Retirement & Investing
IRMAA Appeal Impact Calculator (SSA-44)
See how much your Medicare premiums drop if your SSA-44 appeal is approved — monthly savings, annual savings, and which IRMAA tier you move to.
Medicare charges higher-income beneficiaries an extra monthly surcharge on Part B and Part D premiums — called IRMAA (Income-Related Monthly Adjustment Amount). The problem: it is based on your tax return from two years ago. If you retired, reduced your hours, divorced, or lost a pension since then, you are paying 2026 surcharges based on income you no longer earn. You can appeal using Form SSA-44, and if approved, SSA recalculates your premium using your current income. This calculator shows which tier you are in now, which tier you would drop to after a successful appeal, and exactly how much you would save per month and per year.
How IRMAA and the Appeal Process Works
The Two-Year Lookback Problem
Medicare Part B premiums are not flat. Higher earners pay a surcharge — IRMAA — calculated from their income two years back. For 2026 premiums, SSA uses your 2024 MAGI.
The two-year gap creates a well-known trap: a person who earned $180,000 in 2024 but retired in January 2025 and now earns $40,000 per year will spend all of 2026 paying Tier 3 premiums — roughly $298 per month extra in Part B alone — based on income they no longer have.
2026 IRMAA tiers (estimated):
| Tier | Single MAGI | MFJ MAGI | Part B surcharge | Part D surcharge | |---|---|---|---|---| | 0 (base) | ≤ $109,000 | ≤ $218,000 | $0 | $0 | | 1 | $109,001–$137,000 | $218,001–$274,000 | $74.00 | $12.90 | | 2 | $137,001–$172,000 | $274,001–$344,000 | $185.90 | $33.30 | | 3 | $172,001–$206,000 | $344,001–$412,000 | $297.90 | $53.80 | | 4 | $206,001–$513,999 | $412,001–$747,999 | $374.20 | $74.20 | | 5 | ≥ $514,000 | ≥ $748,000 | $410.30 | $81.00 |
Surcharges are per person. A married couple both on Medicare each pay the surcharge.
How SSA-44 Works
Form SSA-44 allows you to request that SSA use a more recent year's income — one that reflects your life-changing event — instead of the 2-year lookback year.
The process:
- Download Form SSA-44 from ssa.gov
- Complete Section 2 (your current income estimate) and Section 3 (the life-changing event)
- Attach supporting documentation (employer letter, divorce decree, death certificate, etc.)
- Submit to your local Social Security office in person, by mail, or online
- SSA reviews and issues a new Medicare premium determination letter
If approved, your reduced premium takes effect the month after SSA receives your request — not retroactively. Filing sooner saves more.
When to Use This Calculator
Immediately after retirement. The month you stop working is the time to file SSA-44 — every month of delay is a month of overpayment. Your employer's letter confirming your last day of work is all you typically need.
When your income dropped significantly in the prior year. Run this calculator when you are filing your taxes and see that your current income is substantially lower than two years ago. If the calculator shows a tier drop, file SSA-44 now rather than waiting for SSA to catch up on its own.
When you received a Medicare premium notice that seems too high. If you get a letter from SSA saying your Part B premium is increasing and the income figure cited is from a year when you had unusual income (sale of a business, large IRA conversion, one-time bonus), you have the right to appeal.
To compare the impact of income reduction strategies. Roth conversions, capital gains harvesting, and large IRA distributions can push you into a higher IRMAA tier. This calculator shows exactly where each tier boundary sits, so you can model the impact of staying just below a threshold.
Further Reading
For a full explanation of the six life-changing event categories, required documentation for each event type, and how to track the status of your SSA-44 appeal, consult your State Health Insurance Assistance Program (SHIP) counselor — a free Medicare advisory service available in every state.
Related Calculators
- Inherited IRA 10-Year RMD Optimizer (2026) — RMD income from an inherited IRA counts toward MAGI; plan your distribution strategy to minimize the IRMAA impact
- Mandatory Roth Catch-Up Calculator (2026) — if you are still working and subject to catch-up contribution rules, reducing pre-tax retirement income affects your IRMAA trajectory
- Super Catch-Up Window Calculator (2026) — maximizing catch-up contributions in the years before Medicare enrollment can reduce the MAGI that will later determine your IRMAA tier
Understanding the Inputs
- 2024 MAGI (SSA currently uses this)
- Your Modified Adjusted Gross Income from your 2024 federal tax return — the figure SSA used to determine your 2026 IRMAA tier. MAGI for IRMAA purposes is your AGI plus tax-exempt interest income. For most people this equals line 11 of Form 1040 plus any tax-exempt interest on line 2a. If you received a Notice of Medicare Premium Determination letter from SSA, the income figure they reference is your 2024 MAGI.
- Reduced MAGI for Appeal
- Your MAGI for the more recent year you are citing in your appeal. SSA will accept 2025 or 2026 income for an SSA-44 appeal if you have experienced a qualifying life-changing event. Enter your best estimate of this year's MAGI — total income minus above-the-line deductions such as retirement contributions, half of SE tax, and health insurance premiums. The lower this figure, the larger the tier reduction and monthly savings.
- Filing Status
- IRMAA thresholds differ by filing status. Single, Head of Household, Qualifying Widow(er), and Married Filing Separately all use the single- filer thresholds. Married Filing Jointly thresholds are roughly twice the single-filer amounts. Note that Married Filing Separately filers face a unique cliff — the income threshold to avoid IRMAA is only $109,000, the same as single, even though both spouses are on the return.
- Life-Changing Event
- The qualifying event you will cite on Form SSA-44. SSA accepts six categories of life-changing events: retirement or work stoppage, work reduction, divorce, death of spouse, loss of employer pension income, and employer settlement payments. The type of event determines what documentation SSA will request — for example, retirement requires a letter from your former employer or Social Security benefit notice; loss of pension requires pension plan documentation.
- Do You Have Part D?
- IRMAA applies to Part D (prescription drug) premiums separately from Part B. If you are enrolled in a Medicare Part D plan, you pay both a Part B and Part D surcharge based on your income tier. Check your Medicare card or plan documents to confirm enrollment. If you receive Extra Help (low- income subsidy) for Part D, IRMAA does not apply to your Part D premium.
Frequently Asked Questions
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