Home Office Depreciation Recapture When You Sell: Smaller Than You Fear.

A marketing consultant has claimed a home office on her Schedule C since 2018: 250 square feet, a Form 8829 every year, about $900 of depreciation annually. Now the house is going on the market, and a neighbor has warned her the deduction was a trap, that the IRS will claw back her home-sale exclusion because the house was part business. The neighbor has the shape of the rule right and the size completely wrong. Home office depreciation recapture is real, it is also small, and the exclusion survives intact.

IRC §121(d)(6) denies the exclusion only for gain up to the depreciation adjustments taken after May 6, 1997, the effective date Congress picked when it built the modern exclusion. Everything else about the sale stays a normal §121 sale, including the two-of-five-year ownership and use tests. The recaptured slice is unrecaptured §1250 gain, which is taxed at your ordinary rate but capped at 25% under §1(h): a seller in the 22% bracket pays 22% on it, not 25%. It flows through the Schedule D worksheets rather than arriving as any kind of penalty. The depreciation you claimed was worth your full ordinary rate, plus self-employment tax savings, in the years you claimed it, so paying up to 25% back later is a trade that favored you the whole way. And because the recapture rides your ordinary bracket, a seller who closes in a low-income year pays less on the same depreciation, which occasionally makes December versus January worth a conversation.

The generous part of the regulation is the no-allocation rule. Under Treas. Reg. §1.121-1(e), when the office sits within the same dwelling unit you live in, you do not split the sale into a business half and a personal half; the whole gain is eligible for the exclusion except the depreciation itself. The regulation's own example is an attorney with a $13,000 gain and $2,000 of office depreciation who recognizes exactly $2,000 and excludes the rest. A detached structure flips the answer: a converted garage or backyard studio requires allocating the sale price and basis between the dwelling and the business structure, and the business piece gets no exclusion unless it separately meets the use tests. If your office is a separate building, the stakes are an order of magnitude higher and worth planning before you list, not after. And if the whole property spent years as a rental before you moved in, that is a different regime with its own math; see converting a rental into a primary residence.

The simplified method under Rev. Proc. 2013-13, the flat $5 per square foot up to 300 square feet, comes with a feature that matters at sale: depreciation for simplified-method years is deemed zero, so those years add nothing to recapture. A consultant who used the simplified method for all eight years sells with no §121(d)(6) recapture at all. Most long-running offices are a mix, some regular-method years and some simplified, so the recapture number is just the sum of the regular years' Form 8829 depreciation lines, where the office building share runs at 2.564% a year over 39 years. Pull the old returns and add up one line per year; that total times 25% is your worst case.

Some owners never claim depreciation specifically to dodge this moment, and the IRS position is that recapture applies to depreciation allowed or allowable, claimed or not. But Treas. Reg. §1.121-1(d) contains a mercy rule: with adequate records showing you claimed less than you could have, the recognized gain is limited to the depreciation you actually deducted. So the skipper avoids the future 25% tax by forfeiting a deduction worth 30% or more every year in ordinary and self-employment tax. That is a bad trade in both directions, and the right answer is to claim the deduction, bank the annual savings, and treat the eventual recapture as the cheap loan payoff it is. S corp owners are playing a different game entirely, reimbursing the office through an accountable plan rather than a Form 8829, with its own rules at sale.