"Doesn't the IRS just take it all back when I sell?" The sharpest objection to cost segregation, and most providers answer it by changing the subject. The honest answer: a meaningful portion does come back, at a higher rate than you would otherwise pay, and the strategy is still right for most owners. Both halves are true, and you deserve the arithmetic.
The short answer
- Reclassified 5- and 7-year assets are §1245 property. On sale, gain up to the depreciation taken recaptures as ordinary income, at rates up to 37%. Land improvements follow their own rules.
- The building structure is §1250 property. Unrecaptured §1250 gain is taxed at a maximum 25%.
- There is a real rate differential. A study moves dollars from the 25% bucket into the ordinary bucket, and that cost belongs in the decision.
- The benefit is time value plus optionality. You use the deferred tax for years, and three exits shrink or eliminate the recapture.
- A short hold plus a higher rate at sale than at purchase is where the math actually loses.
What Recapture Actually Is, Precisely
Depreciation reduces your basis, a lower basis means more gain on sale, and the code cares about how that gain arose.
The assets a study pulls out of the shell are §1245 property: gain up to the depreciation taken on them recaptures as ordinary income, so top exposure is 37%. The structure remaining on 27.5 or 39 years is §1250 property, producing unrecaptured §1250 gain capped at 25%. Appreciation beyond depreciation is generally long-term capital gain.
Two things people get wrong. Recapture is not a penalty layered on your gain; it is a characterization rule deciding which rate applies to gain you already have. And it only bites to the extent you have gain: sell below adjusted basis and there is nothing to recapture.
The Rate Differential Nobody Should Hide
Cost segregation makes one trade: deductions earlier, at your ordinary rate, in exchange for part of your gain taxed at ordinary rates instead of 25%. If your rate at sale is 37% and the alternative was 25%, the differential is 12 points, roughly $30,000 on $250,000 of extra depreciation. That is the real cost. Anyone calling recapture "not a concern" is either not looking at the numbers or hoping you will not.
The Worked Example: $300,000 Accelerated, Seven-Year Hold
Example: a study moves $300,000 into 5- and 15-year property Without the study, that $300,000 sits inside the 39-year shell at $7,692 per year. With the study and 100% bonus, it is deducted entirely in year one. Assume a 37% ordinary rate, a 25% unrecaptured §1250 rate, an 8% discount rate, and a sale at the end of year seven. The 37% applied to the whole $300,000 is a deliberate upper bound; the paragraph after the table explains why.
| Amount | Timing | Present value at 8% | |
|---|---|---|---|
| Tax saved on the accelerated deduction | +$108,154 | Year 1 | +$108,154 |
| Depreciation given up, years 2 through 7 | −$2,846 per year | Years 2–7 | −$13,157 |
| §1245 recapture on $300,000 at 37% | −$111,000 | Sale | |
| Less §1250 tax you would have paid anyway | +$13,462 | Sale | |
| Net additional tax at sale | −$97,538 | Sale | −$61,466 |
| Net present value of doing the study | +$33,531 |
Against a fee in the $5,000 to $15,000 range, the strategy clears. Note what the table does not claim: the $97,538 does not disappear. It gets paid, and costs $61,466 in today's dollars because you had six years of use of the money. Your result depends on your tax rate and whether you can use passive losses.
Now the caveat on that 37% line. The $300,000 bucket holds two different animals. Genuine §1245 personal property, the cabinetry, carpet, decorative lighting, dedicated electrical, recaptures as ordinary income up to the depreciation taken. 15-year land improvements do not. Depreciated on 150% declining balance, only the excess over straight-line carries §1245-style recapture, and treatment depends on the asset. Applying 37% across the whole bucket deliberately overstates the exit cost, so the case must win against the worst realistic reading. In your own model, put land improvements on their own line. See §1245 versus §1250 property.
