If Your Spouse Is Under 65 and Still Working, Your Medicare Premium Is Set by Their Salary. The Form That Fixes It Can’t Be Filed Until They Quit
When one spouse still collects a paycheck and the other is on Medicare, the IRS hands Social Security a number that can cost the retiree thousands a year in surcharges tied to income that was never theirs to spend.
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A 67-year-old retiree lives on a pension and IRA withdrawals. He opens his Medicare premium notice and finds a Part B bill priced for a high earner. His 61-year-old wife still collects a salary, and the couple files a joint return. Social Security set his Medicare premium using her paycheck. Couples in this split keep asking on Reddit’s r/medicare forum whether the older spouse can avoid IRMAA at all.
The surcharge reaches only roughly 8% of Part B enrollees. If your joint income is at or below $218,000, you pay the standard $202.90 a month, and nothing below changes that.
Your Joint Return Sets Your Medicare Bill
Social Security gets the most recent federal tax return the IRS provides. It measures modified adjusted gross income (MAGI), defined as total adjusted gross income and tax-exempt interest income. Municipal bond interest feels tax-free, but it counts. For 2026 premiums, SSA generally reads your 2024 tax return.
A joint return reports both spouses’ income together, so every dollar of her salary counts toward his premium. She pays nothing because she isn’t enrolled in Medicare yet. He absorbs the whole surcharge:
| Joint MAGI (2024 return) | Part B surcharge, monthly, per Medicare enrollee | Part D surcharge, monthly, per Medicare enrollee | Combined surcharge, annual, per Medicare enrollee |
|---|---|---|---|
| $218,000 or less | $0.00 | $0.00 | $0 |
| Above $218,000 to $274,000 | $81.20 | $14.50 | $1,148.40 |
| Above $274,000 to $342,000 | $202.90 | $37.50 | $2,884.80 |
Say her salary drives joint MAGI to $300,000. He lands in the second level, his total Part B premium reaches $405.80 a month, and he pays $2,884.80 a year in surcharges on income he never earned.
Why Form SSA-44 Can’t Help Yet
The standard fix is Form SSA-44. It lists a qualifying work stoppage this way: “You or your spouse stopped working or reduced the hours that you work.” Her retirement counts. But timing creates a problem. SSA accepts the request from someone who has had a life-changing event that reduced household income. That describes an event in the past. A paycheck that is still coming hasn’t reduced anything, so he cannot file in advance against her planned retirement date.
The other qualifying events are marriage, divorce, the death of a spouse, loss of income, and an employer settlement payment. Voluntary increases don’t counts. A Roth conversion or a home sale stays on the return no matter how much it raised MAGI.
IRMAA is only one of several Medicare costs tied to income the listed premium doesn’t tell you about. We mapped out the surcharges, the coverage gaps, and the enrollment traps that catch retirees in a free guide (you can grab it here).
What You Can Do While Her Paycheck Continues
Consider filing separately, and check the math first. A spouse who files separately but lived with the other spouse at any point in the year owes no surcharge only if his own MAGI stays at or below $109,000. One dollar above that line drops him into a $446.30 Part B surcharge and an $83.30 Part D surcharge, which add up to $6,355.20 a year. Separate returns also cost tax: higher rates, lost credits, and up to 85% of Social Security benefits counted as taxable income. Separate filing makes sense only when the extra income tax comes in below the surcharge it removes. Run the return both ways before you decide.
The lookback also changes the cost. A 2026 return filed separately next spring determines his 2028 premium. If she plans to retire before then, SSA-44 may fix 2028 anyway, and the separate return would only add tax.
Time her exit with the tax year in mind. Her final salary, payouts for unused vacation, and any severance all land on that year’s return. Once she stops working, SSA-44 lets him ask SSA to use a newer, lower year of income. The form gives an example: if SSA used your 2023 return to decide your 2026 IRMAA, you can ask us to use your 2024 information.
Collect the paperwork now. Expect to submit an employer statement and pay stubs showing her last day of work. Add a realistic estimate of household MAGI for the first full year without her salary.
File the Week She Stops Working
As soon as her last day of work passes, submit SSA-44 online through your Social Security account, by fax or mail to a local office, or by phone at 1-800-772-1213. Include the employer letter and your income estimate. Her salary can sit on more than one return inside the lookback window, so file again for each premium year that SSA still bases on a year she was working. If you wait, he keeps paying her-salary pricing for up to $2,884.80 a year after the paycheck has stopped.
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Jake has been been working in financial media for almost 15 years. He focuses on all things personal finance for 24/7 Wall St. with high hopes to educate and entertain. Most recently, Jake spent 12 years working various roles at The Motley Fool. He started copy editing fool.com content, worked on premium and marketing campaigns, and helped launch The Ascent, a personal finance brand.
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