Four-Wall EBITDA, New-Unit Returns and Payback

Introduction

A store chain grows by repeating itself. Each new store or restaurant is a separate investment decision: spend a known amount to build a box, then earn a stream of profit from it for a decade or more. Whether the chain should keep opening units comes down to three numbers: what the unit earns inside its own walls, what it cost to open and how quickly the first pays back the second. Together they are the chain's unit economics, and they decide how much a unit growth story is worth.

The investment is substantial. Texas Roadhouse put its average capital investment for a new Texas Roadhouse restaurant at about $8.3 million in 2025, up from $8.0 million, mainly because of higher rent and building costs; the figure includes an estimate of pre-opening expense and, for leased sites, a factor of ten times the initial base rent, according to Texas Roadhouse's Form 10-K. This article explains how unit-level profit is measured, how new-unit returns and payback are calculated, how maturity curves and cohorts show whether new units are working, and how pre-opening costs and impairments affect reported EBITDA.

Four-Wall EBITDA

The earnings of a single store or restaurant before interest, taxes, depreciation and amortization, counting only the revenue and costs that occur inside the location: cost of goods, store labor, occupancy and other store operating costs. It excludes corporate overhead, regional management and pre-opening costs, so it measures what the unit itself earns.

The name describes the boundary: everything that happens inside the four walls counts, and everything outside does not. Restaurants report the same idea as restaurant-level profit or restaurant-level margin. CAVA Group, for example, defines CAVA Restaurant-Level Profit as revenue less food, beverage and packaging, labor, occupancy and other operating expenses, excluding depreciation and amortization, and states that it excludes pre-opening costs. It reported $285.0 million of restaurant-level profit in fiscal 2025, a 24.4% margin, down from 25.0% the year before, according to CAVA's Form 10-K.

A simple unit P&L shows what sits where:

Starting from average unit volume, explained in sales per square foot and average unit volume, the four-wall margin turns a unit's sales into the cash it generates for the company.

Rent and the occupancy line

Rent is the line that most distorts comparisons. A chain that owns its buildings shows no rent and a higher four-wall margin than one that leases identical sites, even though the owner has tied up far more capital. Bankers compare chains on a rent-adjusted basis, adding rent back to reach a unit-level EBITDAR, or adjust the investment to include the value of the lease, as Texas Roadhouse does with its ten-times-rent factor. The Valuation guide's retail and consumer valuation primer explains why EBITDAR is the standard measure across lease-heavy businesses.

Lease terms shape the occupancy line as well. Many leases include percentage rent, an extra payment once a store's sales pass a set level, so occupancy cost rises with success. Tenants also pay a share of the landlord's common area maintenance, taxes and insurance, which can grow faster than base rent. And accounting spreads fixed rent increases evenly over the lease term, so the rent expense in a unit's P&L can differ from the cash paid in any year; bankers usually look at cash rent when judging a unit's payback.

From four-wall to company EBITDA

Four-wall EBITDA always exceeds company EBITDA, because the company must also pay for head-office costs: buying, marketing, technology, regional managers and executives. The gap matters in diligence. A chain whose units earn 20% four-wall margins but whose overhead absorbs 10% of sales has much less room than one whose overhead is 5%. As a chain grows, overhead usually falls as a share of sales, which is part of the case for unit growth.

Where to draw the line is a judgment each company makes, and the choices are not always consistent. Some chains charge credit card fees, delivery commissions and distribution costs to the unit; others keep them at the center. Some allocate a share of marketing to each location. Before comparing two chains' four-wall margins, bankers line up which costs sit inside the walls, because a few points of allocated costs can make one chain's units look better than another's without any real difference in performance.

The second half of the calculation is what the unit cost to open. The net investment includes construction or build-out, fixtures and equipment, opening inventory net of supplier credit and pre-opening costs, less any tenant improvement allowance a landlord pays toward the build-out.

