Here is the odd thing about the IRMAA brackets 2027 will use: your income for that year is already set.
Medicare looks back two years, so your 2027 premium comes from the 2025 tax return you filed in 2026. That timing catches people off guard, especially anyone who retired or sold property in 2025. Below, I walk through the numbers, what a surcharge really costs, and what you can still do about it.
What Is IRMAA, and Why Does Your 2025 Income Set Your 2027 Premium?
IRMAA is the income-related monthly adjustment amount, an extra charge added to your Medicare Part B and Part D premiums.
Social Security applies it once your modified adjusted gross income passes a set threshold. Because the agency uses the most recent return on file, there is always a two-year lag. Your 2027 surcharge, then, rests on income you earned in 2025.
MAGI here means your adjusted gross income plus any tax-exempt interest. Several things do not count toward it, which surprises most people:
- Roth IRA withdrawals
- Qualified health savings account distributions for medical expenses
- Return of your own cost basis from a brokerage account
- Loan proceeds, including a reverse mortgage or a home equity line of credit
That short list is worth reading twice, because it shows you where planning room still exists.
The Confirmed 2026 IRMAA Brackets (Your Baseline)
Before looking ahead, start with the figures Medicare has actually published.
For 2026, the Centers for Medicare and Medicaid Services (CMS) set the standard Part B premium at $202.90 a month. The annual Part B deductible is $283, and surcharges begin above $109,000 single or $218,000 joint, based on 2024 income. Part D surcharges run from $14.50 to $91.00 a month on top of whatever your drug plan charges.
Joint thresholds are exactly double the single figures at every tier below the top one. The top tier starts at $500,000 single and $750,000 joint. It does not move with inflation, since federal law holds it in place through 2028.
These are the numbers to trust, and they are the honest starting point for any 2027 estimate.
Get a Free Medicare Supplement Quote
Projected 2027 IRMAA Brackets and Surcharges
No one can hand you final 2027 figures yet, and any site presenting them as settled is guessing.
CMS publishes official 2027 premiums and thresholds in late October or November of 2026. Until then, independent trackers estimate them from inflation data and the Medicare Trustees Report.
Those estimates put the first 2027 threshold near $111,000 to $113,000 for single filers. The 2027
Medicare Part B premium is projected at roughly $218.60.
The table below sets the confirmed 2026 amounts beside those projections.
Joint thresholds are double the single figures at every tier below the top. The 2027 column holds independent projections, not CMS figures.
Treat the right side of that table as a planning range, not a bill.
If You File Married Filling Seperately, Read This First
The single-filer table does not apply to you.
Married filers who lived with a spouse but filed separately face a compressed structure with three levels. In 2026, MAGI above $109,000 and below $391,000 pays $649.20 a month for Part B, plus $83.30 for Part D. At $391,000 or more, Part B reaches $689.90.
Filing separately, in other words, can cost far more than filing jointly.
How Much Does One Extra Dollar Cost You?
IRMAA works as a cliff, not a gentle slope.
Cross a threshold by a single dollar and you pay the full tier for all 12 months. In 2026, the first tier adds $81.20 a month to Part B and $14.50 to Part D. That comes to $1,148.40 for the year, per person.
For a married couple where both are enrolled, double it to $2,296.80. Higher tiers cost far more, since the top tier reaches $689.90 a month for Part B alone.
If your 2025 income landed near a threshold, pin down the exact figure.
Not sure which tier your 2025 income puts you in? Call Mel Fonseca directly at 720-669-3167 for a free, no-pressure review of your Medicare costs.
How to Appeal IRMAA With Form SSA-44
A surcharge built on income you no longer earn is not something you have to accept.
Social Security calls the remedy a new initial determination, and you request it with Form SSA-44. You name the qualifying event, give the date it happened, estimate your lower MAGI, and attach proof. Most decisions land in roughly 30 to 90 days, and an approved request can refund what you overpaid.
The Eight Qualifying Life-Changing Events
Social Security recognizes eight qualifying events, and the list is closed:
- Work stoppage, including full retirement
- Work reduction, such as fewer hours or lower pay
- Loss of income-producing property through disaster, fraud, or theft
- Loss of pension income
- Employer settlement payment after bankruptcy or reorganization
- Marriage
- Divorce or annulment
- Death of a spouse
One-time income spikes do not qualify on their own. A Roth conversion, a large withdrawal, a capital gain, or a business sale is a spike, not a life change. If your work status changed alongside a sale, file under work stoppage or work reduction instead.
If Social Security says no, you have 60 days to request reconsideration on Form SSA-561-U2. The ladder then runs to an administrative law judge, the Medicare Appeals Council, and federal court.
Documentation decides these requests, so gather it before you file.
Get a Free Medicare Advantage Quote
Select whether you would like quotes on Medicare Advantage and MAPD plans, or Part D prescription plans.
What You Can Still Control: Your Medigap Premium
Here is the part I most want you to hear.
You cannot shop away a surcharge on Part B and Part D, because it follows your income, not your plan.
What you can shop is the Medigap premium sitting on top of it. Federal law standardizes these plans, so a Plan G from one company matches a Plan G from another.
The difference comes down to price, service, and rate history. Two people with identical benefits can pay hundreds apart over a year, simply because no one compared carriers.
That gap is the piece of your Medicare budget still in your hands.
Schedule a free Medicare plan review and compare Medicare supplement rates from multiple carriers. Or call Mel Fonseca directly at 720-669-3167.
Frequently Asked Questions
Q: When will the official 2027 IRMAA brackets be released?
A: CMS typically publishes 2027 premiums, deductibles, and income thresholds in late October or November of 2026. Every figure before that release is a projection. If your 2025 income sits close to a threshold, leave yourself a margin rather than planning around an estimate.
Q: Does a Medicare supplement plan reduce my IRMAA surcharge?
A: No. A Medigap plan pays gaps Original Medicare leaves, like coinsurance and deductibles. It does not change your Part B or Part D premium, because your surcharge follows your income. Shopping your Medigap rate is still the fastest way to lower your total monthly outlay.
Q: Can I appeal a 2027 surcharge before the letter arrives?
A: Yes. You can file Form SSA-44 as soon as a qualifying event drops your income, with no need to wait for a determination notice. Filing early shortens the time you spend paying the higher amount. Bring documentation of both the event and your estimated income for the year.
Hi! I’m Mel Fonseca, and I’m one of your Personal Benefits Managers. I like working with MediGap Advisors because we’re creating solutions to healthcare problems. I’ve been in your shoes. As someone who’s had to choose health benefits for both my family and my team, I understand the pressure that comes with it. Read more about me on my Bio page.