Greg's situation
Greg Sullivan, 58, is a regional sales director making $310K W-2. He bought a $720K furnished STR in Phoenix's Old Town Scottsdale in 2024. It's done well — average stay 4.5 nights, comfortable margins, satisfies the STR loophole. He materially participates. By any other measure he's a textbook YES candidate for cost seg.
But Greg is planning to sell in late 2027. He's eyeing retirement in 2028, plans to relocate to a small lake house in Wisconsin, and the Scottsdale property doesn't fit the post-retirement picture. He's holding ~18 more months.
His CPA mentioned cost segregation. Greg ran some numbers and walked into the meeting skeptical. The CPA's response was the right one: "If you 1031 exchange into something else, cost seg makes sense. If you just sell, recapture eats most of the benefit. Let's talk about which path you actually want."
What recapture is, in plain terms
When you depreciate a property, you reduce your tax basis. When you sell, the IRS taxes the depreciation you took as ordinary income — they "recapture" it. The rates depend on what type of property:
- §1245 recapture applies to tangible personal property (the 5-year and 7-year stuff cost seg reclassifies most of). Recaptured at ordinary income rates — up to 37% federal.
- §1250 recapture applies to real property (the 27.5- or 39-year shell). Capped at 25% federal.
Cost segregation accelerates depreciation by reclassifying components from the slow shell (§1250) into the faster personal-property buckets (§1245). When you sell, that same reclassification means you have MORE §1245 property to recapture at HIGHER rates than you would have had under straight-line.
Straight-line depreciation has a recapture advantage that cost seg gives up. If Greg had taken straight-line, all his recapture on sale would be §1250-capped at 25%. With cost seg, the reclassified components recapture at his marginal rate of 35%.
The math, worked — cost seg vs. no cost seg
| Scenario | With cost seg | Without cost seg |
|---|---|---|
| Year-1 deduction (2026) | $150,000 | $15,000 |
| Year-1 federal tax savings @ 35% | $52,500 | $5,250 |
| Years 2-3 additional depreciation | $10,000 | $30,000 |
| Total depreciation taken at sale | $160,000 | $45,000 |
| §1245 recapture at sale (ordinary 35%) | −$50,750 | $0 |
| §1250 recapture at sale (capped 25%) | −$700 | −$11,250 |
| Net tax benefit from depreciation strategy | $1,050 | $24,000 |
| Less: study fee | −$1,295 | $0 |
| Net AFTER recapture | −$245 | $24,000 |
This is the recapture trap. With cost seg, Greg captures $52,500 of year-1 tax savings — feels great in 2026. But 18 months later, $50,750 of that benefit gets clawed back when he sells. Net after recapture: he LOST $245 by doing the study compared to just taking straight-line.
And this is BEFORE the time-value-of-money working in his favor (he gets the $52K refund early and pays back $50K later, so there's some interest gain on that timing). Even with conservative assumptions on time value, Greg breaks roughly even on a 3-year hold. With a 2-year hold, he loses money. With a 1-year hold, he loses meaningfully more.
The two ways to defuse recapture
1. §1031 like-kind exchange
If Greg sells in 2027 AND uses the proceeds to buy a different investment property within 180 days under §1031, the recapture defers to the new property. He carries forward both the basis and the depreciation history. He doesn't pay tax on the recapture; it sits in the new property until he eventually sells THAT one. With careful planning over multiple 1031s, he can defer recapture indefinitely.
For Greg, this depends on whether he wants to keep investing in real estate post-retirement. If he wants out of real estate, 1031 doesn't help.
2. §1014 stepped-up basis on death
Sounds dark, but it's a real planning device. If Greg holds the property until death, his heirs receive a stepped-up basis at fair market value on the date of death. All accumulated depreciation (including cost seg recapture) is wiped out. Heirs sell with effectively zero embedded gain. This is the "buy-borrow-die" strategy used by long-term real estate investors. For Greg at 58 planning a 2028 retirement, this is decades away — but it's a real consideration if he ends up holding indefinitely.
The "I might hold longer" case
The math flips meaningfully on hold periods. Same Greg, same $720K property, same $150K year-one deduction:
- 2-year hold: Recapture eats the entire benefit + a small loss. Skip.
- 3-year hold (Greg's plan): Roughly break-even, loses $245 net. Skip.
- 5-year hold: Time-value of money on the upfront tax savings makes it positive. Worth doing if you'll definitely hold this long.
- 7-year hold: Cost seg is comfortably positive ($15-25K net benefit). Do it.
- 10+ year hold: Cost seg is strongly positive. Always do it for property over $300K.
The break-even hold period sits around 5 years for typical numbers. Below that, recapture wins. Above that, the time value of money on the upfront tax savings wins.
The decision tree
When the math STILL works for departing owners
- 1031 exchange. Defers recapture. Cost seg makes sense if you're rolling into another property.
- Hold until death. Stepped-up basis erases recapture. Long-horizon estate planning.
- Tax bracket DROPS in sale year. If Greg retires in 2028 and his sale-year income drops to a 22% bracket, recapture at lower rates may make the math positive. Rare but real.
- Massive net operating loss carrying forward. If you have prior losses that absorb the recapture, the recapture penalty effectively disappears. Edge case.
What Greg should actually do
Take straight-line depreciation. Skip the cost seg study. Save the $1,295 study fee. The time he'd save with cost seg recapture math doesn't justify the study cost on his planned 18-month hold. If his timeline shifts to 7+ years, revisit. If he decides to 1031 into a new property post-retirement (the lake house if it's a rental, or a different STR), revisit then — cost seg makes sense if he's deferring recapture into a long-hold replacement.
For low-cost cost seg studies under $500 if you're determined to do it anyway and accept the recapture math, see cheapcostseg.com. Same IRS-compliant methodology, lower price floor. Even cheaper studies don't fix the recapture math, but they shift the breakeven hold period from 5 years to about 4.
Two paths if you still want to do this
If you're selling soon, cost seg only makes sense if you (1) 1031 exchange into another property to defer recapture, or (2) realize you're holding for longer than you thought. Otherwise, take straight-line depreciation and skip the study.
Disclosure. This page is operated by Cost Seg Smart LLC. The "order a study" CTA routes to costsegsmart.com, the same operator. Numbers in the worked example are modeled from Cost Seg Smart's 2026 benchmarks dataset (n=260 studies). Your actual study will differ. Nothing on this page is tax, legal, or financial advice — consult a qualified CPA.