You bought the building, you expect to sell in two or three years, and a provider has told you a study is still a great idea. Sometimes that is true. Sometimes it is a $12,000 fee spent to move roughly $12,000 of tax around a calendar.
The honest answer takes arithmetic, not enthusiasm. Below is the framework we use, run at four hold periods so you can see where the line actually sits.
Key takeaways
- A short hold does not kill a study, but it shrinks the margin. The benefit is the present value of a deferral, and a deferral you unwind in 24 months is worth very little.
- Four variables decide it: hold period, your marginal rate today, your expected rate at sale, and your discount rate. Change one and the answer can flip.
- A two-year hold at a flat rate is usually a loser once the fee is counted. A five-year hold at the same rate is usually a clear winner.
- A short hold wins decisively when the exit does not trigger recapture, such as a 1031 exchange or a transfer at death with a stepped-up basis.
- A spike-income year changes everything. Deducting at 37% and recapturing at a lower rate is permanent money, not just timing.
The Four Variables That Actually Decide It
Strip away the sales language and this is a net present value problem with four inputs.
Hold period. Longer is better, and not linearly. The deferral compounds against your discount rate every year you keep the cash.
Your marginal rate today. The year-one benefit is the incremental deduction times the rate you would otherwise pay. A 37% bracket makes a study far more valuable than a 24% bracket.
Your expected rate at sale. Almost nobody models this. Reclassified 5-, 7-, and 15-year assets are §1245 property, and on sale, gain up to the depreciation taken returns as ordinary income at rates up to 37%. A lower rate at exit converts the deferral into permanent rate arbitrage. A higher rate can cost you. The exit mechanics are covered in full in our guide to depreciation recapture after a cost segregation study.
Your discount rate. If you redeploy capital into deals returning 15%, deferral is valuable. If it sits in a money market, less so. Use your real opportunity cost.
The Break-Even Math, Run at Four Hold Periods
Example: a $2.5M multi-tenant office building with a $2,000,000 depreciable basis Land allocated at $500,000. This is not a plain office shell. It is a heavily built-out multi-tenant asset with extensive tenant millwork and casework, dedicated electrical for tenant equipment, supplemental cooling, decorative lighting, and a large parking lot with site utilities and landscaping. A study reclassifies 25% of basis, or $500,000, into 5-, 7-, and 15-year property, all bonus-eligible at 100%. Study fee $12,000. Marginal rate 37% today and at sale. Discount rate 8%.
A generic office shell reclassifies closer to 10% to 18%, and at that level every number below shrinks roughly proportionally. Twenty-five percent is what a specific buildout supports, not a default.
Year one, the study yields $487,179 of incremental deduction, worth $180,256 of deferred tax. That is the $500,000 write-off less the $12,821 of 39-year depreciation the same basis would have produced anyway, shown as a full year for simplicity; the mid-month convention makes the real first-year offset smaller and the incremental figure slightly larger. Each later year you give back about $4,744, because that basis is gone from the schedule. At sale, the §1245 recapture bill lands.
| Hold period | PV of year-1 benefit | PV of give-back | PV of exit recapture | Study fee | Net present value |
|---|---|---|---|---|---|
| 1 year | $180,256 | $0 | $181,795 | $12,000 | −$13,538 |
| 3 years | $180,256 | $8,459 | $150,364 | $12,000 | +$9,433 |
| 5 years | $180,256 | $15,711 | $124,201 | $12,000 | +$28,344 |
| 10 years | $180,256 | $29,633 | $76,512 | $12,000 | +$62,111 |
At a two-year hold, the net present value is roughly −$1,500. Break-even for this building, at these assumptions, sits between two and three years.
Now move one variable. Hold three years but expect 32% at sale instead of 37%, and NPV rises to about +$30,900. Hold three years and exit through a 1031 exchange, triggering no recapture, and it jumps to roughly +$159,800. Nothing in this table is sensitive to engineering; it is sensitive to the discount rate and the exit rate you pick, so run it at your own opportunity cost before you decide.
When a Short Hold Still Wins
Four situations turn a marginal study into an obvious yes.
You are having a spike-income year. A business sale, a large one-time event, or an unusually profitable year puts you in the top bracket now, with lower rates expected later. The gap between the deduction rate and the recapture rate is permanent.
Your exit is a 1031 exchange. A properly executed exchange defers recapture along with the gain, so the exit column above approaches zero and even a two-year hold pencils. The interaction is subtler than it sounds; see cost segregation and 1031 exchanges.
The likely exit is death, not sale. If the owner is elderly and the property will pass to heirs, §1014 generally gives them a basis equal to fair market value at death, and the accumulated depreciation is never recaptured. Our article on the step-up in basis covers how far that reasoning goes.
The deduction unlocks a one-time event. Sometimes the point is not the building. It is offsetting a defined slug of income in a single year, and the property is the vehicle.
When It Loses, and Why Some Providers Will Not Say So
Here is the case nobody in this industry likes to put in writing.
A two-year hold, a flat rate before and after, no exchange, no estate strategy, and a $12,000 fee on a $2M basis. That study destroys value. You pay to accelerate a deduction you hand back before time value accumulates, and you convert future 25% unrecaptured §1250 gain into 37% ordinary §1245 recapture on the reclassified portion.
Three related failure modes: you cannot use the deduction this year because passive loss rules suspend it, so the year-one benefit is a paper number; your rate rises between now and the sale; or the depreciable basis is below roughly $500,000, where the fee starts consuming the benefit at any hold period. Our guide to whether cost segregation is worth it covers that threshold.
Every seller who calls a cost segregation firm gets told yes by somebody. The correct answer is sometimes no. So ask for the net present value, not the deduction. Any firm can quote a first-year deduction. Ask for modeled NPV at your actual hold period, your actual rate, an assumed rate at sale, and a discount rate you choose. If they cannot produce that in a day, they are selling, not engineering. Then confirm the filing path, which our guide to when to order a study walks through.
Frequently Asked Questions
Can I do a study in the same year I sell?
Mechanically yes, economically almost never. The deduction and the recapture land on the same return, so there is no deferral at all. Only a character or rate difference remains, and it is rarely enough to cover the fee.
Does recapture wipe out the entire benefit?
No, but it takes a real bite. Recapture on §1245 assets is ordinary income at rates up to 37%, against a maximum 25% rate on unrecaptured §1250 gain from building depreciation. What survives is the time value of the deferral plus any rate difference between the deduction year and the sale year.
What if my sale falls through?
Then you own a property with an accelerated schedule and a longer hold than planned, which improves every number in the table. A study modeled on three years that turns into eight gets better, not worse.
Find Out in 24 Hours Whether a Study Pays for Itself
Not every property justifies a study, and we will tell you when yours doesn't. Send Precision Cost Segregation the address, purchase price, closing date, and your rough tax rate, and we will come back with a modeled reclassification range and an estimated first-year benefit at no cost.
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.