RMAA brackets 2026 and the clear yearly cost of each tier
IRMAA brackets 2026 add $81.20 to $487 monthly to Part B, plus a Part D surcharge most tables leave out. Your 2024 return already picked your row.
In This Article
The letter comes from Social Security, not Medicare, and says your premium is higher than the figure everyone quotes. That charge is the income-related monthly adjustment amount, and it attaches to two bills you already have.
Where to start:
- Holding a determination letter? Your row is below.
- Want the yearly cost? Section three has it.
- Filed separately from your spouse? A different schedule applies.
- Income dropped since 2024? There is a form, not an appeal.
- Planning ahead? One tax year is still open.
It reaches roughly 8% of people with Part B, landing on two of Medicare’s five separate bills.
ℹ️ Financial Disclaimer: This article covers income-related Medicare premium adjustments, federal tax reporting, Social Security benefit interactions, and prescription drug coverage costs. It is educational only and is not personalized tax, investment, insurance, or legal advice. Your surcharge depends on your reported income, filing status, and coverage, and only your Social Security determination letter is authoritative for your account. Consult a CPA, a fiduciary advisor, or a State Health Insurance Assistance Program counselor before acting on anything here.
2026 IRMAA brackets by income and filing status
Your 2026 surcharge is set by the modified adjusted gross income on your 2024 tax return. It starts above $109,000 single and $218,000 for couples filing jointly.
| 2024 MAGI (single) | 2024 MAGI (joint) | Part B surcharge | Total Part B premium | Part D surcharge |
|---|---|---|---|---|
| $109,000 or less | $218,000 or less | $0.00 | $202.90 | $0.00 |
| Over $109,000 to $137,000 | Over $218,000 to $274,000 | $81.20 | $284.10 | $14.50 |
| Over $137,000 to $171,000 | Over $274,000 to $342,000 | $202.90 | $405.80 | $37.50 |
| Over $171,000 to $205,000 | Over $342,000 to $410,000 | $324.60 | $527.50 | $60.40 |
| Over $205,000, under $500,000 | Over $410,000, under $750,000 | $446.30 | $649.20 | $83.30 |
| $500,000 or more | $750,000 or more | $487.00 | $689.90 | $91.00 |
Source: CMS 2026 Medicare Parts A & B Premiums and Deductibles fact sheet, published November 14, 2025. Verified September 2, 2026.
What income triggers IRMAA in 2026
Joint thresholds are double the single ones at every tier but the top. Six rows appear because the first is the standard premium; the five beneath are the surcharge tiers themselves.
The standard monthly premium is $202.90, up $17.90 from $185.00, and it is the base this surcharge is added to.
The Part D surcharge most tables leave out
The adjustment lands on drug coverage too, from $14.50 to $91.00 monthly. It goes to Medicare rather than your insurer, so you pay two parties for one drug plan on top of whatever your Part D plan itself costs.
What each IRMAA tier costs across a full year
Monthly figures understate this. Add the Part B surcharge to the Part D surcharge, multiply by twelve, and the annual cost becomes the number worth reacting to.
| Tier | Monthly (Part B + Part D) | One person, per year | Couple, both enrolled | Key detail |
|---|---|---|---|---|
| 1 | $95.70 | $1,148.40 | $2,296.80 | The first cliff, and the most common |
| 2 | $240.40 | $2,884.80 | $5,769.60 | More than double tier one |
| 3 | $385.00 | $4,620.00 | $9,240.00 | Surcharge now exceeds the standard premium |
| 4 | $529.60 | $6,355.20 | $12,710.40 | Also the rate for most separate filers |
| 5 | $578.00 | $6,936.00 | $13,872.00 | The ladder stops climbing here |
Figures computed from the CMS surcharge amounts above: monthly total × 12 for one person, × 24 for a couple where both are enrolled. Verified September 2, 2026.
Why couples pay it twice
Both spouses are assessed individually on the same joint income, so one household figure produces two surcharges. That is why a married couple’s Medicare cost rarely matches the per-person tables published elsewhere.
At the top tier that is $13,872.00 in surcharges alone. Fold it into what a full year of Medicare adds up to.
Which tax year sets your 2026 IRMAA
Your 2026 premium rests on the 2024 federal tax return you filed last year. Social Security occasionally uses 2023 data instead but will update its records on request.
The two lines on your return that decide it
🔍 How It Works: This figure is not printed on your return. Form SSA-44 defines it as line 11 of Form 1040, your adjusted gross income, plus line 2a, your tax-exempt interest. Municipal bond interest counts even though it is untaxed.
Line 11 does the heavy lifting, so it is worth knowing what lands in adjusted gross income.
Which year is still open
| Premium year | Set by income from | Status today |
|---|---|---|
| 2026 | tax year 2024 | Closed — return filed |
| 2027 | tax year 2025 | Closed — return filed |
| 2028 | tax year 2026 | Open until December 31 |
Two are already decided. Income recognised this year lands on a 2028 premium, so estimate what you are on track to report.
✅ Action Step: Ask a CPA: “Based on what I report for 2026, will I cross an IRMAA threshold in 2028?” Acting on the answer is a tax decision for your whole return.
Why one dollar over a threshold costs so much
The cliff threshold has no phase-in. One dollar above a limit moves you fully into the next tier for the whole year.
