Medicare IRMAA in 2026: The Brackets, the Surcharge, and How to Avoid It

Most retirees expect to pay a Medicare premium. What catches them off guard is the surcharge on top of it — sometimes thousands of dollars a year — triggered by a tax return they filed two years ago. That surcharge is called IRMAA, and the frustrating part is how avoidable it often is. Cross an income threshold by a single dollar and your premium jumps for the entire year.

The short answer: IRMAA (the Income-Related Monthly Adjustment Amount) is an income-based surcharge added to your Medicare Part B and Part D premiums. In 2026 it begins once your 2024 modified adjusted gross income passes $109,000 (single) or $218,000 (married filing jointly), and it climbs through five tiers from there. Because the brackets are cliffs and the income that counts is from two years prior, IRMAA is something you plan around before it happens — not after the bill arrives.

What is Medicare IRMAA?

IRMAA is a means test built into Medicare. Everyone on Part B pays a base premium; higher-income beneficiaries pay that base plus a surcharge for the identical coverage. The same applies to Part D prescription-drug coverage. The income used is your modified adjusted gross income (MAGI) — your adjusted gross income plus any tax-exempt interest — and it applies per person. A married couple who are both on Medicare each pay the surcharge, so the household cost is doubled.

2026 IRMAA brackets (Medicare Part B)

Here are the 2026 Part B premiums by income tier. The income shown is your MAGI from your 2024 tax return.

Why IRMAA is a “cliff” — and why one dollar matters

IRMAA is not a gradual phase-in. It is a series of cliffs. Cross the first threshold by a single dollar and your Part B premium jumps from $202.90 to $284.06 a month — about $974 more per year, per person. For a married couple who are both on Medicare, that is roughly $1,950 a year, and the Part D surcharge piles on more. The same all-or-nothing jump happens at every tier.

That is what makes IRMAA a planning problem rather than a tax to shrug off. The retiree who ends the year $500 over a threshold pays the same surcharge as someone $20,000 over. A little awareness in December can be worth more than a clever investment.

The two-year lookback that surprises people

IRMAA always looks back two years. Your 2026 premium is set by your 2024 MAGI; the Roth conversion you do this year will land on your 2028 premium. That delay is why IRMAA blindsides so many newly retired people: a final big year of work income, a large required minimum distribution, a home sale, or a one-time capital gain shows up on a Medicare bill two years later, long after the money is spent.

It is also why the years before age 73 matter. RMDs can push MAGI over a bracket once they begin, so the lower-income window beforehand — the same window behind the Retirement Red Zone — is when most IRMAA planning actually happens.

How to avoid or reduce IRMAA

You cannot change last year’s income, but you can shape the income that will land in a bracket two years from now. The moves that matter most:

1. Size Roth conversions to stop below the next cliff. A Roth conversion is taxable income that counts toward MAGI. Done deliberately, you fill a tax bracket without tipping into the next IRMAA tier; done carelessly, a conversion can cost thousands in extra premiums two years later.
2. Use Qualified Charitable Distributions. A QCD lets you satisfy an RMD by giving directly from your IRA to charity, and the amount never enters your MAGI — one of the few ways to meet an RMD without feeding IRMAA.
3. Draw on tax-free sources. Withdrawals from Roth accounts and HSAs, and properly structured cash-value life insurance, generally do not count toward MAGI. Building a layer of tax-free income gives you a lever to stay under a threshold in a high-spending year.
4. Spread one-time income across years. Selling a property, realizing large gains, or taking a big withdrawal in a single year can spike MAGI through a cliff. Splitting it across tax years can keep each year in a lower tier.

How to appeal IRMAA (Form SSA-44)

If your income has dropped since the tax year Medicare is using, you may not have to accept the surcharge. A life-changing event lets you appeal using Form SSA-44. Qualifying events include retirement or work stoppage, marriage or divorce, the death of a spouse, and loss of pension or income-producing property.

This is common for the newly retired: your 2024 income reflected a full salary, but you stopped working in 2025, so your real income is far lower than the figure setting your 2026 premium. File the SSA-44 with documentation, and the Social Security Administration can recalculate IRMAA on your current income instead.

Your IRMAA checklist

• Estimate your MAGI each year and check it against the brackets two years out.
• Before a Roth conversion or large withdrawal, confirm it will not tip you into the next tier.
• Use QCDs to keep charitable giving out of your MAGI.
• If you retired or had another life-changing event, file Form SSA-44 rather than overpaying.
• Remember the surcharge is per person — coordinate both spouses’ income, not just one.

IRMAA rewards people who see it coming. The retirees who avoid it are not earning less — they are timing income, conversions, and withdrawals so that no single year tips over a cliff. For more than two decades, Panic Proof Retirement™ has helped Metro Detroit households in Bloomfield Hills, Troy, Auburn Hills, and beyond coordinate those decisions across the whole retirement, not one tax year at a time. If you want your income mapped against the brackets before the next conversion or withdrawal, that is what our retirement-income and tax planning process is built to do.

This article is educational information, not individualized tax, legal, or investment advice. Medicare premiums, IRMAA thresholds, and surcharge amounts are set annually by CMS and are subject to change; 2026 figures are shown and based on 2024 income. Confirm your specific situation with a qualified advisor before acting.