If you're a Medicare beneficiary with moderate to high income, 2026 may bring a bigger bill — even if your coverage stays the same. The reason? The *Income-Related Monthly Adjustment Amount*, better known as IRMAA, which adds a surcharge to your standard Medicare Part B and Part D premiums if your income exceeds certain thresholds.
In this guide, we'll explain what's changing for 2026, how your 2024 income determines future costs, and how to lower or appeal your IRMAA surcharge before it hits your wallet.
Watch: Understanding IRMAA Explained
A visual guide to Medicare's income-related surcharges
What Is IRMAA and Who Pays It?
IRMAA is an income-based surcharge applied to Medicare Part B (medical insurance) and Part D (prescription drug coverage) premiums. It's assessed by the Social Security Administration (SSA) on behalf of Medicare.
Think of it as a sliding scale: the higher your modified adjusted gross income (MAGI), the higher your monthly premium.
For most people, IRMAA isn't a factor — roughly 7% of Medicare enrollees pay it each year. But if your income crosses a certain line, your premium can rise by hundreds of dollars per month.
For 2026, IRMAA will be based on your 2024 tax return. That means the financial decisions you make *this year* can determine what you'll owe *two years from now*.
How IRMAA Is Calculated
Medicare uses your modified adjusted gross income (MAGI), which includes:
- Adjusted gross income (AGI)
- Plus tax-exempt interest (like municipal bond income)
- Plus certain excluded foreign income
Here's how it works in practice:
- You file your 2024 taxes next spring.
- The IRS sends your income data to SSA.
- SSA checks whether your income exceeds IRMAA thresholds.
- If it does, SSA adds an IRMAA surcharge to your Part B and Part D premiums for all of 2026.
For example, if your 2024 MAGI was $200,000 and you're filing single, you'll land in the fourth IRMAA bracket — meaning your 2026 Part B premium rises by $324.60 per month above the standard $202.90.
What's Changing for 2026 IRMAA Surcharges
CMS has confirmed the 2026 IRMAA brackets. Thresholds rose modestly and surcharges increased, in line with earlier projections from Kiplinger and Investopedia.
- The standard Part B premium is $202.90/month for 2026 — up from $185.00 in 2025.
- Each IRMAA tier adds $81.20–$487.00 per month in Part B surcharge depending on income.
- Part D surcharges also rise, with the lowest tier adding $14.50/month and the highest tier $91.00/month.
2026 IRMAA Brackets (Confirmed by CMS)
Based on your 2024 tax return, as published by CMS:
Single Filers:
- Income ≤ $109,000: Standard premium ($202.90/month Part B)
- $109,001–$137,000: +$81.20 Part B, +$14.50 Part D
- $137,001–$171,000: +$202.90 Part B, +$37.50 Part D
- $171,001–$205,000: +$324.60 Part B, +$60.40 Part D
- $205,001–$500,000: +$446.30 Part B, +$83.30 Part D
- Over $500,000: +$487.00 Part B, +$91.00 Part D
Joint Filers:
- Income ≤ $218,000: Standard premium
- Higher brackets scale proportionally with income, up to $750,000
Why Your 2024 Income Matters Now
Because Medicare uses a two-year look-back, your 2024 tax return will determine whether you owe IRMAA in 2026.
Even small income spikes this year — a Roth conversion, property sale, or pension payout — could push you into a higher tier. One dollar over the line triggers the full surcharge.
Estimate Your 2026 Medicare Premiums based on your projected 2024 income and see exactly how much you could owe.
Who Is Most at Risk?
Even middle-income individuals can cross into surcharge territory due to temporary spikes in MAGI. Common triggers include:
- Roth IRA conversions (converting $50,000 could add $81.20–$202.90/month to your Part B premium)
- Capital gains from property sales
- Large IRA or 401(k) withdrawals
- Stock liquidations or bonus income
- Pension lump-sum payments
How to Reduce or Avoid an IRMAA Surcharge
You have two main opportunities: proactive tax planning before year-end and appealing if your income dropped significantly since then.
1. Plan Ahead Before Year-End 2024
- Defer income to 2025 if possible
- Spread Roth conversions over multiple years to avoid bracket jumps
- Harvest capital losses to offset gains
- Donate appreciated stock instead of cash for charitable deductions
- Use Qualified Charitable Distributions (QCDs) from IRAs (age 70½+)
- Max out deductions like traditional IRA contributions, HSA contributions
2. File an IRMAA Appeal (Form SSA-44)
If your 2024 income was unusually high due to a one-time event, or if your income has dropped significantly since then, you may qualify for an adjustment.
Life-changing events that qualify for IRMAA appeals include:
- Marriage, divorce, or death of spouse
- Work stoppage or reduction
- Loss of income-producing property
- Loss of pension
- Employer settlement payment
Download Form SSA-44 from Social Security to request reevaluation.
Need help with your appeal? Visit our IRMAA Appeal Guide for step-by-step instructions and downloadable templates.
When Will the Official 2026 IRMAA Brackets Be Released?
CMS typically announces the following year's premiums and surcharges in late October or early November. Expect 2026 data by November 2025.
Once published, you'll receive an SSA letter confirming:
- Your income level (based on IRS data)
- Your applicable IRMAA tier
- Your monthly surcharge amount
If there's an error or your situation changed, file an appeal right away using the process outlined on Social Security's IRMAA page.
Practical Takeaways
- Check your 2024 income projections now — Even $1 over a threshold triggers the full surcharge
- Coordinate with your tax advisor — Year-end planning can save hundreds monthly
- Appeal quickly if needed — Don't wait for the first surcharge bill
- Use available tools — Visit our Medicare Tools Hub for calculators and planners
- Stay informed — Check our IRMAA Planning Guide for advanced strategies
Final Thoughts
IRMAA can feel frustrating — especially when it penalizes retirees who saved diligently. But knowing how it works lets you minimize its impact.
With Medicare costs set to rise in 2026, now is the time to act. Smart tax moves before year-end could save you hundreds or even thousands next year.