Retail unit economics: the model behind a store that works
Four-wall margin, occupancy cost ratio, payback period and contribution per square metre — the small set of numbers that decides whether a store network can scale.
10 min read · Updated 1 August 2026
Retail expansion plans usually fail arithmetic before they fail execution. A network that opens stores which each return their capital in three years cannot outrun a network that does it in eighteen months, regardless of brand strength.
This guide sets out the standard store-level model, the ratios that lenders and investors look at, and the variations that are specific to Asian markets — turnover rent in malls, high store density, and the effect of e-commerce cannibalisation on catchment maths.
The four-wall P&L
The four-wall P&L measures a store as if it were an independent business, excluding head office cost. It is the only view that tells you whether a location earns its keep.
| Line | Definition |
|---|---|
| Net sales | Gross sales less returns and sales tax |
| Cost of goods | Landed cost of items sold, including inbound freight |
| Gross margin | Net sales less cost of goods |
| Occupancy | Base rent, turnover rent, service charge, utilities |
| Payroll | Store staff, including statutory contributions |
| Direct costs | Card fees, shrinkage, consumables, local marketing |
| Four-wall contribution | Gross margin less occupancy, payroll and direct costs |
Occupancy cost ratio: the number landlords and lenders watch
Occupancy cost ratio is total occupancy cost divided by net sales. It is the fastest test of whether a lease is survivable, and it is the ratio that mall leasing teams themselves use when they decide which tenants to renew.
In Asian malls, leases frequently combine a base rent with turnover rent — a percentage of sales above a threshold. This is genuinely useful for a new entrant, because it converts part of a fixed cost into a variable one and shares the risk of a slow first year with the landlord. It also caps the upside: a store that outperforms pays for the privilege.
- Always model occupancy including service charge and promotional levies, not just headline rent.
- Ask for a turnover-rent structure in a new market where the catchment is unproven.
- Check the rent review mechanism and the fit-out contribution; both change payback materially.
Payback and the capital plan
Payback period is store capital expenditure divided by annual four-wall contribution. Capital expenditure means fit-out, equipment, opening stock and pre-opening costs — the opening stock line is the one most often forgotten, and in apparel it is frequently the largest single item.
A network that funds new openings from operating cash needs paybacks short enough that each cohort of stores finances the next. Where paybacks stretch, growth becomes dependent on external funding and the plan becomes fragile to a single weak season.
Productivity measures worth tracking
- Sales per square metre — comparable across formats within a market, not across markets.
- Contribution per square metre — the same measure after occupancy and payroll, and far more honest.
- Sales per labour hour — the operational lever store managers can actually move.
- Conversion rate and average transaction value — the two components of any sales change.
- Like-for-like sales growth — restricted to stores trading a full comparable period.
The Asian adjustments
Three regional factors distort store models built on Western assumptions. First, mall dominance: in much of Southeast Asia, prime retail is concentrated in malls owned by a small number of developers, so occupancy cost is less negotiable and location choice is narrower than a catchment map suggests.
Second, e-commerce penetration is high and delivery is fast, which compresses the catchment a store can claim for non-urgent categories. Third, staff cost structures vary enormously across the region, so payroll ratio benchmarks do not travel between markets — a Japanese and an Indonesian store with identical sales will have very different payroll lines and both can be correct.
Key takeaways
- Four-wall contribution, not revenue, is the measure of a location.
- Occupancy cost ratio is the single fastest test of a lease.
- Include opening stock in store capital expenditure or payback will be understated.
- Benchmarks do not travel between Asian markets; build them per country.
Questions & Answers
What is a good occupancy cost ratio?
It varies by category and format — high-margin categories tolerate far more than grocery. The useful discipline is to set an internal ceiling per format, per market, based on your own stores that work, and refuse leases above it.
Should e-commerce orders fulfilled by a store count in that store's sales?
Attribute them consistently and report both views. Excluding them understates a store's contribution to the network; including them at full value overstates the case for keeping expensive locations open.
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Written by
Retail News Asia Editorial Desk
Leadership, strategy and organisation coverage
Researched, written and fact-checked by our newsroom. Last reviewed 1 August 2026. Meet the editorial team.
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