A comprehensive guide for Medicare beneficiaries and pre-retirees navigating the Income-Related Monthly Adjustment Amount
What Is IRMAA?
If you’re enrolled in Medicare and your income exceeds certain thresholds, you’re paying more for your coverage than most beneficiaries — possibly a lot more. The additional charge is called IRMAA, which stands for Income-Related Monthly Adjustment Amount. It’s a surcharge added on top of the standard premiums for both Medicare Part B (medical insurance) and Part D (prescription drug coverage).
The underlying logic is straightforward: most Medicare beneficiaries pay premiums that cover roughly 25% of the actual cost of Part B services, with the federal government subsidizing the remaining 75%. IRMAA increases that beneficiary share for higher earners, scaling it up to as much as 85% of program costs at the highest income levels.
IRMAA affects all Medicare beneficiaries whose income exceeds the thresholds, including those enrolled in Medicare Advantage plans. If your Medicare Advantage plan includes prescription drug coverage, you’ll owe IRMAA surcharges for both Part B and Part D.
How IRMAA Is Calculated: The Two-Year Lookback
The Social Security Administration (SSA) determines your IRMAA based on the modified adjusted gross income (MAGI) reported on your federal tax return from two years prior. For 2026 premiums, SSA uses your 2024 tax return. If your 2024 return hasn’t been processed, they may fall back to your 2023 return.
Your MAGI for IRMAA purposes is your adjusted gross income (Form 1040, Line 11) plus any tax-exempt interest income (Form 1040, Line 2a). This means that income from wages, pensions, Social Security benefits, IRA and 401(k) distributions, Roth conversions, capital gains, rental income, and municipal bond interest all count toward the IRMAA calculation.
This two-year lookback creates a common frustration for recent retirees. If you earned a full salary in 2024 but retired in 2025, your 2026 Medicare premiums are still based on your high-earning year. The system hasn’t caught up with your actual financial situation — which is exactly the problem Form SSA-44 is designed to solve.
2026 IRMAA Brackets
The following table shows the 2026 IRMAA brackets for Medicare Part B and Part D. The “Annual Cost” column reflects the combined Part B and Part D surcharge above the standard premium, per person, per year.
| Tier | Single Filer MAGI | Joint Filer MAGI | Part B Monthly | Part D Surcharge | Annual Cost* |
|---|---|---|---|---|---|
| Standard | $109,000 or less | $218,000 or less | $202.90 | $0.00 | $0 |
| Tier 1 | $109,001 – $137,000 | $218,001 – $274,000 | $284.10 | +$14.50 | $1,148 |
| Tier 2 | $137,001 – $171,000 | $274,001 – $342,000 | $406.40 | +$37.40 | $2,802 |
| Tier 3 | $171,001 – $205,000 | $342,001 – $410,000 | $528.80 | +$60.30 | $4,459 |
| Tier 4 | $205,001 – $500,000 | $410,001 – $750,000 | $649.20 | +$83.30 | $6,114 |
| Tier 5 | Above $500,000 | Above $750,000 | $689.90 | +$91.00 | $6,936 |
*Annual cost represents the combined Part B surcharge plus Part D surcharge above the standard premium, per person. Part D surcharge is added on top of your plan’s premium.
A few important details about these brackets. First, IRMAA operates as a cliff, not a graduated scale. Exceeding a threshold by even one dollar triggers the full surcharge for that entire tier. For a married couple filing jointly, crossing the $218,000 threshold by a single dollar results in an additional $2,297 per year in Medicare premiums for the couple. Second, the first four bracket thresholds are indexed for inflation annually, but the top bracket ($500,000 single / $750,000 joint) is frozen and will not be indexed until 2028. Third, married couples filing separately face significantly compressed brackets, with surcharges kicking in at $109,000 and jumping sharply.
What Is Form SSA-44?
Form SSA-44, officially titled “Medicare Income-Related Monthly Adjustment Amount – Life-Changing Event,” is a form you file with the Social Security Administration to request a new IRMAA determination based on a more recent, lower income figure. It is important to understand that filing SSA-44 is not technically an “appeal” in the formal sense — it’s a request for a reconsidered initial determination based on new facts that SSA would not have had at the time of the original calculation.
The form asks you to identify a qualifying life-changing event, provide the date it occurred, and supply your actual or estimated MAGI for the more recent year you want SSA to use. If approved, SSA recalculates your premiums retroactively. Any excess premiums already paid are refunded, typically via your Social Security direct deposit or by check. Future premiums are adjusted automatically going forward.
