You bought a $200,000 piece of machinery five years ago, claimed 100% bonus depreciation, and dropped your federal tax bill by roughly $74,000 in year one. The asset paid for itself before it stopped smelling new. Now you're selling it for $90,000 and you assume the gain is a tidy long-term capital gain at 20%. Your CPA calls. The entire $90,000 is ordinary income. Welcome to depreciation recapture.
Sections 1245 and 1250 of the Internal Revenue Code govern this moment — the sale of business property after you've taken depreciation, Section 179, or bonus depreciation against it. The rules are unforgiving for taxpayers who only learn them at closing, and they're particularly punishing in an era when the One Big Beautiful Bill Act (OBBBA) has made 100% bonus depreciation permanent again. The bigger the deduction you took going in, the bigger the recapture coming out. Understanding which section applies to which asset — and how the math actually works — is the difference between an exit you celebrate and one you regret.
What Depreciation Recapture Actually Does
When you depreciate a business asset, the IRS lets you deduct part of its cost each year against ordinary income — wages, business profit, rental income, the works. Those deductions reduce your taxable income at ordinary rates, which top out at 37% federally for individuals and pass-throughs in 2026.
The unstated bargain: when you eventually sell the asset for more than its depreciated (adjusted) basis, the IRS wants the value of those deductions back at the same rates it gave them to you. That clawback is depreciation recapture. The portion of your gain that represents previously claimed depreciation is taxed as ordinary income (or capped at 25% for real estate, as we'll see), not at the friendlier long-term capital gains rates of 0%, 15%, or 20%.
The takeaway most owners miss: depreciation isn't a permanent tax cut. It's a timing tool — and unless you die holding the asset (and your heirs get a step-up in basis) or roll the proceeds into a like-kind exchange under Section 1031, the recapture bill always comes due.
Section 1245: Personal Property and the Full Ordinary-Income Clawback
Section 1245 governs depreciable personal property used in a trade or business. "Personal" here doesn't mean for personal use — it means anything that isn't real estate. The list is long:
- Machinery and equipment
- Vehicles (including heavy SUVs, trucks, and specialized work vehicles)
- Office furniture and fixtures
- Computers, servers, and other electronics
- Intangibles such as patents, copyrights, and amortizable Section 197 goodwill
- Single-purpose agricultural or horticultural structures
- Certain components of buildings that were separated out via cost segregation studies (5-, 7-, and 15-year property)
When you sell Section 1245 property at a gain, the rule is brutally simple: all depreciation previously taken is recaptured as ordinary income, up to the amount of your total gain. Any gain above the depreciation you claimed gets treated as Section 1231 gain, which generally flows to long-term capital gains rates if the asset was held more than a year.
A Section 1245 Example
You bought a CNC machine in 2021 for $200,000 and claimed 100% bonus depreciation, deducting the full $200,000 immediately. Your adjusted basis is now zero. In 2026, you sell it for $90,000.
- Sale price: $90,000
- Adjusted basis: $0
- Realized gain: $90,000
- Depreciation previously taken: $200,000
- Section 1245 ordinary-income recapture: lesser of gain ($90,000) or depreciation ($200,000) = $90,000
- Section 1231 (capital-gains) portion: $0
The entire $90,000 is ordinary income. None of it qualifies for long-term capital gains rates. If you're in the 32% federal bracket and live in California, the combined federal-and-state hit can easily approach 45%.
What If You Sell for More Than You Paid?
Now imagine instead the machine appreciates and you sell it for $250,000.
- Realized gain: $250,000
- Depreciation previously taken: $200,000
- Section 1245 ordinary-income recapture: $200,000
- Section 1231 capital-gain portion: $50,000
The depreciation-equivalent portion ($200,000) is ordinary; the appreciation above original cost ($50,000) is Section 1231 gain — long-term capital gains rates. This pattern is rare for equipment but common for collectibles, specialized rolling stock, or aircraft.
Section 1250: Real Property and the 25% Unrecaptured Gain
Section 1250 covers depreciable real property — buildings and their structural components. Land itself is not depreciable and not subject to recapture, but residential rentals, commercial buildings, warehouses, and structural components such as roofs, walls, HVAC, and plumbing fall under Section 1250.
Here's where the rules diverge from Section 1245 in a way that matters enormously for real estate investors.