The site itself changes the bill. A second-generation site, such as a former restaurant with a kitchen already in place, can cost far less to open than a new building on bare land, while a site with an attached drive-through lane or a large footprint costs more. Some sites require key money, a payment to the outgoing tenant or landlord to secure the lease. Chains therefore report an average investment across a class of openings, and bankers look at the range as well as the average.

Cash-on-Cash Return

A unit's annual four-wall EBITDA divided by the net cash invested to open it. A unit earning $600,000 a year on a $1.5 million investment has a 40% cash-on-cash return. Payback, the inverse, is the number of years of four-wall EBITDA needed to recover the investment: 2.5 years in this case.

A new-unit model puts these pieces together in a fixed order, and most chains present theirs to investors in roughly this form.

Why unit returns are so sensitive

Because much of a unit's cost is fixed costs such as rent, management salaries and minimum staffing, a shortfall in sales hits margin as well as volume. This unit-level operating leverage works in both directions: a unit that beats plan earns a disproportionately higher return.

Leased versus owned sites

Owning a site raises the upfront investment and lowers the four-wall cost, while leasing does the reverse. Chains sometimes build on owned land and then sell the property to an investor and lease it back, recovering most of the capital while keeping the unit. That improves cash-on-cash returns on paper, but replaces an asset with a long rent obligation, a trade-off covered in sale-leasebacks in consumer deals: value or trap. Bankers compare unit returns on a consistent lease-adjusted investment so that owned and leased units can be ranked together.

Between the two sit hybrid structures. Under a ground lease, the chain rents the land but builds and owns the building, so it carries the construction cost but pays lower rent. Under a build-to-suit arrangement, a developer builds the unit to the chain's specification and leases it to the chain, which keeps the chain's investment low but sets rent at a level that repays the developer. Each structure shifts cost between the upfront investment and the occupancy line, which is why the same restaurant concept can show different cash-on-cash returns in different markets.

What good looks like over a unit's life

There is no single benchmark, because formats differ. As a rough guide, chains with strong unit economics tend to show cash-on-cash returns well above their cost of capital and paybacks of around two to four years, with mature four-wall margins high enough to absorb a weaker unit. Paybacks much beyond five years leave little margin for error, since a unit's lease, its neighborhood and its competition can all change before the investment is recovered.

Payback also ignores what happens after the investment is recovered. A fuller view projects the unit's cash flows over its lease term, including the remodel it will need after several years and the maintenance spending each year, and calculates an internal rate of return. Two units with the same payback can have very different lifetime returns if one sits on a ten-year lease with no renewal option and the other on a twenty-year lease with renewals. Bankers use payback as the headline and unit IRR to check that the headline holds over the life of the site.

A new unit rarely opens at its mature level, so the first years of a unit's life are judged against a curve rather than a single number. Texas Roadhouse notes that new restaurants generally take several months to reach planned operating levels due to start-up inefficiencies, and CAVA notes that it typically incurs higher labor following an opening because of training costs.

Maturity Curve

The path a new unit's sales and margins follow from opening to maturity, usually shown as each year's sales as a percentage of a mature unit's. Some formats ramp up over several years as awareness builds; others open strongly and settle lower once the novelty fades.

Bankers study maturity curves through cohorts or vintages: grouping units by opening year and tracking each group's sales and margins over time. A cohort table shows whether newer classes are performing like older ones at the same age.

*Sales as a percentage of the mature-unit average.*

Reading a cohort table

The table reads down each column: each year's class is compared with earlier classes at the same age. In the illustration, every new class opens weaker than the one before and has not caught up by year two or three, a sign that the chain is running out of strong sites or entering weaker markets. Real filings show the same concern: Floor & Decor said its more recent new store classes are experiencing lower first year sales and initial returns than stores opened before 2022, which it linked to elevated interest rates, higher home prices and rising construction costs, according to Floor & Decor's Form 10-K.

Cohorts also explain comparable sales. A chain with many young units ramping up posts higher comps than its mature units alone would, a vintage effect explained in comparable sales: how same-store sales work.

