Before you rely on this

The rules below come from the federal regulation (20 CFR 418, subpart B) and Social Security's operations manual (POMS); the 2026premiums come from CMS. Social Security's own web pages and the current Form SSA-44 could not be checked directly for this guide, so confirm submission options on the form you download. The households in the examples are hypothetical.

Form SSA-44 asks Social Security to recalculate your Medicare income surcharge, IRMAA, using a more recent year's income because a qualifying life-changing event has lowered it. If you retired, cut back your hours, lost a spouse, married or divorced, or lost a pension, you can usually replace the two-year-old tax return with an estimate of this year's income, and the surcharge drops from January. If your income was high because of a one-time sale, a Roth conversion or a large IRA withdrawal, the form does not apply.

At a glance

2026 premiums use

2024 MAGI

AGI plus tax-exempt interest

Qualifying events

8

The list is exclusive

Surcharge starts above

$218,000

Joint; $109,000 single

Top tier, per person

$6,936.00

A year, above the standard premium

Filing deadline

None

But it takes effect from January of the year you ask

Reconsideration

60 days

From receiving the notice

Check your tier first

Before you file, see what the lower income would do. Our IRMAA Calculator lets you check which tier your new income puts you in, and how far you are from the next threshold, using the same 2026 figures as this guide.

What Is Form SSA-44?

Its full name is “Medicare Income-Related Monthly Adjustment Amount – Life-Changing Event.” Social Security normally sets IRMAA from income data the IRS sends it for the tax year two years before the premium year. When a beneficiary reports a qualifying event and a significant drop in income, Social Security makes a new initial determination using a more recent year (SSA POMS HI 01120.001). “Significant” has a precise meaning: the drop must lower your IRMAA tier or eliminate it (20 CFR 418.1215). A drop that leaves you in the same tier does nothing.

The form itself is optional. Social Security's manual says you can make the request verbally or in writing, and describes the SSA-44 as a convenience for people who report a life-changing event without visiting an office (POMS HI 01120.001). The form still puts everything in one signed place and leaves you a copy.

It is not an appeal. An appeal argues the original decision was wrong; SSA-44 accepts it was right on the old data and asks for a new one on new data.

How 2026 Premiums Map to 2024 Income

For 2026, the IRMAA notice is based on your 2024 return (20 CFR 418.1135). If the IRS has not yet supplied that year, Social Security temporarily uses the return from three years back and corrects it later. Modified adjusted gross income for IRMAA is your adjusted gross income plus tax-exempt interest (POMS HI 01101.010), so municipal bond interest counts. Single, head-of-household and qualifying-surviving-spouse filers share the single column; the joint thresholds are exactly twice as high.

2026 IRMAA tiers, per person (based on 2024 MAGI)
TierSingle MAGIJoint MAGIPart B a monthPart D add-onExtra a year
Standard$109,000 or less$218,000 or less$202.90$0.00$0.00
1$109,001 – $137,000$218,001 – $274,000$284.10$14.50$1,148.40
2$137,001 – $171,000$274,001 – $342,000$405.80$37.50$2,884.80
3$171,001 – $205,000$342,001 – $410,000$527.50$60.40$4,620.00
4$205,001 – $499,999$410,001 – $749,999$649.20$83.30$6,355.20
5$500,000 or more$750,000 or more$689.90$91.00$6,936.00

Source: CMS, 2026 Medicare Parts A & B premiums and deductibles; Part D add-ons also in Medicare's income and drug premiums fact sheet. “Extra a year” is the Part B surcharge above the $202.90 standard premium plus the Part D add-on, times 12. Married filing separately has its own, harsher table.

Each tier is a cliff: one dollar over a threshold costs the whole step, for each spouse on Medicare. Retirement removes a salary, so a household can drop two or three tiers at once. To see where your own figures land, check which tier your new income puts you in with the calculator. Every current Medicare, IRMAA and Social Security figure is also collected on our retirement numbers page.

Which Life-Changing Events Qualify?

Eight, and only eight. The regulation lists them in 20 CFR 418.1205 and Social Security's manual calls the list exclusive (POMS HI 01120.005). The event can be yours or your spouse's, and it can have happened years ago, as long as it caused the drop in income for the year you ask Social Security to use.