Qualifying Life-Changing Events
Not every income reduction qualifies for an SSA-44 request. The Social Security Administration recognizes a specific and limited set of life-changing events. The event must have directly caused a significant reduction in your income compared to the year SSA used to calculate your IRMAA. The following table lists each qualifying event, the documentation typically required, and a common scenario in which it applies.
| Life-Changing Event | Documentation Needed | Common Scenario |
|---|---|---|
| Retirement / Work Stoppage | Employer letter, final pay stub, or severance agreement | You retired in 2025 after a full salary year in 2024 |
| Reduction in Work Hours | Letter from employer confirming reduced schedule and pay | You moved from full-time to part-time |
| Marriage | Marriage certificate | Your combined household income is now lower on a per-filer basis |
| Divorce or Annulment | Divorce decree or annulment order | Your filing status and income changed post-divorce |
| Death of a Spouse | Death certificate | Surviving spouse’s income is significantly lower |
| Loss of Income-Producing Property | Documentation of the involuntary loss | A rental property was condemned or destroyed |
| Loss or Reduction of Pension | Pension change notice from plan administrator | Your employer pension was reduced or eliminated |
| Employer Settlement Payment | Settlement agreement and payment documentation | You received a one-time settlement that inflated a prior year’s income |
There are notable situations that do not qualify. A one-time capital gain from selling an investment or property generally does not meet the SSA’s criteria, even if it was a non-recurring event that inflated your income for a single year. Similarly, large Roth IRA conversions that temporarily spike your MAGI are not considered life-changing events under the SSA’s definition. If your income was temporarily high in the lookback year for a reason that doesn’t fit one of the categories above, you’ll typically need to wait for the two-year lookback to catch up with your actual income.
How to File Form SSA-44: Step by Step
Step 1: Confirm you’re being charged IRMAA. Wait until you receive the Initial IRMAA Determination notice from SSA before filing. This letter confirms your surcharge amount and the income data SSA used. Filing before you receive this notice is premature and may cause processing issues.
Step 2: Identify your qualifying event. On the form, check the box for the applicable life-changing event and enter the date it occurred. The event date must fall in the same year or earlier than the tax year you’re asking SSA to use.
Step 3: Report your reduced income. Provide your MAGI for the more recent tax year that reflects your lower income. If you’re asking SSA to use your 2025 income instead of 2024, enter your 2025 MAGI. If you haven’t filed your 2025 return yet, you can provide a reasonable estimate.
Step 4: Estimate next year if applicable. If your income is expected to drop further in the coming year, you can note that on the form as well, and SSA will record it for future determination.
Step 5: Gather documentation. Attach evidence of both the life-changing event and your reduced income. This should include original documents or certified copies — for example, an employer separation letter plus a copy of your most recent tax return or a signed estimate of your MAGI.
Step 6: Submit. You can submit your completed SSA-44 and documentation by visiting your local Social Security office in person, faxing it to your local office, mailing it, or through your my Social Security account online. Keep copies of everything you submit.
What Happens After You File
Social Security typically processes SSA-44 requests within 30 to 60 days, though processing times can vary. You’ll receive a written decision. If approved, your reduced IRMAA amount applies for the current year, and any excess premiums already paid are refunded. Future premiums are adjusted automatically as long as your income remains at the lower level.
If your request is denied, you retain the right to pursue a formal appeal through the SSA’s multi-level process, starting with a request for reconsideration and potentially escalating to a hearing before an Administrative Law Judge. The denial letter will include specific instructions for next steps.
A Practical Example
Consider a married couple, both age 67 and on Medicare, who earned combined income of $260,000 in 2024, placing them in IRMAA Tier 1 for 2026. Their combined annual IRMAA surcharge is approximately $2,297. One spouse retired in January 2025, and their 2025 household income has dropped to $140,000 — well below the $218,000 joint filing threshold.
Without filing SSA-44, they’ll continue paying the Tier 1 surcharge throughout all of 2026, because SSA is still looking at 2024 income. By filing SSA-44 with documentation of the retirement and their 2025 income, they can request that SSA recalculate using the lower figure. If approved, they eliminate the surcharge entirely and receive a refund for any months they’ve already overpaid.
Proactive IRMAA Planning
While Form SSA-44 is a powerful tool for reacting to an IRMAA surcharge after a life-changing event, the best approach is to plan proactively so that IRMAA doesn’t catch you off guard. Because IRMAA operates on a cliff structure and uses a two-year lookback, income decisions you make today directly affect your Medicare premiums two years from now.
Strategies we regularly help clients evaluate include timing Roth IRA conversions to the years before Medicare eligibility (ideally ages 60–64) when they won’t trigger IRMAA, using qualified charitable distributions (QCDs) from your IRA after age 70½ to satisfy required minimum distributions without increasing your MAGI, blending withdrawals from traditional, Roth, and taxable accounts to keep total MAGI below bracket thresholds, and being mindful of one-time income events like property sales or large capital gains in years that will affect your Medicare premiums.
The goal is not to avoid income at all costs — it’s to make informed decisions that account for the full picture, including the Medicare cost that most people overlook.
Key Takeaways
- IRMAA is a Medicare surcharge on Part B and Part D premiums for higher-income beneficiaries, based on income from two years prior.
- For 2026, surcharges begin at $109,000 (single) or $218,000 (joint) and can add up to nearly $6,940 per person per year in additional premiums.
- IRMAA uses cliff-based brackets — exceeding a threshold by even $1 triggers the full surcharge for that tier.
- Form SSA-44 allows you to request a recalculated determination if a qualifying life-changing event has reduced your income.
- Qualifying events include retirement, work reduction, marriage, divorce, death of a spouse, and loss of pension or income-producing property.
- If approved, the adjustment is retroactive, with excess premiums refunded.
- Proactive income planning — particularly around Roth conversions, QCDs, and withdrawal sequencing — is the best way to manage IRMAA exposure over time.
