A man in his late sixties has spent decades running a bed-and-breakfast out of the same building he lives in. He has a longtime employee who knows every detail of the operation. Selling the business to her feels right, but the building is both his home and his livelihood. The IRS treats the sale as two transactions, and the taxable portion can shrink his Social Security check and raise his Medicare premiums.
This dilemma is common. Online forums for small innkeepers are full of owners in their mid-sixties asking the same question: how do I hand this off to someone I trust without handing the IRS a windfall and shrinking my retirement income? The Social Security piece is what most miss until a tax preparer flags it.
Why the sale year is the danger zone
Two Social Security mechanics drive the outcome, both triggered by a spike in adjusted gross income (AGI) in the year the property changes hands.
The first is the so-called tax torpedo. Once provisional income climbs past modest thresholds, up to 85% of his Social Security benefit becomes taxable. That figure is the share of the benefit pulled into taxable income, not a tax rate. For a retiree whose benefit had been mostly tax-free, a single large capital gain can flip the switch and expose a meaningful slice of the annual check to ordinary income tax.
The second is the Medicare income-related monthly adjustment amount, known as IRMAA. Medicare looks back two years at modified adjusted gross income (MAGI) to set premiums. A 2026 sale shapes his 2028 premium. The standard Part B premium in 2026 is $202.90 a month, but a single filer with MAGI above $109,000 starts paying a surcharge, and the brackets climb steeply from there. A one-time gain large enough to push him into a higher tier can add hundreds of dollars per month to his Medicare bill, with surcharges stacking on Part D as well.
How the mixed-use sale gets split
Because the building is both residence and business, the gain must be allocated between the two uses. The personal-residence portion can qualify for the home-sale exclusion, which shields up to $250,000 of gain for a single filer. The business portion gets no such shield and is fully taxable.
The thornier piece is depreciation recapture. Every year he wrote off depreciation on the business portion, he lowered his taxable income at ordinary rates. The IRS takes that back at sale, taxing recaptured depreciation as ordinary income at rates up to 25%. Recapture also applies to the residence portion to the extent depreciation was claimed after May 6, 1997. This figure surprises most owner-operators because it is calculated on what they already deducted, not on appreciation.
The taxable business gain plus recapture lands in adjusted gross income (AGI), drags the Social Security benefit into the torpedo, and resets the IRMAA tier two years out.
The succession structure that softens the blow
Selling to the employee opens a useful door: an installment sale. Instead of taking the full price in one year, he takes payments over several. The capital gain portion gets recognized as payments come in, keeping each year’s MAGI lower and holding him under the next IRMAA tier while limiting how much Social Security gets pulled into tax each year.
The critical caveat is that depreciation recapture is generally taxed up front in the year of sale and cannot be spread out by an installment sale. The recapture hit lands in year one no matter how payments are structured. The installment approach softens the capital gains piece and the Social Security and IRMAA consequences, but it does not make recapture disappear.
What to think through before signing
Two things matter more than people expect when a mixed-use sale collides with Social Security and Medicare:
- Model the recapture before setting a price. The depreciation he has claimed over the years is the single largest variable in how painful the sale year looks. Knowing the recapture number first lets him decide whether an installment structure is worth the complexity or whether the bulk of the tax bill hits in year one anyway.
- Watch the IRMAA cliffs, not just the tax bracket. A few thousand dollars of extra income can push him into the next Medicare tier and raise his premium for an entire year. With the 2026 cost-of-living adjustment (COLA) at 2.8%, his benefit is finally keeping pace with inflation, and he does not want a one-time gain to claw a chunk of that back through higher Medicare premiums in 2028.
The cleanest version of this handoff involves a tax professional running the numbers on the allocation, recapture, and a payment schedule that keeps each year’s income under the thresholds that matter. Every B&B is different, and the line between a good plan and a costly one often comes down to details that only show up once someone runs the actual figures.
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