Franchise Cost Segregation Studies: The Depreciation Math Most Operators Skip

A cost segregation study is not a tax loophole. It is an accounting correction, and most franchise operators never file for it, because nobody at the closing table mentions it exists. The correction is worth six figures on a single build-out, and the rules that make it worth ordering changed for the better in 2025, which is exactly when most franchise systems stopped paying attention to depreciation altogether.

Here's what a franchise cost segregation study actually does, why the 2025 tax law rewrite changed the payoff, and where the math still doesn't justify the fee.

What a franchise cost segregation study actually does

When a franchisee builds out a new unit, the IRS's default assumption is that the entire cost (the building shell, the walk-in cooler, the drive-through lane, the parking lot lighting) depreciates on one schedule: 39 years for nonresidential real property, 27.5 for some formats. That default is wrong for most of what goes into a franchise unit, and it costs operators money every year they leave it uncorrected.

A cost segregation study is an engineering-based review that reclassifies parts of a build-out into shorter recovery periods, typically 5, 7, or 15 years, based on how the IRS actually treats specific asset classes. Kitchen equipment, decorative millwork, specialty electrical and plumbing tied to equipment, and site improvements like signage and parking lot paving all qualify for faster depreciation than the shell they sit inside. A study run by a qualified engineering firm typically reclassifies 20 to 35 percent of total building cost into these shorter categories, with some formats reaching 40 percent.

Why the math changed in 2025

Cost segregation existed long before 2025. What changed is how much of that reclassified cost an operator can deduct in year one. Bonus depreciation, the provision that lets a business write off a set percentage of qualifying property immediately instead of spreading it over its recovery period, had been phasing down since 2023 and was on track to hit 40 percent for property placed in service in 2025.

The One Big Beautiful Bill Act, signed in July 2025, reversed that phase-down and made 100 percent bonus depreciation permanent for qualifying property placed in service after January 19, 2025. Section 179 expensing limits moved at the same time, up to 2.5 million dollars with phaseouts starting at 4 million. For a franchise operator opening a unit this year, that combination means the 20 to 35 percent of build-out cost a cost segregation study identifies is no longer spread across five or seven years. It is deductible against this year's income, in full, the year the unit opens.

What qualifies inside a franchise build-out

The categories worth knowing before ordering a study are the ones a general contractor's invoice never separates from the shell. Interior finishes tied to the brand's specific format, like decorative wall systems, custom millwork, and branded flooring, typically fall into 5 or 7-year property. Kitchen equipment, walk-in refrigeration, exhaust hoods, and the specialty electrical and plumbing that feed them follow the same shorter schedule. Site work (parking lot paving, exterior signage, landscaping) usually lands in the 15-year category rather than the 39-year one that governs the building itself.

A franchise system with a standardized prototype has an advantage here that an independent restaurant doesn't: the build-out is repeatable. Once an engineering firm completes a study on one unit, that study's percentage breakdown becomes a reliable template for the next ten units of the same prototype, which is why multi-unit operators tend to see these studies pay for themselves faster than single-unit owners do.

The savings, run against a real unit

On a build-out costing 1.2 million dollars, a study that reclassifies 30 percent of that cost (360,000 dollars) into shorter recovery periods now moves the full amount into year-one deductions under 100 percent bonus depreciation. At a blended federal and state tax rate near 30 percent, that is roughly 108,000 dollars in cash tax savings in the unit's first year, money that would otherwise sit spread across a 39-year schedule in increments too small to matter. Studies on properties valued at 1 million dollars or more commonly produce first-year savings between 40,000 and 200,000 dollars, depending on the building type and how equipment-heavy the format is.

The study itself runs a few thousand dollars for a smaller unit up to the low five figures for a full engineering field study on a larger location. Against six figures in accelerated deductions, the fee is rarely the reason to skip it.

Where the strategy doesn't pay off

None of this means every unit should order a study. A franchisee leasing a small footprint with a light build-out, a kiosk or a shared-space format under 200,000 dollars in improvements, often doesn't generate enough reclassified cost to justify an engineering-grade study. A lower-cost desktop analysis may be the better fit, or the exercise may not be worth ordering at all.

The bigger miss is timing. Bonus depreciation and cost segregation are tools for offsetting income an operator actually has. A franchisee losing money in year one from ramp costs has no tax bill to shrink, and the accelerated deduction either creates a net operating loss to carry forward or reduces the ceiling on future-year credits without helping cash flow today. This is worth running by a CPA before the equipment order, not after the unit opens, because the study only helps against income that already exists.

What to have ready before you order the study

An engineering-based cost segregation study needs the build-out's itemized cost detail, not just the total: the general contractor's schedule of values, equipment invoices, and any change orders that shifted scope after the original budget. Franchise systems that keep this documentation centralized across units, rather than scattered across individual franchisee files, hand engineering firms a cleaner starting point and a faster turnaround.

That kind of operational data hygiene is what Revscale's franchise intelligence tools are built to keep current across a growing network, so a CFO isn't reconstructing a build-out's paper trail from a five-year-old email thread when the next study comes up.

Franchise cost segregation isn't a strategy every unit needs, but for a build-out north of half a million dollars opening this year, the fee to find out is small against what a 39-year default schedule quietly leaves on the table.