Cost segregation is one of those strategies that every real estate fund manager has heard about, but few fully understand at the fund level. Most of the content online explains it for individual investors. Buy a rental property, run a cost seg study, take a big first-year deduction.
At the fund level, it’s more nuanced. You’re not just maximizing one investor’s deduction. You’re making a portfolio-wide decision that affects every LP’s K-1, your fund’s cash flow projections, your depreciation recapture exposure at exit, and potentially how you pitch the fund to new investors.
We help fund managers evaluate and implement cost segregation across their portfolios. Here’s how it actually works when you’re running a fund.
Cost Segregation in 60 Seconds
A cost segregation study is performed by an engineering firm that analyzes a building and reclassifies its components into shorter depreciation categories.
Without cost segregation, the entire building (excluding land) depreciates over 27.5 years for residential property or 39 years for commercial property. That’s a slow, steady deduction.
With cost segregation, the engineering team identifies components that qualify for faster depreciation:
- 5-year property: Carpeting, appliances, certain light fixtures, specialized electrical, cabinetry
- 7-year property: Office furniture, certain equipment
- 15-year property: Land improvements like parking lots, sidewalks, landscaping, fencing, signage, and qualified improvement property (QIP)
Once reclassified, those components can be depreciated over their shorter lives. And with 100% bonus depreciation now permanent under the OBBBA for property acquired after January 19, 2025, those reclassified assets can be fully expensed in year one.
That’s where the tax benefit becomes significant.
Why Cost Segregation Is Different at the Fund Level
When an individual investor runs a cost seg study on a rental property, the math is straightforward. One property, one owner, one tax return.
At the fund level, several factors make the decision more complex.
The Deductions Flow Through to Multiple Investors
Your fund is a pass-through entity. Whatever depreciation the fund claims flows through to investors on their K-1s based on the partnership agreement’s allocation provisions.
That means the cost seg benefit isn’t yours to keep. It belongs to your LPs. And each LP’s ability to use the deduction depends on their individual tax situation.
An LP with $500,000 of passive income from other investments gets immediate tax savings. An LP with no other passive income may have the loss suspended under the passive activity rules, carrying it forward until the property is sold or they generate passive income to absorb it.
Before commissioning a study, understand your investor base. If most of your LPs are passive investors without significant other passive income, the immediate year-one benefit may be smaller than your projections suggest.
You’re Making a Portfolio Decision
Individual investors evaluate cost seg property by property. Fund managers should think at the portfolio level.
Say your fund owns four properties. Two are newly acquired multifamily buildings with strong cost seg potential. One is a stabilized office property you’ve held for three years. One is primarily a land deal with a small building.
The right approach isn’t necessarily to run cost seg on all four. It’s to evaluate each property’s potential, model the aggregate impact on investor K-1s, and decide which studies deliver the best return relative to their cost.
We’ve seen fund managers run cost seg on every acquisition by default. That’s not always optimal. A $600,000 property where the study reclassifies $40,000 into short-lived assets doesn’t justify the $6,000 study fee. A $15 million multifamily where the study reclassifies $3 million absolutely does.
The Timing Affects Your Fund’s Tax Story
Cost segregation generates large first-year deductions. For a fund that’s actively acquiring, this creates a pattern: big tax losses in acquisition years, followed by lower depreciation in subsequent years (because you’ve already expensed the short-lived assets).
This matters for how you communicate with LPs. If you promise “significant tax benefits” in your offering materials and then deliver a K-1 showing ordinary income in year three because all the accelerated depreciation was taken in year one, your LPs will have questions.
Be explicit in your investor reporting about how cost seg affects the depreciation schedule over time. Show LPs the expected depreciation profile for the fund, not just the year-one number.
The Numbers: What Cost Seg Actually Looks Like for a Fund
Let’s walk through a real-world scenario.
Your fund acquires a 120-unit multifamily property for $20 million. After subtracting $4 million for land value, you have $16 million in depreciable basis.
Without cost segregation: The entire $16 million depreciates over 27.5 years. Annual depreciation is approximately $582,000. In year one, each LP’s K-1 reflects their share of that deduction.
With cost segregation: The engineering study reclassifies $4.8 million (30% of the depreciable basis) into 5-year and 15-year property. With 100% bonus depreciation, that $4.8 million is fully expensed in year one.