The eight life-changing events and the evidence Social Security accepts
EventWhat it meansTypical evidence
MarriageA new marriage changes filing status and household incomeMarriage certificate, unless SSA already has proof
Divorce or annulmentThe marriage ended; you now file singleDivorce decree or annulment order
Death of spouseYour spouse died; filing status and income changeDeath certificate, unless already on SSA's records
Work stoppageYou or your spouse stopped working: retirement, a layoff, the sale of a businessRetirement letter, employer statement, record of a business sale, or your statement under penalty of perjury
Work reductionFewer hours, such as phased retirement or a move to part-timeEmployer statement, before-and-after pay stubs, or your statement under penalty of perjury
Loss of income-producing propertyProperty that produced income was lost through no choice of yours: a declared disaster, arson, disease in livestock or crops, eminent domain, or criminal theft or fraudInsurance claim or adjuster's statement; for fraud or theft, proof of a conviction
Loss of pension incomeA traditional defined-benefit or cash-balance pension was terminated, failed or reached a scheduled end you chose earlierLetter from the plan administrator or your original payout election
Employer settlement paymentA settlement from a current or former employer because of its closure, bankruptcy or reorganizationEmployer or court document showing the settlement and its terms

Sources: 20 CFR 418.1205 and 418.1255; POMS HI 01120.010, .025, .030, .035, .040 and .043.

Two of these are narrower than they sound. Loss of income-producing property does not include investment losses. The regulation excludes losses that are “a result of the ordinary risk of investment” and losses at your own direction, such as a sale or a gift (20 CFR 418.1205(e)). A falling stock market, a dividend cut or a bond default is not a life-changing event; Social Security's manual says lost dividend income qualifies only when it results from criminal theft (POMS HI 01120.035). A rental house destroyed in a hurricane qualifies; a stock portfolio down 25% does not.

Loss of pension income means a traditional defined-benefit or cash-balance pension that failed, was terminated, or ended on a schedule you chose earlier, such as a 20-year annuity instead of a lifetime one (POMS HI 01120.040). A 401(k) or IRA is not a pension for this purpose, and deciding to stop withdrawals from one is not an event.

What Does Not Qualify

Anything you chose to do. Social Security's manual gives examples of one-time increases that are not life-changing events: capital gains from the sale of property, lottery or casino winnings, the conversion of an IRA, and cashing bonds. It lists ordinary loss of dividend income, higher medical or living expenses, loss of alimony or child support, and the voluntary sale of income-producing property as reductions that do not qualify either (POMS HI 01120.005). Applied to the decisions retirees actually make:

  • •A large one-time capital gain from selling appreciated stock, a rental or a business interest. The sale was voluntary. (A business owner who sells and stops working does have a work stoppage, but the event is the retirement, not the gain.)
  • •A Roth conversion. Named explicitly as a non-qualifying event.
  • •A required minimum distribution or any other IRA or 401(k) withdrawal. These are not on the list, and the list is exclusive.
  • •Selling your home. Any gain above the exclusion is a capital gain from a voluntary sale.
  • •Market losses. A drop in portfolio income is the ordinary risk of investment.

For these, the right move is planning, not an appeal. Expect one year of higher premiums two years later, and price it into the decision. A large sale can also trigger the 3.8% tax covered in our net investment income tax guide; for conversions, our guide to Roth conversions before RMDs shows how to size them to a bracket.

SSA-44, a New Determination or Reconsideration?

Three problems, three fixes. Using the wrong one wastes months.

Pick the route that matches your situation
  1. A qualifying event lowered your income since the year SSA used

    Retirement, a spouse’s death, divorce and the rest of the eight

    New initial determination (Form SSA-44)

    Proof of the event plus a filed return or a signed MAGI estimate

    No deadline; effective January of the year you ask

    Most common
  2. You amended the return SSA used, or the IRS sent SSA wrong figures

    New initial determination on corrected tax data

    The amended return with the IRS receipt letter or transcript, or IRS proof of the correction

    Fix IRS errors with the IRS first (1-800-829-1040)

    Needs IRS paperwork
  3. You believe SSA applied the rules wrongly to the data it had

    Reconsideration (Form SSA-561)

    A request explaining why the determination is wrong

    Within 60 days of receiving the notice

    Deadline applies

You can ask for a new determination and a reconsideration at the same time if you are within the 60-day appeal window (POMS HI 01120.001).