⚠️ Costly Mistake: A single filer whose 2024 MAGI came in at $109,001 pays $1,148.40 more across 2026 than one at $109,000. A late required distribution or a property sale is usually the cause.
| Threshold crossed (single / joint) | Monthly increase | One person, per year | Couple, per year |
|---|---|---|---|
| $109,000 / $218,000 | $95.70 | $1,148.40 | $2,296.80 |
| $137,000 / $274,000 | $144.70 | $1,736.40 | $3,472.80 |
| $171,000 / $342,000 | $144.60 | $1,735.20 | $3,470.40 |
| $205,000 / $410,000 | $144.60 | $1,735.20 | $3,470.40 |
| $500,000 / $750,000 | $48.40 | $580.80 | $1,161.60 |
Computed from CMS surcharge amounts, fact sheet of November 14, 2025. Verified September 2, 2026.
Timing moves people across these lines, which is why required distribution rules and the tax on a large sale matter two years early.
💡 Expert Note: Social Security explains that most beneficiaries pay about 25% of the total cost of Part B, while higher earners pay 35%, 50%, 65%, 80% or 85%. The surcharge withdraws a subsidy rather than taxing income, which is why it is a fixed amount.
The filing status that skips three tiers
A different schedule applies to people who are married filing separately and lived with their spouse at any point during the tax year. Both conditions must be true.
| 2024 MAGI | Part B surcharge | Total Part B | Part D surcharge | Key detail |
|---|---|---|---|---|
| $109,000 or less | $0.00 | $202.90 | $0.00 | Same as everyone else |
| Over $109,000, under $391,000 | $446.30 | $649.20 | $83.30 | Jumps straight to tier four |
| $391,000 or more | $487.00 | $689.90 | $91.00 | Top tier |
Source: CMS fact sheet of November 14, 2025, married-filing-separately schedule. Verified September 2, 2026.
Three rows exist instead of six; the first three tiers do not apply here.
📊 Data Point: At $110,000 of MAGI a separate filer pays $6,355.20 across 2026, against $1,148.40 for a single filer at identical income, a gap of $5,206.80 a year. Source: computed from CMS amounts.
One sourcing note. At this review date the CMS fact sheet lists $487.00 for the top row, while Social Security’s chart lists $487.90 there and $487.00 for the equivalent tier above. We publish the CMS figure, since CMS sets these amounts.
How to get an IRMAA decision changed
Two routes exist, and the wrong one costs months. A life-changing event calls for a new decision, not an appeal.
Social Security may reconsider where income fell because of marriage, divorce or a spouse’s death; work stopping or hours being cut; loss of income-producing property beyond your control; termination or reorganisation of an employer pension plan; or a settlement after an employer’s closure or bankruptcy.
You can request a lower adjustment online, or mail Form SSA-44 with evidence of the event and the income drop. Amended returns go by phone; a Request for Reconsideration disputes the decision itself.
✅ Action Step: Before filing, ask a State Health Insurance Assistance Program counselor, free and paid no commission: “Does my situation meet Social Security’s definition of a life-changing event, and what documentation do you need?”
Common questions about the 2026 IRMAA brackets
1. What are the IRMAA brackets for 2026?
Five surcharge tiers above $109,000 single or $218,000 joint, adding $81.20 to $487.00 monthly to Part B.
2. What income triggers IRMAA in 2026?
Modified adjusted gross income above $109,000 single or $218,000 joint, from the 2024 return you filed. Confirm your figure with a CPA.
3. How much is the 2026 Part B IRMAA surcharge?
Between $81.20 and $487.00 monthly, added to the $202.90 standard premium, giving totals of $284.10 to $689.90.
4. What tax year determines my 2026 IRMAA?
Tax year 2024. Social Security sometimes uses 2023 data instead but will update its records on request.
5. Does IRMAA apply to Part D as well?
Yes. The Part D surcharge runs $14.50 to $91.00 monthly, paid to Medicare rather than your plan.
6. Is IRMAA phased in?
No, it is a cliff. One dollar above the first threshold costs $1,148.40 across the year.
7. How much does IRMAA cost a married couple?
From $2,296.80 at the first tier to $13,872.00 at the top, when both spouses are enrolled in Medicare.
8. Why is IRMAA higher when married filing separately?
A separate three-row schedule applies. At $110,000 of MAGI you pay $6,355.20 yearly rather than $1,148.40. Ask a CPA before choosing a filing status.
9. Can I appeal my 2026 IRMAA?
Yes, by Request for Reconsideration. A life-changing event uses a different route and is not an appeal. A SHIP counselor can confirm which applies.
10. What is Form SSA-44 for?
Reporting a major life-changing event and requesting a reduced adjustment, with evidence of the event and income drop.
11. When are the 2027 IRMAA brackets announced?
CMS published the 2026 amounts on November 14, 2025. The 2027 amounts were unpublished at this review date.
What to do before the next determination letter
Two of your next three premium years are already decided. The only one you can still influence is this year, and it sets 2028 rather than 2026.
CMS publishes each year’s amounts in the autumn, and this page is rechecked when they land. Until then, treat the surcharge as a fixed cost inside your retirement plan and put the CPA question above on your December list.
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Informational disclaimer
The content on Finance Authority Hub is provided for general informational and educational purposes only and should not be considered personalized financial, investment, tax, legal, or professional advice. Financial decisions depend on your individual goals, income, risk tolerance, location, and regulatory situation. Before acting on any information, strategy, estimate, or calculator result, consult a qualified licensed professional who can evaluate your specific circumstances.