully helped clients reduce IRMAA premiums by over $4,000 per year through this appeal process after a spouse passed away and household income dropped significantly.

The Three Income Levers Most Retirees Overlook

Municipal Bond Interest

As I mentioned above, tax-exempt interest counts toward IRMAA calculations. I see retirees with $30,000-$50,000 in annual muni bond income who are shocked to learn it’s pushing them into a higher Medicare premium tier. This doesn’t mean you should abandon municipal bonds—the tax-free income is still valuable—but you need to factor that income into your IRMAA planning. Consider whether some of that allocation might work better inside a Roth IRA where it wouldn’t appear on your 1040 at all.

Capital Gains Distributions from Mutual Funds

Even if you don’t sell a single share, your mutual funds may distribute capital gains to you in November or December. In 2024, several large equity funds distributed gains equal to 5-12% of their net asset value. A $400,000 taxable fund position could generate $20,000-$48,000 in unexpected capital gains. Check your fund company’s distribution estimates each fall and consider tax-loss harvesting or switching to more tax-efficient index funds or ETFs.

The Social Security Taxation Cascade

Here’s a trap that catches nearly everyone: up to 85% of your Social Security benefits become taxable if your combined income exceeds $34,000 (individual) or $44,000 (married filing jointly). Once that happens, each additional dollar of IRA withdrawal effectively gets taxed at a higher marginal rate because it causes more of your Social Security to become taxable—which further inflates your MAGI—which can push you into a higher IRMAA tier. This cascading effect is why I always model income scenarios holistically rather than looking at any one source in isolation.

Real Numbers: What IRMAA Actually Costs Over a Retirement

Let’s put this in perspective. Suppose you’re a married couple, both on Medicare, and your MAGI lands at $220,000—just $8,000 above the first IRMAA threshold of $212,000. For 2025, each of you would pay an additional $74.00 per month for Part B, plus roughly $13.70 per month extra for Part D.

That’s $87.70 per person per month, or $175.40 per couple per month. Over 12 months, that’s $2,104.80 in extra premiums. Over a 25-year retirement, assuming similar overages, you’d pay approximately $52,620 in avoidable IRMAA surcharges—and that’s just the first tier. Higher tiers multiply this dramatically.

If that $8,000 in excess income came from a capital gains distribution or an RMD that could have been offset by a QCD, the math is painful. You essentially paid $2,104 in extra Medicare premiums because of $8,000 in income you could have managed differently. That’s an effective additional tax rate of 26.3% on top of whatever income tax you already owed.

Common Mistakes That Trigger Unnecessary IRMAA Surcharges

What I see most often is retirees making one of these avoidable errors:

• Selling a home without planning for the capital gain. The home sale exclusion ($250,000 individual / $500,000 married) helps, but many retirees have gains exceeding those limits, especially after decades of appreciation in markets like California, Florida, or the Northeast. This is particularly relevant if you’re considering aging in place versus selling—understanding the financial trade-offs matters, as explored in 6 Retirement Myths for 2026 That Could Cost Seniors Thousands.
• Taking large one-time IRA distributions for home renovations, a new car, or helping a grandchild with college. Consider spreading the withdrawal across two years or tapping Roth funds instead.
• Ignoring estimated capital gains distributions from mutual fund companies until the 1099 arrives in February—months too late to take corrective action.
• Failing to coordinate between spouses. If one spouse has significant IRA assets and the other has Roth accounts, drawing from the right account in the right year can make a meaningful difference in household MAGI.
• Not filing SSA-44 after a qualifying event. Many retirees don’t know the appeal exists, or they assume the process is too complicated. It’s a two-page form, and the SSA website provides clear instructions.

Building Your 2025-2026 Income Plan Today

The best time to manage your 2026 IRMAA exposure was throughout 2024. The second-best time is right now—by focusing on your 2025 income, which will determine your 2027 Medicare premiums, and by filing an SSA-44 appeal if applicable for 2026.

Start by sitting down with your tax professional or financial planner and building a multi-year income projection. Map your expected income from all sources for 2025, 2026, and 2027. Identify which years you’ll be closest to a bracket boundary. Then decide which levers to pull: Roth conversions, QCDs, capital gains timing, or account withdrawal sequencing.

In my practice, we review these projections quarterly. Retirement income planning isn’t a set-it-and-forget-it exercise. Markets move, tax laws change, and life happens. But with a deliberate approach, most retirees can save thousands of dollars in unnecessary Medicare surcharges while still maintaining the retirement lifestyle they worked decades to build.

IRMAA doesn’t have to be a surprise. With the right playbook, it becomes just another number you manage—and one that stays as low as possible.

About Margaret Chen, CFP®, MBA Finance

Certified Financial Planner (CFP®)

Margaret Chen is a Certified Financial Planner™ (CFP®) with more than 18 years of experience guiding American seniors through retirement planning, Social Security optimization, and Medicare decisions. She holds an MBA in Finance and has dedicated her career to helping retirees protect their savings, maximize their benefits, and avoid the most common financial mistakes that derail retirement. At Daily Trends Now, Margaret writes practical, fact-checked guides that translate complex financial topics into clear action steps for older Americans.