How Selling Your House Can Raise Your Medicare Premiums Two Years Later

Medicare Prices Your Premiums Off a Two-Year-Old Tax Return

Does selling your house affect your Medicare premiums? It can, and the reason is timing. Medicare sets your premiums using your tax return from two years earlier. The first premium you pay at 65 comes off the return you filed at 63, and the profit on a home sale lands on that return as income, the same way a paycheck does.

So you can sell at 63, roll the money into the next place, and open a Medicare bill two years later that's hundreds of dollars a month higher than what you planned around. The sale itself goes fine. The timing is what gets expensive.

The surcharge has a name. It's called IRMAA, and fewer than 1 in 10 people on Medicare pay it. Your 2026 premiums come off your 2024 tax return, and your 2027 premiums come off 2025.

That's why 63 is where this starts. Sell in the year you turn 62 and that return sets your premium for the year you turn 64, when you're not on Medicare yet and there's no premium to adjust. Sell in the year you turn 63 and it raises the premium in your first year of Medicare. Every year after that works the same way. At 63 you don't have a Medicare card and you probably haven't given Medicare a single thought, but Medicare is already counting that year's income.

Here's what counts toward the number: wages, pension, the taxable part of your Social Security, dividends, interest, IRA and 401(k) withdrawals, and capital gains. Municipal bond interest gets added back in too, even though you paid no income tax on it. Capital gains is the piece that matters, because the taxable profit on a house sale is a capital gain. It doesn't feel like income, since you sold one place and bought another, but on paper it's a gain and it counts.

The $250,000 Shield, and Why It Doesn't Cover What It Used To

Your house didn't go up in value that much? For a lot of sellers that's exactly right, because the tax code has a shield built in for your main home. It's called the Section 121 exclusion, and it lets you exclude $250,000 of gain if you're single and $500,000 if you're married filing jointly.

The test is ownership and use. You have to have owned it and lived in it as your main home for two of the last five years, and you can't have used the exclusion on another home in the past two years. Rental property doesn't qualify.

The math is simple. Sale price, minus what you paid, minus any improvements, gives you the gain. Subtract the exclusion, and if what's left is zero or less, none of it is taxed and there's no surcharge waiting at 65.

The exclusion is where ordinary owners get caught. Those numbers came from a law passed in 1997 and they've never been adjusted for inflation. Since then the typical American home has roughly tripled in price. The cost of everything else has about doubled, and the exclusion hasn't moved a dollar. If it had kept up with inflation it would sit around $500,000 for a single person and $1 million for a couple.

Go look at what you paid and what it's worth today. This lands hardest on people whose wealth is mostly in the house, who lived there 30 years while the market went up. Say you bought in the mid-90s for $175,000 and the house could sell today for $800,000. That's a $625,000 gain. Single, you exclude $250,000, which leaves $375,000 of capital gain on that year's return. Stacked on top of whatever else you had coming in, that puts you well past the first surcharge line.

What the Surcharge Costs in 2026

The standard Part B premium is $202.90 a month. If you're single and your income two years back was $109,000 or less, that's what you pay and nothing changes.

Go $1 over $109,000 and you're in the first tier. Part B goes up by $81.20 a month and Part D adds another $14.50, which comes to about $1,150 for the year. If you're already taking Social Security you never write a check for it. It comes out of your benefit before the deposit lands, so a smaller number just shows up.

It is literally $1. This is a cliff, and crossing the line by a single dollar means you owe the whole tier for the entire year. There are tiers above that, and at the top the Part B surcharge alone is $487 a month on top of your normal premium.

Married, the thresholds double. The first line sits at $218,000 instead of $109,000, and the tiers above double as well, up to the top one, which starts at $750,000. The extra room helps, but the surcharge is per person, so if you're both on Medicare you're both writing a higher check. A couple who sells and lands in the first tier adds about $2,300 a year between the two of them.

What You Can Do Before You Sign

First, raise your basis. Basis is what the house cost you, and capital improvements add to it. The new roof, the HVAC system, the addition off the back, the kitchen you redid in 2011, all of it comes off the gain if you have it documented. Repairs don't count. Patching a plumbing leak is a repair, and a new roof is an improvement.

Go back to that $625,000 gain. Document $80,000 of improvements across the years you owned the place and the gain drops to $545,000, which might drop you a tier. Worth the time digging up receipts, permits, contractor invoices, whatever is still in your files.

Second, watch the other income in the year you sell. You can't undo the gain once the house closes, but you can avoid stacking a big Roth conversion or an extra IRA withdrawal on top of it in the same calendar year. Both moves have to happen before the closing. Once the deed transfers there isn't much left to adjust.

Third, know what an appeal covers. The form for appealing an IRMAA surcharge is the SSA-44, and it exists for specific life-changing events: marriage, divorce, death of a spouse, losing a job, having your hours cut, losing a pension. A one-time gain from a house sale isn't on that list. You'll get denied and pay the surcharge anyway.

Fourth, it resets. IRMAA is recalculated every year on a fresh two-year lookback, so if a 2024 sale raises your 2026 premiums, 2027 comes back down once your income is normal again. It's one expensive year to manage.

Why One Big Year Is the Real Problem

Back to the year you turn 63. Run this math before you sign anything, because by the time the bill shows up at 65 there's no appeal left to file.

There's a bigger pattern here than the house. A home sale drops a large lump sum of income into a single year, and that lump sum is what trips all of these wires. Income that arrives a little at a time, month after month, is completely different on your tax return than one giant windfall.

So where does steady income come from once your paycheck stops? Retirees get there a few ways. Social Security, and a pension if you're lucky enough to have one. Dividends from a portfolio. Rent from a rental property. Interest from someone else's mortgage, which is called private mortgage note lending, where an individual holds the paper on a house and gets paid every month with the property itself standing behind the loan, the same way a bank would.