Two details trip people up. First, a reconsideration that argues only that the IRS figures are wrong is dismissed; the regulation sends you to the IRS for a correction and then back to Social Security for a new determination (20 CFR 418.1330). Social Security needs a letter from the IRS or a transcript showing the corrected data (POMS HI 01120.050). Second, an amended return counts only with an IRS receipt letter, a transcript or a copy from the IRS, and must be provided within three calendar years after the year it amends (POMS HI 01120.045).

How to File, Step by Step

  1. 1Read the notice and note the dates.Social Security's IRMAA letter states the tax year and MAGI it used, your filing status, and the tier. Write down the date on the letter: the 60-day reconsideration clock runs from the day you receive it, which Social Security presumes is five days after that date (POMS HI 01140.001). Check its MAGI against line 11 plus line 2a of that year's Form 1040; a mismatch is a data problem, not a life-changing event.
  2. 2Confirm the event is on the list and the drop changes your tier.Match your situation to one of the eight events, then look up your estimated MAGI in the tier table. Same tier, no benefit.
  3. 3Choose the year.You can ask Social Security to use the year before the premium year or the premium year itself (POMS HI 01120.030). If last year's filed return already shows the drop, send it; if it still holds most of a salary, estimate the current year. The form also lets you give a second estimate for the following premium year; if you do not, Social Security uses the first estimate for both years (POMS HI 01120.005).
  4. 4Build the estimate the way the IRS will.Include wages earned before you stopped, pensions, IRA and 401(k) withdrawals including RMDs, interest, dividends, net capital gains, taxable Social Security and tax-exempt interest, plus any conversion or sale planned before December 31. You sign the estimate under penalty of perjury (20 CFR 418.1265), and the IRS will report the real number later.
  5. 5Gather the evidence.Proof of the event (retirement letter, employer statement, death certificate, divorce decree, pension termination letter, insurance claim) and, if you have it, the signed tax return for the year you want used. For pension and property losses, only originals or copies from the original source count (20 CFR 418.1260). For work stoppage or reduction, your signed statement can serve as proof when no employer letter exists (POMS HI 01120.030).
  6. 6Submit, and have each spouse submit separately.Download Form SSA-44, complete it, and send it with copies of your evidence to your local Social Security office, or call 1-800-772-1213 to make the request by phone or set up an appointment. Social Security's lower-IRMAA page lists the current ways to submit, including any online option; check it before you mail anything. Social Security may want to see original or certified copies of a death certificate, marriage record or divorce decree, so ask the office whether to bring them to an appointment rather than mail them. A request covers only the person who files it, so a married couple both paying IRMAA files two requests (POMS HI 01120.005).
  7. 7Watch for the decision and keep paying.Your current premium keeps coming out of your benefit until Social Security decides. When it approves the request, the new determination generally takes effect in January of the year you asked, or the first month of your Part B coverage if later (20 CFR 418.1230), and Social Security adjusts the months already paid. File early in the year: the decision does not reach back to an earlier premium year unless the event happened in October through December and you ask by March 31 (POMS HI 01120.005B).
  8. 8Send the tax return when you file it.If you used an estimate, Social Security asks for a signed copy of the return once it is filed, and you may update your estimate as often as needed (POMS HI 01120.065).

Example 1: A Couple Who Retired in 2025

Mark and Susan are both 66 in 2026 and both on Medicare. Mark retired on March 31, 2025; Susan stopped consulting years ago. Their 2024 joint return shows Mark's last full year of salary. In 2026they live on IRA withdrawals, their taxable account and Susan's Social Security; Mark is delaying his own benefit to 70. They are hypothetical, and every figure below is calculated with the same engine as our IRMAA calculator.