The Case Where the Math Loses
Change two assumptions. You are in a 24% bracket in the study year, you sell at the end of year two, and by then your income has risen into the top bracket.
| Amount | Present value at 8% | |
|---|---|---|
| Year-one tax saved at 24% | +$70,154 | +$70,154 |
| Depreciation given up in year 2 | −$1,846 | −$1,709 |
| §1245 recapture at 37%, less §1250 tax avoided | −$107,154 | −$99,217 |
| Net present value | −$30,772 |
You deducted at 24% and recaptured at 37%, with barely two years of deferral to pay for the difference. A fee makes it worse. This is what happens when someone studies a property they are about to flip, covered in cost segregation when you are selling soon.
Three Exits That Change the Calculus Entirely
The seven-year example assumes the worst realistic exit, a straight taxable sale. Most experienced owners do not.
A §1031 exchange defers most of the recapture, not all of it. Since 2017, §1031 reaches real property only. Land improvements and structural components qualify, so their exposure carries into the replacement property. Genuine tangible personal property a study identifies, appliances, carpet, furnishings, cabinetry, is not exchangeable, and disposing of it can trigger ordinary recapture in the exchange year. Boot and net debt relief do the same. Sort which reclassified dollars are real property before the relinquished property closes, as cost segregation and 1031 exchanges sets out.
Death eliminates it. Under §1014, heirs take a stepped-up basis at date-of-death value and accumulated depreciation is never recaptured. For an owner holding into their estate, a study turns deferral into a permanent benefit, the mechanism behind the step-up in basis argument.
Your bracket at sale may not be your bracket today. Owners often deduct in peak earning years and sell after retiring, or into a year with suspended losses releasing. The differential narrows or reverses, and the arbitrage turns permanent.
The Honest Part: When to Skip It
Skip the study if you are selling within roughly two years in a taxable sale and expect your rate at sale to be higher than today's. The window is too short to pay for the rate differential and the fee. That is the clearest no in this field.
Be cautious in two adjacent cases. If the deduction sits suspended with no passive income to absorb it, you paid for a benefit you cannot use while the recapture still waits. And if the reclassification is modest, the fee, roughly $2,500 to $6,500 for small residential and $5,000 to $15,000 for most commercial, can consume the advantage.
Everywhere else, and that covers most owners, the trade is favorable: long hold, exchange planned, estate plan in place, or a stable-to-declining rate at exit. Our broader test for whether cost segregation is worth it walks the go/no-go.
Frequently Asked Questions
Do I owe recapture if I sell at a loss?
Recapture applies only to the extent you have gain. If the price is below your adjusted basis there is nothing to recapture. Remember that adjusted basis is cost reduced by all depreciation taken, so a loss against your purchase price is not necessarily a tax loss.
Could I avoid recapture by not taking the depreciation?
No. Basis is reduced by depreciation allowed or allowable, meaning you are treated as having taken it whether or not you claimed it. Declining to depreciate surrenders the deduction and keeps the basis reduction, the worst available outcome.
Does 100% bonus depreciation make recapture worse?
It makes it arrive faster and larger, because the entire short-life amount is deducted in year one. Total recapture is still capped at the depreciation taken, so bonus does not raise the ceiling. It concentrates the timing on both sides of the trade.
See What Your Property Would Yield
Every building is different, and the only way to know your number is to look at your building. Precision Cost Segregation provides a no-cost feasibility analysis: send us the property address, purchase price, closing date, and any improvements, and we'll model your likely reclassification and first-year benefit before you commit to anything.
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This article is provided by Precision Cost Segregation for general educational purposes and does not constitute tax, legal, or accounting advice. Tax outcomes depend on your specific facts, your tax rate, your passive activity position, and your entity structure. Figures shown are illustrative. Consult your CPA or tax advisor before acting, and engage a qualified professional to perform any cost segregation study. Information is current as of publication.
This article is general information, not tax or legal advice. Depreciation outcomes depend on your facts, elections, and current law — consult your CPA before acting. © 2026 Precision Cost Segregation.