What Happens to a Cost Segregation Study When You Sell

Three things happen at the same time

A sale after a cost segregation study is not one tax event, it is three running at once. First, gain tied to the personal property the study identified gets recaptured at ordinary income rates. Second, gain tied to the building's real property depreciation is taxed as unrecaptured section 1250 gain, at a rate capped at 25%. Third, any passive losses that built up and went unused during the years the property was held generally release in a full taxable sale. None of this is unique to a property that had a study, it is how depreciation recapture works on any depreciated property. A study changes how much basis sits in each bucket, which changes how the recapture math splits out.

Section 1245 property: the 5- and 7-year buckets

The personal property a cost segregation study identifies, carpet, cabinetry, decorative lighting, certain electrical and plumbing serving specific equipment, is section 1245 property. See 5-, 7-, and 15-year property examples for the full list. When the property sells, the gain attributable to the depreciation taken on that 1245 property (including any bonus depreciation claimed) is recaptured as ordinary income, not capital gain. This applies whether or not a study was ever done. A study simply moves more of the building's basis into this category earlier, in exchange for pulling those deductions into year one instead of spreading them across 39 or 27.5 years.

The mechanical point worth sitting with: a building that never had a study still has 1245 property buried inside its general basis, plumbing fixtures, decorative elements, and equipment that were always personal property under the tax code. It just was not identified or accelerated. A study does not manufacture recapture exposure that would not otherwise exist, it makes visible and speeds up depreciation that the building already qualified for.

Unrecaptured section 1250 gain: the building shell

The parts of the building that stay on the 39-year (commercial) or 27.5-year (residential rental) schedule, see what stays on the 39-year schedule, produce a different kind of gain on sale: unrecaptured section 1250 gain. That gain is taxed at a rate capped at 25%, higher than typical long-term capital gains rates but lower than the ordinary rates applied to 1245 recapture. This bucket exists regardless of whether a study was done, since straight-line depreciation on real property always produces it when a building sells above its depreciated basis.

Where the 15-year land improvement bucket lands

Paving, fencing, landscaping, and site lighting, the 15-year site improvement bucket, sit in a zone that is not as clean-cut as the other two. Whether a specific land improvement is treated as 1245 property or as real property for recapture purposes depends on the asset and how it functions on the property, and that classification is a question your CPA resolves at the time of sale based on the specific facts, not something the original study locks in permanently.

A worked structural example

Take a real engineered study: an office and warehouse property with a $1,911,675 building basis that produced $330,674 in first-year deductions on a $9,900 fee. That $330,674 sat across several buckets, the 5- and 7-year personal property, the 15-year site improvements, and any bonus taken on top. If that property sold years later above its depreciated basis, the gain would split the same way the depreciation did going in: the portion tied to the personal property recaptures as ordinary income, the portion tied to the straight-line shell becomes unrecaptured 1250 gain capped at 25%, and the site improvement portion falls into whichever of those two categories its specific assets fit. The math runs in reverse, but it runs through the same buckets a study built in the first place.

Suspended passive losses come home

Rental losses are passive by default under section 469 and can only offset passive income while the property is held, so many owners carry suspended losses forward year after year without using them. A full taxable sale of the activity generally releases those suspended losses, which can offset part of the recapture income landing in the same tax year. Whether that release fully, partly, or barely offsets a given sale's recapture depends on how large the suspended balance is against how large the recapture is, a calculation for your CPA.

An owner who materially participates in the property, or who qualifies for the short-term rental exception described in the passive activity rules, may never have built up a meaningful suspended balance in the first place, since the losses were treated as non-passive and used against other income as they occurred. In that case there is simply less of this particular offset waiting at the sale, not because anything went wrong, but because the losses were already put to work along the way.

Why the picture still isn't a wash

Recapture does not erase the value of deductions taken years earlier. A dollar deducted in year one is worth more than the same dollar deducted in year twenty, because of time value and because the money freed up in year one could be redeployed in the meantime. See depreciation recapture tax rates for the specific rate mechanics, and cost segregation and 1031 exchanges for how a like-kind exchange can defer this recapture rather than trigger it. The full mechanics of recapture, independent of cost segregation, are also covered at /blog/depreciation-recapture.

How favorable the full picture looks for a given property depends heavily on how long it was held before the sale. See does cost segregation hurt you when you sell for the honest math on where that timing advantage stays strong and where it genuinely narrows, and selling within three years for the specific short-hold version of that question.

Frequently asked questions

Does recapture cancel out the deductions a cost segregation study produced?

No, recapture taxes the gain attributable to depreciation already taken, it does not reverse the deductions themselves. The deductions already reduced taxable income in the years they were claimed; recapture is a separate calculation at sale.

Is all of the gain on a sale taxed at ordinary rates?

No. Gain tied to 5- and 7-year personal property is ordinary (section 1245). Gain tied to the building's straight-line real property depreciation is unrecaptured section 1250 gain, capped at 25%, a different and generally lower rate than ordinary income.

What happens if I never sell the property?

Recapture is triggered by a sale or other taxable disposition. A property held indefinitely, or passed to heirs, does not trigger the recapture calculation the same way a sale does; the mechanics differ and are a question for your CPA and estate planning advisor.

Does a 1031 exchange stop recapture entirely?

A 1031 exchange defers recapture along with the rest of the gain when the replacement property rules are met, it does not eliminate it. See cost segregation and 1031 exchanges for how the deferral mechanics work.

What if my suspended passive losses are bigger than my recapture?

Suspended losses generally release in a full taxable sale and can offset other income in that year, but whether they exceed, match, or fall short of a specific sale's recapture depends on the numbers on that return, which your CPA calculates.