IRMAA calculator

Shows how far you are from the next IRMAA cliff, what crossing it costs in a year, and what a Roth conversion or gain would do two years later, using the 2026 CMS tables.

In short

IRMAA is an extra charge added to the Medicare Part B and Part D premiums when your income is above a set level. It uses your modified AGI from two years earlier, so 2024 income sets 2026 premiums. In 2026 a single filer pays no surcharge at $109,000 or less, and $81.20 more for Part B just above it.

  • CMS 2026 tables
  • Part B and Part D
  • Roth what-if
  • Worksheet
  • Runs in your browser

Private by design. Nothing you type is uploaded or saved. Add this tool to your phone or computer for one-tap access.

Your income

Adjusted gross income plus tax-exempt interest, from the tax return Medicare uses (two years before the premium year).

What-if (optional)

For example a Roth conversion or a capital gain. Income in 2026 sets the premiums you pay in 2028.

Enter your modified AGI to see your bracket.

An estimate from the 2026 tables. The Social Security Administration decides your actual premium from its own records. Later years’ tables have not been announced, and the what-if uses the 2026 table. People who filed separately but lived apart all year are treated as single; confirm that with the SSA.

Medicare IRMAA
CMS 2026 premium tables · two-year income lookback
Estimate
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Enter your modified AGI to see your bracket and premium.

An estimate using the CMS 2026 Medicare premium tables and the two-year income lookback. The Social Security Administration decides your actual premium. Not tax or Medicare advice.

How to use it

  1. Enter your modified AGI: adjusted gross income plus tax-exempt interest, from the return Medicare is using.
  2. Choose your filing status and, for a joint return, whether one or both spouses are on Medicare.
  3. Choose whether to include the Part D surcharge.
  4. Optionally add extra income, such as a Roth conversion, to see how many brackets it crosses and what it costs.
  5. Read the bracket, the headroom and the yearly cost on the right, then copy the summary or download an image.

How it calculates

Your modified AGI (adjusted gross income plus tax-exempt interest) from two years earlier is compared with the CMS bracket table for your filing status. The bracket sets a fixed Part B surcharge and Part D surcharge added to the standard premium. Nothing is prorated inside a bracket, so one dollar over a line moves you to the next step. A married couple with both spouses on Medicare pays the amounts twice.

For example, a married couple filing jointly with modified AGI of $270,000 and both spouses on Medicare is in the second bracket and pays $2,297 a year in IRMAA between them. A $10,000 Roth conversion in the same income year raises MAGI to $280,000, past the $274,000 line, so the household pays $5,770: $3,473 more a year in Medicare charges, before any income tax. The couple and the amounts are made up; yours come from what you type.

Who should use it

  • People on Medicare, or close to it, who want to see their bracket and the yearly extra cost
  • Retirees planning a Roth conversion or a large sale who want to see the Medicare effect two years later
  • Anyone checking how close their income is to the next IRMAA line

Who should not use this

  • Anyone who needs the exact amount; the Social Security Administration decides your surcharge from its own records
  • People who filed separately but lived apart all year, whose bracket the SSA page does not spell out; the tool treats them as single, so confirm with the SSA
  • Anyone planning for 2027 premiums, because those tables had not been announced when this page was written

Limitations

  • It uses the 2026 tables. CMS usually announces the next year’s figures in mid-November, and thresholds normally change with inflation.
  • A what-if shows the Medicare charge only. A conversion or gain also creates income tax, which is not calculated here.
  • Medicare Advantage and drug plan premiums are separate and are not part of IRMAA; only the Part D surcharge is.
  • Medicaid, Medicare Savings Program and first-year enrollee situations should be confirmed with the SSA or Medicare.
  • Nothing is uploaded or stored on a server. Clearing your browser data also removes the saved profile.

Sources and review

Reviewed on 18 Oct 2026 against the published sources below. Rules and prices change, so check the current position before you rely on a figure.

Common questions

How do you calculate your IRMAA?
Take your modified AGI from the tax return Medicare is using, which is the return from two years earlier: adjusted gross income plus tax-exempt interest. Find the bracket for your filing status in the CMS table. The bracket sets your Part B surcharge and Part D surcharge, which are added to the standard premium.
What is my IRMAA for 2026?
Based on the 2024 return, a single filer with MAGI of $109,000 or less pays $0. The surcharges rise in five steps to $487.00 for Part B and $91.00 for Part D a month at $500,000 and above. Joint filers use thresholds twice as high, up to $750,000.
What is the maximum income to avoid IRMAA?
For 2026 premiums, $109,000 for a single filer and $218,000 for a married couple filing jointly, measured as modified AGI on the 2024 return. At or below those amounts you pay only the standard Part B premium of $202.90 a month.
How much do you pay for Medicare if you make $200,000 a year?
A single filer with $200,000 of MAGI pays a Part B premium of $527.50 a month plus a $60.40 Part D surcharge in 2026, which is about $4,620 a year in surcharges. A joint-filing couple with $200,000 is under the $218,000 line and pays only the standard premium.
Which year’s income does IRMAA use?
Income from two years earlier. The 2026 premium generally uses your 2024 tax return, and the SSA may use 2023 if that return is not yet available. A Roth conversion in 2026 would affect 2028 premiums.
Can I appeal or reduce my IRMAA?
Yes, if you had a qualifying life-changing event such as marriage, divorce, the death of a spouse, stopping work or a pension loss. Ask the SSA to use a more recent year with Form SSA-44. If you disagree with a decision, use Form SSA-561-U2 to appeal.
When will the 2027 IRMAA brackets be announced?
CMS announced the 2026 figures on 14 November 2025, so the 2027 figures are expected around mid-November 2026. Until then this page uses the 2026 tables.

Guides that explain the rules

Related tools

This tool produces a document from the information you type. It does not give legal, tax or accounting advice, and it does not check that your figures or rates are right. See the disclaimer. Found a mistake? Report an error in a calculation.