Mark and Susan: the year Social Security used and the year they ask it to use
Income2024 return2026 estimate
Wages$245,000$0
IRA withdrawals$0$95,000
Dividends, interest and capital gains$45,000$45,000
Taxable Social Security (of $26,000 received in 2026)$0$22,100
Tax-exempt interest$7,000$7,000
MAGI for IRMAA$297,000$169,100
Joint tiertier 2the standard premium
Extra premiums a year, both of them$5,769.60$0.00

Their 2024 MAGI of $297,000 puts them in joint tier 2 ($274,001 – $342,000): each pays $405.80 a month for Part B and $37.50 on top of the Part D plan, $240.40 a month above standard. Retirement is work stoppage, so in January 2026 each of them files an SSA-44 with Mark's retirement letter and a 2026 MAGI estimate of $169,100. That is below $218,000, so both drop to the standard premium for the whole year. The surcharge removed: $5,769.60 for the two of them in 2026.

Susan files her own request even though the retirement was Mark's; work stoppage covers a spouse's retirement, but a decision applies only to the person who asks for it. Had either skipped filing, that spouse would have kept paying $2,884.80for the year. They did miss one thing: their 2025 premiums used a 2023 return with a full salary, and Mark's March 2025 retirement would have supported an SSA-44 then. That year is gone, because a new determination does not reach back to a prior premium year unless the event fell in its last three months.

If the estimate turns out low

Suppose that in December 2026 they decide to convert $60,000 to a Roth IRA. Their actual MAGI becomes $229,100, which is joint tier 1. When the IRS reports that return, Social Security redoes 2026 and bills the difference for every month: $2,296.80 for the couple. Updating the estimate when they decide on the conversion avoids a surprise, and leaves the choice to them: convert less, or convert and accept the bill.

Example 2: A Widow and Single Thresholds

Carol is 76. Her husband Richard died in March 2025. Richard took his $135,000 pension as a single-life annuity, so it stopped when he died, and Carol now receives his larger Social Security benefit as a survivor in place of her own. Her 2026 IRMAA notice was based on their 2024 joint return. She is hypothetical.

Carol: the joint return Social Security used and her first single year
Income2024 joint return2026 estimate, single
Richard's pension$135,000$0
Social Security received$72,000$45,000
Taxable part of Social Security$61,200$38,250
IRA withdrawals (RMDs)$48,000$52,000
Dividends and interest$30,000$30,000
Tax-exempt interest$5,000$5,000
MAGI for IRMAA$279,200$125,250
TierJoint tier 2Single tier 1
Carol's extra premiums a year$2,884.80$1,148.40

The first year: SSA-44 helps. Without a request, Carol pays joint tier 2 in 2026 on income that included a pension that no longer exists. Death of a spouse is a life-changing event, so she files an SSA-44 with the death certificate (if Social Security does not already have proof of death) and her 2026 estimate of $125,250 as a single filer. Her MAGI has fallen by more than half, and she drops to single tier 1, saving $1,736.40 in 2026. She gives the same estimate for 2027, so Social Security does not fall back on the 2025 joint return, which still holds three months of Richard's pension.

From then on: single thresholds. Once Social Security uses her own single returns, from 2028 on if not sooner, her income is measured against the single column, which starts at $109,000 instead of $218,000. At $125,250 she stays in single tier 1 every year. The same income on a joint return would be the standard premium. That gap, $1,148.40a year in Carol's case, is the IRMAA part of what planners call the widow's penalty, and no form removes it: being widowed is the event, and filing single is the permanent result. The same shift moves her into the single income tax brackets.

What she can control is MAGI. She is $16,250 above the first single threshold. If she gives that much of her RMD directly to charity as a qualified charitable distribution, which she can from age 70½, it never enters her adjusted gross income, and she pays the standard premium two years later. For the Social Security side of widowhood, including how the survivor benefit replaces her own, see our guide to Social Security survivor benefits.

When filing would not help

Had Richard's pension continued as a survivor annuity, Carol's single MAGI could land in a higher single tier than the couple's joint tier, and a request would lower nothing. Social Security does not accept an estimate that would raise IRMAA above the figure from IRS data (POMS HI 01120.065), so filing would not hurt, but the higher tier arrives on its own once her single return is used. Run both numbers through the IRMAA Calculator before deciding.

