Medicare Premium Jumped Because of IRMAA (Income Surcharge)
Did Social Security say your Medicare premium is going up because of your income?
"My Part B premium is way more than $202.90 and the letter mentions my income"
"Social Security added an extra amount to my Medicare premium because of my 2024 taxes"
"I retired and my income dropped, but Medicare is still charging me based on my old salary"
"I got an IRMAA determination letter and want to appeal it"
Let's figure out which of the two winnable paths fits your situation — a new determination after a life-changing event, or a correction of the tax data Social Security used.
What This Means
The letter behind your higher premium is an IRMAA determination — an income-related monthly adjustment amount that Social Security adds to your Medicare Part B (and Part D) premium because the modified adjusted gross income on your tax return from 2 years ago was over $109,000 (individual return) or $218,000 (joint return). For 2026 that means your income on your 2024 return moved your Part B premium from the standard $202.90 a month to between $284.10 and $689.90, depending on the bracket (CMS 2026 fact sheet). If your income has dropped since that tax year because of a life-changing event — retirement is the most common — do one thing today: file Form SSA-44 asking Social Security for a new determination based on your current income.
If the tax information is wrong — for example, you filed an amended return or the IRS data contains an error — call Social Security at 1-800-772-1213. There is also a specific newer-return route: if SSA used three-year-old tax data, you can supply your filed two-year-old return. A lower return from a later year alone does not replace the normal two-year lookback without a qualifying basis. If you disagree with the determination, you can request formal reconsideration within 60 days of receiving the letter (SSA appeals).
This is a premium decision made by Social Security, not a claim denial from Medicare or your plan — your coverage itself is not affected, and the dispute runs through SSA rather than the Medicare claims appeal system. Roughly 8% of people with Medicare Part B pay an IRMAA (CMS).
Why This Happens
- Medicare looks two years back. The 2026 surcharge is calculated from your 2024 tax return — the return the IRS supplies to Social Security under the program’s two-year lookback. Nobody asks whether that income still reflects your life. If you retired in 2025 or 2026, Social Security is billing your retirement-era premium off your working-era income until you tell it otherwise.
- The brackets are cliffs, not a slope. Crossing a threshold by a single dollar moves the entire premium to the next tier — the first step alone adds $81.20 a month.
- A one-time income spike counts just like salary. Anything that raised your 2024 modified adjusted gross income — capital gains, large retirement-account withdrawals, a Roth conversion, a final year of full-time earnings — can push you over a bracket for all of 2026.
- The notice arrives on its own schedule. Social Security determines IRMAA from IRS data automatically and notifies you near the end of each year about the upcoming year’s premium (HHS OMHA). If your premium is deducted from a Social Security benefit, the change shows up as a smaller monthly deposit.
How the 2026 IRMAA Brackets Work
Your total 2026 Part B premium by income bracket (CMS 2026 fact sheet):
| Individual tax return (2024 income) | Joint tax return (2024 income) | IRMAA added | Total Part B premium |
|---|---|---|---|
| $109,000 or less | $218,000 or less | $0.00 | $202.90 |
| Over $109,000 up to $137,000 | Over $218,000 up to $274,000 | $81.20 | $284.10 |
| Over $137,000 up to $171,000 | Over $274,000 up to $342,000 | $202.90 | $405.80 |
| Over $171,000 up to $205,000 | Over $342,000 up to $410,000 | $324.60 | $527.50 |
| Over $205,000 under $500,000 | Over $410,000 under $750,000 | $446.30 | $649.20 |
| $500,000 and above | $750,000 and above | $487.00 | $689.90 |
If you are married filing separately and lived with your spouse during the year, different brackets apply — the surcharge jumps straight to the two highest tiers above $109,000; see the CMS fact sheet for those rows.
The same brackets add a Part D surcharge of $14.50 to $91.00 per month in 2026 on top of whatever your drug plan charges. The Part D amount is paid to Medicare — deducted from your Social Security benefit or billed to you directly — not to your plan (CMS).
Should You Appeal?
