If your 2024 tax return showed a modified adjusted gross income above the base threshold, you will pay more than the standard Part B premium of $202.90 a month in 2026. That extra amount, called IRMAA, gets added automatically based on income from two years earlier, so the first step is checking your Social Security notice and comparing your 2024 MAGI against the 2026 brackets below.
TL;DR:
- IRMAA uses 2024 MAGI, including tax exempt interest, capital gains, and required distributions; a single dollar above a threshold moves the full premium tier.
- Retirement, reduced hours, divorce, or a spouse’s death may qualify for Form SSA-44; submit evidence and estimate next year’s income if annual figures are unavailable.
- If you dispute the determination, request reconsideration within 60 days and usually keep paying assessed IRMAA while it is pending; successful appeals can bring refunds.
Table of Contents
- 2026 IRMAA income brackets and surcharge amounts
- How IRMAA is calculated: MAGI, the two-year lag, and what counts as income
- How you’ll be notified and how IRMAA is collected
- If your income changed: how to request SSA use a more recent MAGI
- Appeals and reconsideration: SSA POMS overview and practical next steps
- Simple examples: calculate your 2026 monthly cost in common scenarios
- Publisher perspective: how XactInsure helps beneficiaries with IRMAA and Medicare premiums
- How XactInsure can help: schedule a free Medicare review
- FAQ
- Sources
2026 IRMAA income brackets and surcharge amounts
Medicare sets IRMAA using a tiered system tied to your 2024 MAGI. Each tier adds a set surcharge to both Part B and Part D, and the amount jumps at each threshold rather than phasing in gradually.
| 2024 MAGI (individual) | 2024 MAGI (married filing jointly) | 2026 Part B total monthly premium | 2026 Part D monthly surcharge |
|---|---|---|---|
| $106,000 or less | $212,000 or less | $202.90 | 0 |
| above $106,000 up to $137,000 | above $212,000 up to $274,000 | $284.00 | $14.50 |
| above $137,000 up to $171,000 | above $274,000 up to $342,000 | $405.90 | $37.50 |
| above $171,000 up to $205,000 | above $342,000 up to $410,000 | $527.50 | $60.40 |
| above $205,000 and less than $500,000 | above $410,000 and less than $750,000 | $649.20 | $83.30 |
| $500,000 or above | $750,000 or above | $689.90 | $91.00 |
These figures come from Medicare, which also sets a separate, narrower scale for married couples who filed separately and lived together at any point during the year. Those filers hit the top surcharge tier at a much lower income, often starting around $106,001.
Not every bracket moves the same way each year. The lower thresholds typically adjust for inflation, while the top bracket has historically stayed fixed by statute, which means more people drift into the highest surcharge tier over time even without a real increase in purchasing power.
How IRMAA is calculated: MAGI, the two-year lag, and what counts as income
Social Security does not use your current income to set IRMAA. Instead, it pulls your adjusted gross income from the IRS, adds back tax-exempt interest, and arrives at MAGI, a figure that can include sources many retirees do not expect.
- Wages, pensions, and Social Security benefits that are part of your taxable income.
- Tax-exempt municipal bond interest, added back even though it is not federally taxed.
- Capital gains from selling investments, a home, or other property.
- Required minimum distributions from traditional IRAs and 401(k)s.
Because 2026 premiums rely on 2024 tax returns, a one-time event from two years ago, like a Roth conversion or a large property sale, can still be affecting your premium today even if your income has since dropped.
The brackets work as a cliff, not a slope: earning even $1 over a threshold moves your entire premium to the next tier, not just the income above the line.
How you’ll be notified and how IRMAA is collected
Social Security mails IRMAA determination notices in the fall, generally before the new premium year begins, so you can plan for the change before it hits your bank account or benefit statement.
- Automatic deduction: Most beneficiaries have IRMAA withheld directly from their monthly Social Security payment, alongside the standard Part B premium.
- Direct billing: If you are not yet collecting Social Security, Medicare sends a separate quarterly bill, known as a Medicare Premium Bill.
- Retroactive adjustments: When a determination arrives late or changes after an appeal, Social Security or Medicare may collect or refund several months at once rather than spreading it evenly.
If your income changed: how to request SSA use a more recent MAGI
A life-changing event can qualify you for a new IRMAA determination based on more current income instead of the two-year-old tax return Social Security would otherwise use. The SSA-44 form is the tool for this request, and it covers several specific situations.
- Marriage, divorce, or the death of a spouse, which changes your filing status and household income.
- Work stoppage or reduction, including retirement or a cut in hours.
- Loss of income-producing property due to a disaster, sale, or similar event.
- Employer settlement payment that ended, such as severance.
- Pension or annuity income that stopped or decreased.
On the form itself, Step 2 asks for your actual MAGI for the year the event occurred, while Step 3 lets you estimate next year’s income if you cannot yet document a full year of lower earnings. Supporting evidence varies by event: a signed copy of an amended tax return, an employer separation letter, a death certificate, or a divorce decree are all common attachments.