Year-one depreciation jumps from $582,000 to approximately $5.2 million ($4.8 million bonus plus roughly $407,000 in regular depreciation on the remaining $11.2 million).
The difference: $4.6 million in additional first-year deductions flowing to your investors.
For a fund with $10 million in LP capital, that’s roughly $0.46 of additional deductions per dollar invested in year one. For an LP in the 37% bracket with passive income to offset, that translates to about $0.17 of federal tax savings per dollar invested, just from depreciation, in year one alone.
The cost seg study fee: Approximately $10,000 to $15,000 for a property of this size.
ROI of the study: The $15,000 fee generates $4.6 million in additional first-year deductions. That’s not a hard decision.
Anchor Investor Strategy: Using Cost Seg Across Multiple Funds
This is a fund-level strategy that most individual investor content never covers.
If you’re a GP with multiple active funds, you likely have anchor investors who are in several of your vehicles. Those anchor investors receive K-1s from each fund. Some funds may be generating taxable income (older funds with stabilized, cash-flowing properties). Others may be newly acquired and generating losses.
Cost segregation on properties in your newer fund can create tax losses that offset the income your anchor investors are receiving from older funds. The investor’s net passive income across all funds decreases, and their current-year tax bill drops.
This is powerful for LP retention. When an anchor investor sees that your newest fund’s depreciation benefits are reducing the tax hit from your older funds, that’s a tangible, quantifiable benefit that goes beyond IRR.
It’s also a compelling pitch for Fund II and Fund III raises. You can show prospective LPs exactly how the tax profile of a new fund complements their existing position.
Look-Back Studies: Capturing Missed Depreciation
If your fund owns properties that were acquired before the OBBBA restored 100% bonus depreciation, or properties that never had a cost seg study at all, you’re not out of luck.
A look-back cost segregation study can be performed on properties you’ve owned for years. The study identifies components that should have been in shorter depreciation categories from the beginning. Then, using Form 3115 (Application for Change in Accounting Method), you can take the cumulative missed depreciation as a single deduction in the current tax year.
No amended returns required. The entire catch-up hits in one year.
Here’s what makes this especially valuable for funds:
- Immediate K-1 impact. A look-back study on a property held for four years could generate a six-figure catch-up deduction that flows to LPs on this year’s K-1.
- No additional capital required. You’re not buying anything new. You’re extracting tax value from properties you already own.
- Portfolio sweep opportunity. Review every property in the fund. If two or three never had cost seg studies, the combined catch-up could be substantial.
We recommend reviewing the entire portfolio for look-back opportunities during your annual tax planning session. It’s one of the highest-ROI moves you can make for your LPs.
The Recapture Trade-Off
Every cost seg conversation needs to include depreciation recapture. We covered this in our bonus depreciation guide, but it’s worth repeating here because we see fund managers overlook it.
When the fund sells a property, a portion of the gain is taxed at the unrecaptured Section 1250 rate (up to 25%) to the extent of depreciation previously claimed. If you took $4.8 million in bonus depreciation via cost segregation, that’s $4.8 million of potential recapture at exit.
This doesn’t make cost seg a bad idea. The time value of money still favors taking the deduction now and paying recapture later. But the net benefit depends heavily on hold period.
Long hold (7+ years): Almost always a strong net benefit. The present value of the year-one tax savings exceeds the future recapture cost, especially when you account for the reinvestment value of the saved cash.
Medium hold (3-5 years): Still usually positive, but model it carefully. The shorter the hold, the less time value you capture.
Short hold (under 3 years): Marginal at best. The recapture comes so quickly that the net present value of the tax deferral may not justify the study cost, and your LPs get a K-1 with a large gain that includes recapture. Not the K-1 they were hoping for.
1031 exchange: If the fund plans to exchange into a replacement property, depreciation recapture is deferred along with the gain. This makes cost seg even more attractive for funds using a 1031 strategy.
Model the full lifecycle for each property before deciding. Your CPA should run the year-one benefit, the reduced depreciation in subsequent years, and the recapture at exit to show the true after-tax impact.
State Conformity Issues
Not every state follows federal bonus depreciation rules. This creates a mismatch for LPs in non-conforming states.
