The $202.90 Number Most Retirees Don’t Know — and the Hidden Medicare Surcharge That Can Double Your Bill

WASHINGTON, June 23, 2026 —

Every year, millions of Americans on Medicare open their Social Security statement and notice their monthly payment is smaller than they expected. The culprit is rarely mentioned in open enrollment materials. It is a Medicare surcharge called the Income-Related Monthly Adjustment Amount — IRMAA — and in 2026, it is quietly adding hundreds or even thousands of dollars a year to the premiums of roughly 8% of all Medicare beneficiaries.

The standard Medicare Part B premium this year is $202.90 per month. That is an increase of $17.90 over 2025. Annualized, it means every Medicare enrollee is spending $214.80 more on Part B alone compared to last year. Add the annual deductible of $283 — up $26 from 2025 — and the baseline costs of Medicare coverage are climbing steadily even before a single doctor’s visit.

But for the roughly 1 in 12 beneficiaries who earned above a certain income threshold two years ago, the real number is far higher.

How IRMAA Works — and Why It Hits Without Warning

The Income-Related Monthly Adjustment Amount is not a penalty. It is a tiered surcharge structured by law, applied to Medicare Part B and Part D premiums, based on your Modified Adjusted Gross Income from two years prior. For 2026, that means your 2024 tax return determines what you pay today.

The threshold is lower than most people realize. Single filers who reported more than $109,000 in MAGI in 2024 face IRMAA automatically. For married couples filing jointly, the threshold is $218,000. Cross either line by a single dollar — from a stock sale, a Roth conversion, the sale of a rental property, even an inherited IRA distribution — and the surcharge kicks in immediately.

There is no warning before Medicare enrollment. There is no reminder when you file your taxes. The Social Security Administration sends a letter notifying you of the new premium, but by then, the calculation is already done.

The jump from no surcharge to the first tier costs a single beneficiary an extra $1,148 per year. For a married couple both on Medicare, that same income trip wire costs over $2,297 annually — every year it persists.

The Two-Year Lookback Is the Hidden Trap

Most retirees understand that Medicare premiums change annually. Fewer understand the mechanics of the lookback. The Social Security Administration uses your tax return from two years ago because it is the most recent fully filed and processed data available. The result is a system where income decisions you make in 2026 will not affect your Medicare premiums until 2028.

That gap creates both a risk and an opportunity. The risk: a retiree who takes a large distribution in 2024 — perhaps converting a traditional IRA to Roth, selling an investment property, or receiving a one-time distribution — may have had no idea in 2024 that the move would increase their 2026 Medicare costs. By the time the IRMAA letter arrives, the income event is long past. There is no way to undo it.

The opportunity: someone who retires in their early 60s, before Medicare begins at 65, has a window of potentially three to four years in which their income may be low enough to stay under the thresholds. Strategic retirement income planning during that window — including Roth conversions spread across multiple tax years rather than taken in a lump — can significantly reduce future Medicare costs.

Part D Prescription Drug Coverage and IRMAA

IRMAA does not stop at Part B. It also applies to Part D prescription drug coverage, with the same income brackets triggering separate surcharges on top of whatever a beneficiary pays for their stand-alone drug plan.

The average base monthly premium for Part D in 2026 is $38.99. For those subject to IRMAA, that number grows. At the first income tier, a single filer pays an additional $14.50 per month. At the highest tier — income above $500,000 for individuals — the Part D surcharge alone reaches $91.00 monthly.

Medicare supplement insurance, often called Medigap, does not carry an IRMAA. But beneficiaries enrolled in Medicare Advantage plans should check whether their plan costs interact with IRMAA in ways they have not accounted for.

Appealing an IRMAA Decision

The SSA does allow beneficiaries to appeal an IRMAA determination, but only under specific circumstances. You have 60 days from receiving the notice to file. Qualifying reasons for an appeal include a significant change in income due to a qualifying life-changing event — retirement, marriage, divorce, death of a spouse, or loss of income-producing property.

The appeal is filed using a specific federal form available from the Social Security Administration. It is not automatic. If your income dropped significantly in 2025 compared to 2024 — because you retired, for instance — you can request that SSA use your more recent income rather than the 2024 figure. Many beneficiaries who qualify for this relief never file because they do not know it exists.

Pro Tips a Generic Article Would Miss

1. Roth conversions in your early 60s are one of the most powerful Medicare cost reduction tools available. Most retirement income planning discussions focus on tax savings. Far fewer highlight the Medicare angle. Converting traditional IRA funds to Roth over several years before age 65 can permanently reduce your taxable income once Medicare begins — keeping you under the IRMAA threshold for years. Done systematically with a tax-advantaged savings strategy, the Medicare savings alone can justify the approach.

2. Bunching capital gains in an IRMAA year costs you twice. If you sell a rental property or liquidate a taxable investment account in a year when your MAGI already crossed an IRMAA threshold, you are paying both capital gains tax and elevated Medicare premiums. 401(k) diversification strategies that include a taxable brokerage account allow for more precise income control in the years before and during Medicare — giving you the ability to stay under thresholds rather than accidentally cresting them.

3. Married couples filing separately face a punishing IRMAA schedule. Couples who live together but file separate federal returns in 2026 face a dramatically compressed IRMAA schedule for Medicare. Any income above $109,000 triggers a premium of $649.20 per month — skipping every intermediate tier. This quirk of Medicare supplement insurance and IRMAA law catches many couples by surprise. Before choosing a separate filing status for any reason, run the Medicare cost calculation first.

FAQ

What is the Medicare Part B premium in 2026?
The standard monthly Part B premium in 2026 is $202.90. Higher-income beneficiaries pay additional IRMAA surcharges that can push the total monthly cost to $689.90.

What income triggers the Medicare IRMAA surcharge in 2026?
For 2026, IRMAA applies to single filers with a Modified Adjusted Gross Income above $109,000 and to married couples filing jointly with income above $218,000, based on 2024 tax returns.

Can you appeal a Medicare IRMAA surcharge?
Yes. You have 60 days from receiving your IRMAA notice to appeal with the Social Security Administration. Qualifying life-changing events — including retirement, divorce, or death of a spouse — allow you to request use of more recent income data.

How much did Medicare Part B increase in 2026?
The 2026 Part B premium of $202.90 represents an increase of $17.90 over the 2025 standard premium of $185.00. The annual deductible also rose $26, from $257 to $283.

How do I avoid the Medicare IRMAA surcharge?
The most effective strategy is managing your Modified Adjusted Gross Income during the two years before a surcharge year. Tools include spreading Roth conversions across multiple years, harvesting capital losses to offset gains, maximizing tax-advantaged savings accounts, and timing large distributions to avoid crossing bracket thresholds.

Review your 2024 tax return now and look at the IRMAA brackets above. If your MAGI landed anywhere near a threshold — or above one — contact a retirement income planning specialist before the end of 2026. The income decisions you make this year will set your 2028 Medicare costs, and that window for tax-advantaged savings optimization closes faster than most people realize.