Building the curve into the model

In a financial model, new units enter through the curve. A unit opened halfway through the year contributes only a partial year of sales, then follows the ramp percentages until it reaches mature volume, while its margin starts below the mature level and climbs as start-up costs fade. Getting the opening cadence right matters: a chain that opens most units in the fourth quarter shows little benefit in that year's sales but carries the pre-opening costs, so its EBITDA can fall even as the fleet grows. Bankers build each year's class separately, which keeps the model honest when the ramp assumptions change.

Why newer classes disappoint

When new classes fall short, the causes are usually a mix of:

How whitespace estimates are built and challenged is covered in store rollout models and whitespace analysis.

Opening a unit costs money before it makes any: hiring and training staff, rent during construction, opening marketing and travel. These pre-opening costs are expensed as incurred rather than capitalized, so a fast-growing chain's reported EBITDA is depressed by the cost of units that are not yet open. Floor & Decor says most of its pre-opening expenses are incurred in the three months before a store opens and are included in selling, general and administrative expenses. CAVA's pre-opening costs rose to $19.1 million in fiscal 2025 from $12.2 million, as it opened 73 restaurants.

New units weigh on margins in a second way. Because they open below mature volume and with extra training labor, they earn lower four-wall margins in their first year, a new-unit drag that grows with the pace of openings. A chain accelerating its openings can therefore show a falling restaurant-level margin even if every mature unit is performing well, so bankers separate the margins of mature and young units before drawing conclusions.

The pre-opening add-back

Companies treat these costs differently in their non-GAAP measures. CAVA excludes pre-opening costs from restaurant-level profit but does not add them back in reconciling its Adjusted EBITDA of $152.8 million. Other chains add pre-opening costs back to show run-rate earnings from the existing fleet.

Impairments and closures

The reverse problem arises when units fail. A store whose four-wall cash flow cannot recover its book value triggers an impairment charge, writing down its fixed assets and lease asset. CAVA recorded $4.9 million of impairment and asset disposal costs in fiscal 2025 and added them back in its Adjusted EBITDA. Impairments are non-cash, but they are evidence: a rising number of impaired units is often the first sign that newer cohorts are not earning their returns.

Closing a unit brings cash costs too: paying to exit or sublet the lease, writing off fixtures and sometimes paying severance. Chains add these closure costs back to Adjusted EBITDA as well, on the argument that they relate to units that will no longer exist. Bankers accept the add-back for a genuine one-off clean-up but question it when closures recur every year, since a chain that keeps closing units has a recurring cost of mistakes in its site selection.

Unit economics sit at the center of every growth story in store-based consumer businesses. In an initial public offering, the pitch is usually a proven unit model plus a long runway of sites, as covered in consumer IPOs: selling the brand and unit growth. In a sponsor buyout, the same model decides how much of the purchase price new units can justify and how fast they can be funded from cash flow. In both, investors value a chain partly on the profit its existing units earn and partly on the value each new unit is expected to create above its cost.

Franchised systems add a twist. The franchisor earns royalties and fees rather than four-wall profit, but its growth still depends on unit economics, because franchisees will only sign development agreements if their own units pay back. Franchisee returns are therefore a key diligence item for a franchisor: a brand whose franchisees earn weak cash-on-cash returns will struggle to grow its system, however attractive its royalty stream looks.

The value of the next unit

The second piece of value, from future openings, is fragile. If new units earn their target returns, every opening adds value; if returns slip toward the cost of capital, growth stops adding value even while it adds sales.

Bankers therefore separate the value of the existing fleet from the value of future openings when building a valuation, and test how the second changes as new-unit returns move.

When assessing a store or restaurant chain's unit economics, bankers check:

For a coverage banker, four-wall EBITDA and new-unit returns answer the question beneath every unit growth plan: does each new box earn back what it costs, quickly enough and reliably enough, to be worth building?