True Section 1250 Recapture vs. Unrecaptured Section 1250 Gain
True Section 1250 recapture — taxed at ordinary income rates — only applies to depreciation taken in excess of straight-line. Because virtually all real property placed in service after 1986 must be depreciated using the straight-line method over 27.5 years (residential) or 39 years (nonresidential), true Section 1250 recapture is rare.
What does apply, almost always, is unrecaptured Section 1250 gain. This is the portion of your gain on a real-property sale that represents straight-line depreciation. It's treated as long-term capital gain but capped at a special maximum federal rate of 25% — higher than the 20% top rate on regular long-term capital gains, but lower than ordinary income rates.
A Section 1250 Example
You bought a small office building in 2010 for $1,000,000, allocating $800,000 to the building and $200,000 to land. Over 16 years, you've claimed roughly $328,000 of straight-line depreciation on the building. Your adjusted basis in the property is now $672,000. In 2026, you sell for $1,500,000.
- Sale price: $1,500,000
- Adjusted basis: $672,000
- Realized gain: $828,000
- Unrecaptured Section 1250 gain (capped at depreciation taken): $328,000 → taxed at up to 25%
- Section 1231 long-term capital gain: $500,000 → taxed at up to 20%
Compare that to the same gain treated as if it were all Section 1245 property: the entire $328,000 of depreciation would be ordinary income at up to 37%. The 25% cap is a real benefit of holding real property — but it's still a benefit you don't get on ordinary capital gains.
The Cost Segregation Trap
Investors increasingly run cost segregation studies on commercial and residential real property to break out components — appliances, carpeting, land improvements, specialty lighting, certain plumbing — that qualify as 5-, 7-, or 15-year property under Section 1245. Doing so accelerates depreciation, often unlocking 100% bonus depreciation on the segregated portion under current OBBBA rules.
The exit, however, is less fun than the entry. Those segregated components are now Section 1245 property for recapture purposes. When you sell the building, the gain attributable to those components recaptures as ordinary income, not at the 25% unrecaptured 1250 rate. The bigger the cost-seg study, the bigger the ordinary-income recapture at sale. Many investors model the upfront benefit without modeling the exit, and the all-in benefit is materially smaller than it looks.
This is also why the IRS scrutinizes cost segregation studies during exit-year audits. Proper allocation between Section 1245 components and Section 1250 building shell is no longer an academic question once you sign a sale contract.
Section 1231: The Friendly Middle Ground
Both Sections 1245 and 1250 operate as overrides to a more generous rule, Section 1231. Property used in a trade or business held more than one year generally enjoys "heads I win, tails you lose" treatment under Section 1231: net gains are long-term capital gains, but net losses are ordinary losses (fully deductible against ordinary income, not capped at $3,000).
Sections 1245 and 1250 carve out the depreciation portion of any gain and pull it back to ordinary (or 25%) rates. Whatever's left after the recapture haircut keeps its Section 1231 treatment.
The 1231 Lookback Rule
There's a sting in the tail. If you had net Section 1231 losses in any of the prior five years, the current year's net Section 1231 gain is recharacterized as ordinary income up to the amount of those unrecaptured losses. Investors who took big ordinary losses in a bad year and then sold winners later don't always realize the lookback applies. Check your last five Forms 4797 before assuming capital-gains treatment on a 2026 sale.
Form 4797: Where It All Lands on Your Return
Sales of business property aren't reported on Schedule D like personal investments. They go on Form 4797, which has four parts:
- Part I — Section 1231 property held more than one year. Net gains feed Schedule D; net losses are ordinary.
- Part II — Ordinary gains and losses, including property held one year or less and the ordinary-income portion of Section 1245/1250 recapture.
- Part III — Depreciation recapture computations under Sections 1245, 1250, 1252, 1254, and 1255. This is where you calculate the bridge from total gain to the ordinary-income chunk.
- Part IV — Recapture of Section 179 and listed-property depreciation when business use drops below 50%.
Part III is the workhorse. For each asset, you list the original cost, depreciation claimed, sale price, expenses of sale, and the gain. The form mechanically separates the recapture portion from the remaining Section 1231 gain and pushes each to the right part of your return.
Strategies to Manage the Recapture Hit
Recapture isn't optional, but its timing and amount are partially within your control.
1. Section 1031 Like-Kind Exchanges (Real Property Only)
A 1031 exchange lets you defer all gain — including depreciation recapture — when you swap one piece of real property held for productive use or investment for another of like kind. Since the 2017 TCJA, like-kind exchanges apply only to real estate; personal property exchanges are no longer eligible. For commercial and rental investors, 1031 remains the single most powerful tool for postponing the unrecaptured 1250 gain indefinitely, potentially until death wipes out the deferred liability via stepped-up basis.