California is the biggest example. California requires a full addback of federal bonus depreciation on the state return. Your fund takes $4.8 million in bonus depreciation federally. Your California LPs add it all back on their state return and depreciate over the normal schedule.
For a fund with significant California LPs, the net benefit of cost segregation is lower than it appears on the federal side. It’s still a win (the federal benefit is real), but the state tax picture is different.
Other non-conforming or partially conforming states include New Jersey, New York, Pennsylvania, and several others. Your CPA should model the state impact for your specific investor base.
This is another reason to be precise in your K-1 preparation. State-level depreciation adjustments need to be reflected on the state K-1 equivalents, not just the federal K-1.
Who Performs the Study
A cost segregation study should be performed by an engineering firm with specific experience in cost segregation. This isn’t a CPA task. The engineers physically inspect the property (or review architectural drawings for new construction) and classify each component based on IRS guidelines.
What to look for in a cost seg provider:
- Engineering credentials. The study should be performed or supervised by a licensed professional engineer.
- Real estate specialization. A firm that focuses on cost segregation for real estate will classify components more aggressively (and correctly) than a generalist.
- IRS-defensible reports. The study should produce a detailed report with asset-by-asset classification, cost allocation methodology, and supporting documentation that would hold up in an audit.
- Property type experience. Multifamily, industrial, office, retail, and hospitality properties each have different component mixes. The firm should have experience with your property type.
Study fees typically range from $5,000 to $15,000 per property, depending on size and complexity. For larger or more complex properties, fees can run higher. Some firms offer volume pricing for funds commissioning studies on multiple properties simultaneously.
Your CPA coordinates with the cost seg firm to integrate the study results into the fund’s depreciation schedules and tax returns. This coordination is important. A study that sits in a drawer because nobody recorded the reclassifications is worth nothing.
How Cost Seg Affects Carried Interest
Here’s a nuance that GPs should understand. Cost segregation accelerates depreciation, which flows through to investors and the GP. But the GP’s carried interest is typically a profits interest, not a capital interest. The GP’s share of depreciation deductions depends on the allocation methodology in the partnership agreement.
In a target capital account framework, accelerated depreciation from cost seg can shift the allocation of losses toward LPs (since the goal is to align tax allocations with economic distributions). This can be beneficial because it concentrates the tax benefit where it has the most impact: with the investors who contributed capital.
But when the property is sold, the recapture creates gain that flows back through the waterfall. If the GP is in the promote tier at that point, a portion of the recapture gain gets allocated to the GP’s carried interest, taxed at 25% instead of the 20% long-term capital gains rate.
Model this before you commission a study. The GP’s share of recapture at exit is a real cost that reduces the after-tax value of the promote.
A Decision Framework for Fund Managers
When deciding whether to run cost segregation on a property in your fund, answer these questions:
- What’s the depreciable basis? Properties under $500,000 in depreciable basis rarely justify the study cost. Above $1 million, it almost always makes sense.
- What’s the expected reclassification percentage? Multifamily and hospitality properties typically reclassify 20-35%. Office and industrial may be 15-25%. Land-heavy deals could be under 10%.
- What’s the hold period? Longer holds = higher net benefit. Under three years, model it carefully.
- What’s your LP profile? If most LPs have passive income, the year-one benefit is immediate. If not, losses may be suspended.
- Are there look-back opportunities? Existing properties without prior cost seg studies may offer the best ROI through a Form 3115 catch-up.
- What’s the state conformity picture? If a significant portion of your LPs are in non-conforming states, the net benefit is lower.
- Does the fund plan to 1031 exchange? If yes, recapture is deferred, making cost seg even more attractive.
Cost Seg Is a Tool, Not a Default
The best fund managers treat cost segregation as a strategic tool, not an automatic checkbox. They evaluate each property on its merits, model the full lifecycle impact, communicate the tax profile honestly to LPs, and coordinate the study with their CPA and engineering firm to ensure the deductions are properly recorded and allocated.
Done right, cost segregation is one of the highest-ROI tax strategies available to real estate funds. Done carelessly, it overpromises in year one and disappoints at exit.
Want to evaluate cost segregation opportunities across your fund’s portfolio? Reach out to us and we’ll model the benefit for each property and show you the full picture.