Whether an IRMAA challenge succeeds depends almost entirely on which situation you are in (HHS OMHA):
- A qualifying life-changing event reduced your income — marriage, divorce or annulment, death of a spouse, stopping or reducing work, qualifying loss of income-producing property or pension income, or an employer settlement payment (SSA). Ask for a new determination and provide evidence of the event and your lower income; SSA decides whether the requirements are met.
- The tax information needs correction — an amended return, an IRS error, or SSA’s use of three-year-old data when your filed two-year-old return is now available. For example, if SSA used 2023 data for 2026, provide the 2024 return. Simply filing a lower-income 2025 return does not replace a correctly used 2024 return without another qualifying basis.
- Neither applies — SSA used the correct tax information and no separate qualifying life-changing event reduced your income. A Roth conversion alone is not an SSA-44 life-changing event, so the surcharge generally stands for the year based on that return. IRMAA is redetermined annually; a one-time spike generally falls away once a later return replaces it.
Events that only raise your expenses, or income losses that don’t change your modified adjusted gross income, do not qualify as life-changing events.
What To Do Next
- Read the determination letter. It is an “initial determination” from Social Security, and it names the tax year and income figure used. Confirm which bracket that figure lands in using the table above — bracket errors are worth catching before anything else.
- Pick your path. A qualifying life-changing event lowered income → SSA-44. An amended return, IRS error, or two-year-old return replacing three-year-old data → ask SSA for a correction. If you disagree with the determination, protect the reconsideration deadline on your notice.
- Life-changing event: file Form SSA-44. Submit it online by signing in at SSA’s IRMAA page, or fax or mail the paper form to your local Social Security office with evidence of the event and your lower income — for example, a letter from your employer about your retirement date, plus your more recent tax return or an estimate of this year’s income.
- Tax-data correction: call 1-800-772-1213. Explain whether you have an amended return, an IRS correction, or a filed two-year-old return to replace three-year-old information SSA used. Ask what evidence SSA needs. Do not assume any newer lower-income return can replace the regular two-year return.
- Disagree entirely: request reconsideration within 60 days of receiving the letter — online, by calling Social Security, or by submitting Form SSA-561-U2 (SSA appeals). If the reconsideration goes against you, the next level is a hearing before an administrative law judge at HHS’s Office of Medicare Hearings and Appeals (OMHA).
- Keep paying the billed premium while you dispute it. A successful SSA-44 or appeal recalculates what you owe. If your income has dropped far enough, also check whether you now qualify for help paying Medicare costs — see our Extra Help guide.
Sources
- CMS: 2026 Medicare Parts A & B Premiums and Deductibles — the $202.90 standard premium, the full 2026 Part B IRMAA bracket tables, the Part D IRMAA amounts ($14.50–$91.00), and the roughly-8% figures.
- Medicare.gov: Medicare costs — the higher premium applies when MAGI on your IRS tax return from 2 years ago exceeds $109,000 (individual) / $218,000 (joint) in 2026.
- SSA: Request to lower an Income-Related Monthly Adjustment Amount (IRMAA) — life-changing events, filing SSA-44 online or by fax/mail with evidence, and the amended-tax-return phone path.
- SSA: Form SSA-44 (PDF) — Medicare Income-Related Monthly Adjustment Amount — Life-Changing Event.
- SSA: Request reconsideration — the 60-day deadline after receiving a decision and Form SSA-561-U2.
- HHS Office of Medicare Hearings and Appeals: Medicare Part B Premium Appeals — the appeal ladder (SSA reconsideration first, then OMHA), the qualifying situations for a new determination, and IRMAA’s one-year-at-a-time application.
- SSA POMS HI 01120.055 — submitting two-year-old tax data when SSA used three-year-old data.
- SSA POMS HI 01120.005 — qualifying and non-qualifying life-changing events.
Not sure if your bill is right? Check it against Medicare's rules →
Frequently Asked Questions
See If Your Bill Is Right
Barley checks your bill or Medicare notice against Medicare's rules — so you know if there's an error and what to do about it.
Check My BillFree to start. No credit card.
Already a member? Open your dashboard →
This information is for educational purposes only and is not legal or medical advice. Always verify with your doctor's office and insurance company.