What Happens Next Year

An approved SSA-44 does not end the matter. Social Security keeps using the more recent year's figures until one of these happens: the IRS reports your MAGI for that year or a later one, the year used becomes more than three years older than the premium year, you report another life-changing event, or you report that your income changed (20 CFR 418.1235).

In practice, the IRS figure arrives about two years later. When it does, Social Security compares it with your estimate. If your actual MAGI is in a higher tier, it makes a new determination and applies it retroactively to every enrolled month of that year (20 CFR 418.1245), and you owe the difference, collected from your benefit or billed. If it is in the same or a lower tier, nothing is owed. You can send updated income information any time until the end of the year after the year you estimated (20 CFR 418.1240).

After the years your estimates cover, the normal lookback resumes. If that would still pick up a return with a partial salary or a deferred-compensation payout, file again. Our Retirement Age Calculator helps if you are still choosing the year to stop, and the Healthcare Cost Estimator puts premiums and out-of-pocket costs into one annual figure.

Common Mistakes

  • •Filing for a voluntary spike. A Roth conversion, a home sale or a big gain is not an event. The request is dismissed and the 60-day appeal window keeps running.
  • •Only one spouse filing. Each spouse paying IRMAA needs their own request, even when the event was the other spouse's retirement.
  • •Waiting until next year. A request takes effect from January of the year you make it. Filing in February 2027 for a 2026 retirement does nothing for 2026 unless the retirement was in the last three months of 2026.
  • •Leaving items out of the estimate. Tax-exempt interest, the taxable part of Social Security, capital gain distributions from funds and a planned December conversion all count.
  • •Lowballing the estimate. The IRS reports the real figure later, and the difference is collected for the whole year.
  • •Using SSA-44 for a data error. If the MAGI on the notice does not match your return, the fix is an IRS correction or an amended return with the IRS receipt letter, not a life-changing event.
  • •Not keeping copies. Keep the signed form, every document, the date and method you sent it, and every letter from Social Security, with the tax return for the year you estimated. Our list of financial records to keep covers how long.

If You Are Denied

Read the letter closely. If Social Security says your event does not qualify, it has dismissed the request for a new determination, and that dismissal cannot itself be appealed (POMS HI 01140.001). If you believe it misread the facts, for example by treating a phased retirement as a voluntary drop in income, gather better evidence of the work reduction and file again; there is no limit on new requests.

To challenge the IRMAA determination itself, request reconsideration on Form SSA-561 within 60 days of receiving the notice. The manual notes that a dismissed request for a new determination may be good cause for filing a reconsideration late (POMS HI 01140.001), and Social Security staff are told to explain both options and to accept any appeal you insist on filing (POMS HI 01140.005).

If reconsideration fails, the appeal leaves Social Security. The next level is a hearing before an administrative law judge in the Department of Health and Human Services' Office of Medicare Hearings and Appeals, requested on Form HA-501-U5; then review by the Medicare Appeals Council; then federal court (POMS HI 01140.010; 20 CFR 418.1350). The reconsideration decision states the deadline for asking for a hearing.

Questions to ask your CPA or Social Security

Use this guide to decide whether you qualify and what to send. Then confirm the income estimate with your CPA, who can project it from your actual accounts, and the filing details with Social Security. Bring the IRMAA notice, the last two tax returns and your proof of the event.

  1. For your CPA: what will our MAGI be for this year, counting tax-exempt interest, fund capital gain distributions and the taxable part of Social Security, and how much room is there below the next IRMAA threshold?
  2. For your CPA: should we ask Social Security to use last year's return or this year's estimate, and what should the second-year estimate be?
  3. For your CPA: if we do a Roth conversion or sell appreciated stock later this year, how does that change the estimate we gave Social Security, and when should we update it?
  4. For Social Security: what proof of the event do you already have on record, and what do you still need from me? Can I bring originals to an appointment instead of mailing them?
  5. For Social Security: has my spouse's request been received separately, and which premium years will the new determination cover?
  6. For Social Security: if the MAGI on my notice does not match my return, what IRS document do you need before you can correct it?

Frequently Asked Questions

What is Form SSA-44?

