How the timing works
IRMAA, the extra Part B and Part D premium for higher incomes, generally uses the federal tax return from two years before the premium year. So a sale shows up in your Medicare premiums like this:
| Year you sell | Year the gain can raise your premiums |
|---|---|
| 2024 | 2026 |
| 2025 | 2027 |
| 2026 | 2028 |
The brackets are cliffs. In 2026, IRMAA starts above $109,000 of MAGI for a single filer and $218,000 for a married couple filing jointly, and one dollar over a line means the whole higher amount for the year. See the full table on Medicare costs in 2026.
What part of the sale counts
- Your main home: if you owned it and lived in it for at least 2 of the 5 years before the sale, federal law lets you exclude part or all of the gain from income (a larger amount for married couples filing jointly). Only gain above the exclusion counts toward MAGI. The IRS explains the limits in Topic 701 and Publication 523.
- A second home, vacation home or rental: the main-home exclusion doesn't apply, so the taxable gain counts.
- Your old home after you've moved: if you rent it out or leave it empty for years before selling, you may no longer meet the 2-of-5-years use test. Check before you list it.
Why this comes up so often in Florida
Florida draws retirees who sell a house in another state and buy here, often in the same year they start Medicare. Florida's lack of a state income tax is part of the appeal, but it doesn't change IRMAA, which looks only at federal income. If the sale falls in the same year as other income, such as a last paycheck, a pension start or a large IRA withdrawal, the total can cross a bracket.
What you can do
- Know your gain. Work out your expected gain and exclusion with a tax professional before you sell.
- Look at the whole year. If you can, avoid stacking the sale with other one-time income in the same tax year.
- Use SSA-44 for the events that qualify. If you also retired, that work stoppage is a life-changing event, but Form SSA-44 replaces the old year with your estimate for the new year, which includes any gain from a sale that year.
- Check the result. If the IRS figures Social Security used are wrong, or you filed an amended return, ask Social Security for a reconsideration.
Moving also changes your Medicare plans; see moving to Florida with Medicare. Estimate a premium with the IRMAA calculator, or you can request a call from a licensed insurance agent.
Related questions
What is IRMAA?
Income-based premiums explained.
How do I lower IRMAA after I retire?
Form SSA-44, step by step.
What does Medicare cost per month in Florida?
All the monthly pieces.
Sources
- Social Security POMS HI 01101.010 — MAGI and the tax year used for IRMAA
- eCFR — 20 CFR 418.1205 and 418.1210, what is and isn't a major life-changing event
- Social Security — Premiums: rules for higher-income beneficiaries
- IRS — Topic 701, Sale of your home
- IRS — Publication 523, Selling Your Home
- CMS — 2026 Medicare Parts A & B premiums and deductibles (IRMAA tables)
- Florida Constitution — Article VII, Section 5 (income taxes)
More questions in this guide
- If I never worked in the U.S., can I buy Medicare Part A in Florida?
- Do I have to pay a premium for Medicare Part A?
- How do I lower my IRMAA after I retire?
- How much does Medicare cost per month in Florida?
- What is IRMAA and will I have to pay it?
Part of the guide: Medicare costs in 2026 for Floridians · All questions
Frequently asked questions
Is selling my house a life-changing event I can report on Form SSA-44?
No. The rules list a short set of events, such as retirement, a spouse's death or a lost pension. Losing income-producing property counts only when it happens through no choice of yours, and the rule specifically leaves out a sale.
Does a big gain raise my premiums forever?
No. IRMAA is set each year from one year's income. A one-time gain affects the premium year two years later; after that, Social Security uses your newer, usually lower, income.
Does Florida tax the gain?
Florida has no state personal income tax, but that doesn't help with IRMAA. Social Security looks only at your federal return, where the taxable gain shows up in your adjusted gross income.
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