When Social Security sends an IRMAA determination letter, it uses the MAGI from your tax return two years prior. If that return reflects a year with unusually high income that has since dropped because of a specific qualifying event, you can ask SSA to use a more recent year’s income instead. The mechanism is form SSA-44 (Medicare Income-Related Monthly Adjustment Amount, Life-Changing Event), available at ssa.gov/forms/ssa-44.pdf.
What a successful appeal does
A granted SSA-44 appeal causes SSA to recalculate your IRMAA surcharge using either a more recent tax year or an estimate of your current-year income, if the qualifying event occurred after that return was filed. If the recalculated MAGI falls below a lower tier threshold, your premiums drop retroactively to the month SSA processes the request. The stakes scale with the tier: dropping from tier 3 to the standard premium saves $385.00 per person per month in 2026, $4,620.00 over the year. Step 2 of the form accepts a good-faith estimate of the current year’s income, which SSA verifies against the return once filed, so relief does not wait for the next filing season.
The eight qualifying life-changing events
The SSA-44 form (as published by the Social Security Administration, verified against the form’s Section B event list) recognizes these eight events:
- Marriage. Your MAGI is now calculated jointly with a new spouse. If the combined prior-year income was an outlier, a more recent joint figure may be used.
- Divorce or annulment. The transition from joint to single filing changes your MAGI calculation going forward.
- Death of a spouse. The surviving spouse files as single, which shifts both the MAGI figure and the applicable filing-status thresholds.
- Work stoppage. You or your spouse stopped working (e.g., retirement).
- Work reduction. You or your spouse reduced work hours or changed to a lower-paid position.
- Loss of income-producing property. The property must have been lost due to a disaster or other event beyond your control, not a voluntary sale.
- Loss of pension income. Includes termination of a pension or annuity not caused by the beneficiary’s own action.
- Employer settlement payment. You received a one-time settlement from a current or former employer that inflated the base-year income but will not recur.
These eight events are the complete list. SSA does not extend the appeal to other types of one-time income, regardless of size.
What does NOT qualify: the Roth conversion trap
A Roth conversion is not a qualifying life-changing event. Converting traditional IRA funds to a Roth IRA is a deliberate transaction you choose and control. SSA’s definition of a qualifying event requires an involuntary or status-changing circumstance; a conversion satisfies neither condition.
This matters because the two-year lookback makes a large conversion-year MAGI the basis for Medicare premiums two years later. If a $150,000 conversion pushes a single filer’s MAGI to $180,000 in 2024, the 2026 determination lands at tier 3: Part B rises to $527.50 per month and Part D adds a $60.40 monthly surcharge, a total of $385.00 per month over the standard premium, $4,620.00 across the year. The surcharge applies for all of 2026. Filing an SSA-44 citing the conversion will be denied.
The right response is to plan the conversion size before converting, not to
appeal afterward. The IRMAA brackets page shows the 2026
thresholds for every filing status. The calculator flags rmd-tier-cliff
warnings when a scenario crosses a tier boundary and shows the two-year premium
impact alongside the federal tax on the conversion.
The non-LCE path: correcting wrong data
Separately from life-changing events, SSA may have used incorrect or outdated MAGI. If SSA based your IRMAA determination on a year for which you later filed an amended return, or if SSA pulled from the wrong year entirely, you can request a correction with documentation (the amended return or a transcript showing the correct figure). This is not the same as an LCE appeal and does not require a qualifying event; it is a data correction request.
If SSA denies it
A denied SSA-44 is an initial determination, which carries normal SSA appeal rights: request reconsideration on form SSA-561 within 60 days of the notice (SSA POMS HI 01140.001), and a denied reconsideration can go to an administrative law judge. These stages help when SSA misapplied the rules or missed documentation. They do not change the substantive answer for conversions: no stage of the appeal process treats a voluntary Roth conversion as a life-changing event.
Timing
File form SSA-44 as soon as the IRMAA determination letter arrives. SSA adjusts premiums retroactively to the month the request is processed, not the month of the life-changing event, so filing promptly minimizes the amount of surcharge paid before the recalculation takes effect. Attach documentation of the event (marriage certificate, death certificate, final pay stub, pension termination letter, or equivalent) when you submit.