2. Installment Sales
Spreading a gain over multiple years using the installment method (Form 6252) lowers the per-year tax bracket exposure on the Section 1231 portion. However, depreciation recapture income on Section 1245 property is taxed entirely in the year of sale, regardless of the installment structure. The installment method only defers the post-recapture Section 1231 gain.
3. Holding Period and Timing
Hold longer than a year to escape short-term ordinary treatment on the non-recapture portion. Time the sale into a low-income year if possible — recapture stacks on top of your other ordinary income and can push you into a higher bracket plus phase out QBI deductions, education credits, and Net Investment Income Tax (NIIT) thresholds.
4. Charitable Contribution of Appreciated Equipment
Donating Section 1245 property to a qualified charity generally results in a deduction equal to your adjusted basis (not fair market value) because of the recapture rules — usually disappointing. Real estate, by contrast, can often be donated at fair market value, with the donor sidestepping recapture entirely. The math heavily favors donating real property over equipment.
5. Section 121 Exclusion Doesn't Apply to Recapture
If your "business" property is also your personal residence (think a converted rental or a home office), the Section 121 exclusion of up to $250,000/$500,000 of gain on a primary-residence sale does not shelter the depreciation-recapture portion. Depreciation claimed after May 6, 1997 is taxed as unrecaptured Section 1250 gain at up to 25% even if the rest of the gain is excluded. Many homeowners with prior rental or home-office use are surprised at this carve-out.
Why Bookkeeping Quality Determines Your Recapture Bill
The numbers that matter on Form 4797 — original cost, accumulated depreciation, sale price, expenses of sale — all come from your books. Sloppy records mean either you understate the gain (and the IRS catches it on audit) or you overstate it (and overpay). Worse, the depreciation schedules need to break out Section 1245 versus Section 1250 components if you've ever run a cost segregation study, capitalized improvements, or replaced major components.
A few habits separate clean exits from painful ones:
- Maintain a fixed-asset register from day one. Each asset should have its in-service date, original cost, classification (Section 1245 or 1250), depreciation method, accumulated depreciation, and any Section 179 or bonus depreciation claimed.
- Preserve cost segregation study reports. When you sell, you'll need to allocate the sales price across the segregated components. Without the original study, you can't defend the allocation.
- Track partial dispositions and improvements separately. If you replaced a roof, the old roof's remaining basis can be written off — but only if it was tracked as a distinct asset.
- Reconcile depreciation between your books and your tax returns. Book and tax depreciation often diverge, and at sale time it's the tax accumulated depreciation that drives recapture.
Plain-text accounting tools make this kind of long-horizon recordkeeping particularly straightforward: every asset and every depreciation entry sits in a human-readable, version-controlled file that survives accountant changes, software migrations, and the decade-long holding periods typical of real estate.
Common Mistakes That Trigger IRS Adjustments
A few patterns show up repeatedly in audits of business-property sales:
- Failing to recapture Section 179 when business use falls below 50%. Triggers immediate ordinary-income recapture under Section 280F.
- Ignoring "allowed or allowable" depreciation. Even if you forgot to claim depreciation in a prior year, the IRS treats it as having been claimed for purposes of computing adjusted basis and recapture. You don't get the deduction, but you still pay the recapture.
- Miscategorizing a sale as a Schedule D capital transaction when the property was used in a trade or business — it belongs on Form 4797.
- Overlooking the 1231 lookback when prior-year losses recharacterize current gain as ordinary.
- Treating a partial-asset disposition as a full sale without basis tracking, leading to phantom gains or losses.
Keep Your Asset Records Clean Long Before You Sell
Depreciation recapture is settled at the moment of sale, but it's actually decided years earlier — in the quality of the books you keep while you own the asset. The owners who exit cleanly are the ones who tracked every depreciation election, every cost segregation component, every improvement, and every basis adjustment in a system they can still read and audit five or ten years later. Beancount.io provides plain-text accounting that gives you complete transparency and control over your fixed-asset registers and depreciation schedules — no proprietary database, no vendor lock-in, no scrambling for documentation at closing. Get started for free and see why developers, real estate investors, and finance professionals are switching to plain-text accounting for the long haul.
Sources used in researching this article include the IRS instructions for Form 4797, IRS Publication 544, and analysis from Thomson Reuters Tax & Accounting, EisnerAmper, and The Tax Adviser.