Medicare’s 2027 Income Surcharge Tiers Start at $112,000 for a Single Retiree and $224,000 for a Couple. The Return That Decides It Was Filed Seven Months Ago, and Here’s Who Can Still Get Out of It
This post may contain links from our sponsors and affiliates, and Flywheel Publishing may receive compensation for actions taken through them.
In the next few weeks, Social Security will start mailing the letters that set next year’s Medicare premiums. Most retirees will only pay the base amount. About 8% of Part B enrollees will also see a surcharge called IRMAA, the income-related monthly adjustment amount. The income that triggers it was locked in on a tax return filed back in April. The 2027 surcharge tiers start at MAGI above $112,000 for individuals and above $224,000 for joint filers.
That’s the two-year lookback at work. Your 2027 premium is usually based on your 2025 return, which most people filed by April 15, 2026, about seven months ago. You can’t rewrite 2025 now. A specific group of retirees can, however, ask Social Security to set it aside.
Where 2027 Medicare Surcharge Tiers Start for Singles and Couples
As of this writing, the 2027 brackets are still pending publication. The lower thresholds are indexed to inflation, so the 2027 figures should sit a little above 2026’s. In 2026, surcharges begin at MAGI above $109,000 for individuals and above $218,000 for joint filers.
Under Social Security’s rules, MAGI is adjusted gross income plus tax-exempt interest income. Municipal bond interest counts as well.
| 2026 MAGI, Single | 2026 MAGI, Joint | Part B Monthly Premium | Part D Surcharge |
|---|---|---|---|
| Up to $109,000 | Up to $218,000 | $202.90 | $0 |
| $109,001 to $137,000 | $218,001 to $274,000 | $284.10 | $14.50 |
| $137,001 to $171,000 | $274,001 to $342,000 | $405.80 | $37.50 |
| $171,001 to $205,000 | $342,001 to $410,000 | $527.50 | $60.40 |
| $205,001 to under $500,000 | $410,001 to under $750,000 | $649.20 | $83.30 |
| $500,000 and up | $750,000 and up | $689.90 | $91.00 |
Going $1 Over a Line Raises Your Premium for the Whole Year
Picture a composite 67-year-old single retiree whose 2025 MAGI came to $120,000 from Social Security, an IRA withdrawal and some muni interest. If the 2027 tiers match 2026’s, her Part B premium rises from $202.90 to $284.10 a month. The Part B surcharge comes to $974.40 for the year. Add the $14.50 monthly Part D surcharge and she pays $1,148.40 extra.
The tiers work as cliffs. A retiree at $109,001 pays exactly what she pays at $120,000.
Couples pay twice, since each spouse is charged separately. A couple with joint MAGI of $280,000 lands in tier two, where each spouse pays $405.80 a month. That’s $4,869.60 a year in Part B surcharges, plus $900 for Part D.
Who Can Still Get Out of a 2027 Surcharge
Form SSA-44 lets you ask Social Security to use a more recent, lower income year if you had a qualifying life-changing event. Qualifying events include marriage, divorce, the death of a spouse, loss of income, and an employer settlement payment. On the form, the work-related categories cover stopping work or cutting your hours.
The classic case is the retiree who drew a full pay through 2025 and stopped working in 2026. The 2025 return shows a paycheck that no longer exists. Filing an SSA-44 with proof of the work stoppage lets Social Security price 2027 on her lower current income.
The other way out is an amended return. If a corrected 2025 return reduces your MAGI, Social Security tells you to call 800-772-1213 and request a recalculation.
A Roth conversion, a home sale or a big capital gain in 2025 generally won’t qualify, because Social Security treats those as choices rather than life-changing events. The upside is that IRMAA resets every year, so a one-time spike costs you only one year (we mapped IRMAA alongside the other premium traps that hit retirees in a free Medicare guide here).
Your 2026 Income Sets 2028 Premiums, and It Locks on December 31
Your 2026 income is still open for seven more weeks. Three moves count:
- Give through QCDs. If you’re 70½ or older, a qualified charitable distribution sends IRA money straight to charity, up to $111,000 in 2026. That money stays out of gross income and still counts toward your RMD.
- Size conversions to the tier line. Convert only up to the top of your current IRMAA tier, the same way you’d fill a tax bracket.
- Keep taking your RMD. Skipping it to hold down income triggers a 25% excise tax on the shortfall, or 10% if you correct it in time. Roth IRAs have no lifetime RMDs, which is one reason Roth money helps keep future MAGI under the lines.
The official 2027 figures from CMS usually come out in November. Then check your Social Security letter against your 2025 return before you assume the surcharge is final. A CPA or fiduciary advisor can run your conversion and QCD numbers against these tiers before year-end.
Contact [email protected] for any questions or corrections.
Vilma Rios is a tax professional, tax researcher, and financial writer with more than 15 years of experience in tax and accounting. Her work spans federal tax research, financial journalism, retirement planning, investment taxation, capital gains, inherited assets, and tax education. She specializes in translating complex tax and financial topics into clear, practical information that helps individuals, families, retirees, and investors make informed decisions.
She has presented tax information through webinars, including Spanish-language tax education, and has appeared on Telemundo 47 discussing tax topics and helping viewers understand important tax-filing requirements.
Her experience also includes tax and accounting work, tax research, IRS-related matters, and public tax education. While in college, Vilma volunteered in an IRS-sponsored tax assistance program and was recognized for her community service by local and state officials.
Known as "Your Tax Geek," Vilma is passionate about making taxes easier to understand and helping people navigate an increasingly complex tax system.