Effective dates generally follow the month of the life-changing event, though requests tied to the new year carry a March 31 deadline for using an estimate tied to the prior year’s determination.
Pro Tip: File SSA-44 as soon as you have documentation, since a completed form with clear evidence moves faster than one requiring follow-up calls.
Appeals and reconsideration: SSA POMS overview and practical next steps
When you disagree with an IRMAA determination rather than report a life-changing event, formal reconsideration is the correct path. SSA’s POMS guidance on IRMAA appeals lays out four levels of review, starting with reconsideration and proceeding through an Administrative Law Judge hearing, the Appeals Council, and finally federal court if needed.
- Reconsideration deadline: You generally have 60 days from the date on your notice to request this first-level review.
- New initial determination vs. appeal: If a life-changing event applies to your case, filing SSA-44 for a new initial determination usually resolves things faster than a formal appeal.
- Payment during the process: You are typically required to keep paying the assessed IRMAA while a reconsideration or appeal is pending, with any overpayment refunded later if you win.
- Evidence: Amended tax returns, IRS transcripts, and documentation of the disputed life event carry the most weight in these reviews.
Simple examples: calculate your 2026 monthly cost in common scenarios
Seeing the math helps make the cliff effect concrete.
- Example A, single filer near a boundary: A retiree with 2024 MAGI of $105,999 pays the standard $202.90 Part B premium with no Part D surcharge. A retiree who reported $106,001, just $2 more, jumps to a $284.00 Part B premium and a $14.50 Part D surcharge, an increase of more than $95 a month from a tiny income difference.
- Example B, married couple in a middle bracket: A couple with joint 2024 MAGI of $300,000 falls into the third tier, paying $405.90 each for Part B and $37.50 each in Part D surcharges. If their Part D plan premium is $45 a month, their combined monthly drug coverage cost becomes $82.50 per person, on top of their Part B premiums.
Both totals typically show up as a single combined deduction from Social Security benefits or as one line item on a quarterly Medicare bill, so reviewing your statement line by line helps confirm the numbers match what you expect.
Publisher perspective: how XactInsure helps beneficiaries with IRMAA and Medicare premiums
We often assist retirees in understanding their notices and provide consultations that help with reading SSA letters, checking for applicable life-changing events, and gathering documentation for SSA-44 before deadlines. We also offer educational seminars explaining these processes step by step to help you better understand what drives your premium.
— Alston
How XactInsure can help: schedule a free Medicare review
We offer free, no-obligation consultations that walk you through your IRMAA notice, help you determine whether SSA-44 applies to your situation, and compare Medicare Supplement and Part D options against what you are currently paying. For a deeper look at how income thresholds interact with your premium, our Part B income guide covers the mechanics in more detail, and readers comparing plan types often also read our Medicare Advantage versus Original Medicare breakdown.
Bring your most recent Social Security notice and your 2024 tax return summary to the appointment, and we’ll help you map out next steps. Schedule your free Medicare review with one of our local advisors today.
This article is general information, not a substitute for advice from a qualified financial advisor. Consult a qualified financial professional about your own circumstances before acting on anything here.
FAQ
Is Medicare going up this year?
The standard Part B premium for 2026 is $202.90 a month, an increase from the prior year’s standard rate. Beneficiaries subject to IRMAA pay additional amounts on top of that base premium depending on their 2024 income.
Am I going to lose my Medicare?
No, IRMAA surcharges do not affect your eligibility or enrollment in Medicare. They only change the monthly amount you pay for Part B and Part D coverage based on your reported income.
Why did my Medicare tax just increase?
A premium increase is usually IRMAA kicking in because your 2024 MAGI crossed into a higher bracket, not a tax change. Reviewing your Social Security notice against the current brackets will show exactly which tier applies to you.
What will the IRMAA brackets be in 2026?
The 2026 brackets start at $106,000 MAGI for individuals and $212,000 for joint filers before any surcharge applies, rising through five tiers to a top bracket at $500,000 and $750,000 respectively. Full dollar amounts for each tier appear in the Medicare.gov bracket tables.
How do I appeal an IRMAA determination?
You can request reconsideration within 60 days of your notice, following the appeals process SSA outlines in its POMS guidance. If a life-changing event caused your income drop, filing Form SSA-44 for a new initial determination is often faster than a formal appeal.
Sources
For further reading, we recommend these official resources alongside two independent guides worth comparing: a plain-language comparison of Medicare Advantage and Medigap for 2026 and a third-party breakdown of IRMAA brackets and next steps.
- 2026 Medicare Parts B premiums and deductibles (CMS fact sheet)
- Medicare Income-Related Monthly Adjustment Amount—Life-Changing Event (SSA-44)
- SSA — POMS: HI 01140.001 Overview of the Appeals Process for the IRMAA
Recommended
- Medicare Part B Premiums and IRMAA: How Income Affects What You Pay in 2026
- Medicare Part B Deductible 2026 — A SWFL Senior’s Guide
- $283 Medicare Part B Deductible 2026 for Seniors: What to Check
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