Form SSA-44, "Medicare Income-Related Monthly Adjustment Amount – Life-Changing Event," asks Social Security to set your IRMAA from a more recent year’s income instead of the tax return from two years earlier. You can use it only if one of eight life-changing events reduced your income: marriage, divorce or annulment, death of a spouse, work stoppage, work reduction, loss of income-producing property, loss of pension income, or an employer settlement payment. The form is optional; you can also make the request by phone or in person.

Does retirement count as a life-changing event for IRMAA?

Yes. Retirement is work stoppage, and moving from full-time to part-time work is work reduction. Either can be your own or your spouse’s. Social Security accepts a retirement letter, an employer statement or your own statement signed under penalty of perjury as proof, plus an estimate of your modified adjusted gross income for the year you ask it to use.

Can I use SSA-44 for a Roth conversion, a capital gain or selling my house?

No. Social Security’s list of life-changing events is exclusive, and its own guidance names capital gains from the sale of property, the conversion of an IRA and cashing in bonds as one-time increases that do not qualify. The same goes for a large IRA withdrawal or an RMD. These are choices you made, so the surcharge two years later stands.

Which year's income does Social Security use for 2026 IRMAA?

Your 2024 tax return, two years before the premium year. If that return is not available, Social Security temporarily uses the return from three years earlier. With Form SSA-44 you ask it to use 2025 or 2026 instead, by sending a filed return or a signed estimate of that year’s MAGI. MAGI here means adjusted gross income plus tax-exempt interest.

What happens if my SSA-44 estimate turns out too low?

Once the IRS reports your actual income for the year you estimated, Social Security redoes the determination and makes retroactive adjustments for every month of that premium year. If your real MAGI lands in a higher tier than your estimate, you owe the difference. If it lands lower, you get money back. Tell Social Security as soon as you know your estimate has changed.

How long do I have to file Form SSA-44?

There is no fixed deadline. You can ask any time after the event and the drop in income, and the event can be years old. The catch is the effective date: a new decision normally starts in January of the year you ask (or your first month of Part B). It reaches back to the prior year only if the event happened in October, November or December and you file by March 31. So file in the same year you want the premium lowered.

Do both spouses have to file Form SSA-44?

Yes, if both are paying IRMAA. A life-changing event request applies only to the person who files it, even when the event was the other spouse’s retirement. Social Security will not extend one spouse’s decision to the other, so each spouse on Medicare files their own request.

What is the difference between SSA-44 and SSA-561?

SSA-44 asks for a new initial determination because a life-changing event lowered your income. Form SSA-561 is a request for reconsideration, an appeal that says the determination itself is wrong. You have 60 days from receiving the IRMAA notice to request reconsideration. If the IRS gave Social Security wrong figures, or you amended the return, you need IRS proof of the correction or an IRS acknowledgment of the amended return and a request for a new determination.

Does SSA-44 help a widow with IRMAA?

For the first year or two, often yes. Death of a spouse is a life-changing event, so a widow can ask Social Security to use her current, lower single income instead of the couple’s joint return. But from the year her own single return is used, single thresholds apply for good. They are half the joint thresholds, so the same income can cost more in surcharges than it did as a couple.

What if Social Security denies my SSA-44 request?

A request that is simply dismissed, for example because the event does not qualify, cannot itself be appealed, but you can still request reconsideration of the IRMAA determination within 60 days of the notice. After reconsideration, the next level is a hearing before an administrative law judge in HHS’s Office of Medicare Hearings and Appeals, requested on Form HA-501-U5, then the Medicare Appeals Council and federal court.

The Bottom Line

If your IRMAA notice reflects a life you no longer live, because you stopped working, cut back, lost a spouse, married, divorced or lost a pension, file Form SSA-44 in the same year, one request per spouse, with proof of the event and an honest estimate. It costs nothing and often saves thousands. If the notice reflects a sale, a conversion or a withdrawal you chose, there is nothing to appeal; plan the next one with the two-year lookback in mind. For the full picture of enrollment and the surcharges, read our Medicare enrollment and IRMAA guide.

Check Your New IRMAA Tier

Enter this year's income and see which 2026 tier it puts you in, before you file. Free, no sign-up.

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