Restaurant unit economics India — the full guide from prime cost to payback

About this piece. Restaurant unit economics is a phrase that gets used loosely. Investors mean one thing by it; operators usually mean another. This piece is the full guide for Indian independent and small-chain operators — the ladder of numbers from prime cost up to four-wall EBITDA, contribution per cover, payback period, and what each one tells you about whether the outlet is healthy. Worked example in INR throughout.

The ladder — six numbers, in order

Every other unit-economics metric is a derivative of these six. Track them in this order, every month, on a single sheet.

1.  Net sales              (₹/month, pre-GST, post-aggregator commission)
2.  Prime cost             (₹/month) — COGS + total labour
3.  Four-wall operating cost (₹/month) — prime cost + occupancy + other variable + other fixed
4.  Four-wall EBITDA       (₹/month) — net sales – four-wall operating cost
5.  Contribution per cover (₹/cover) — (net sales – variable cost) / covers
6.  Payback period         (months) — initial capex / monthly four-wall EBITDA

Numbers 1–4 are monthly health. Numbers 5–6 are structural health. A green-zone outlet has all six in the right band. A red-zone outlet has at least two out of band.

Number 1 — Net sales

Net sales is pre-GST and net of aggregator commission. Always.

Operators routinely report gross aggregator sales as revenue and book the commission as an expense. This single mis-classification distorts food cost %, contribution margin, and breakeven all at once. Revenue should be what actually lands in the bank account before expenses, not before commission.

A composite NCR casual-dine outlet doing 100 covers/day at ₹600 average ticket sees:

Gross sales           ₹18,00,000
Less: aggregator comm   -₹84,000  (28% of aggregator portion at 25% commission)
Net sales            ₹17,16,000   <-- this is the line to track

Some operators prefer to report gross sales for headline reasons but maintain net sales internally for unit-economics work. Either is fine — pick one and be consistent.

Number 2 — Prime cost

Prime cost is COGS + total labour cost. The single most diagnostic ratio in restaurant operations:

Prime cost % = (COGS + Total labour) / Net sales

Target bands:
  QSR / cloud kitchen      48 – 56%
  Casual dine              52 – 60%
  Fine dine                60 – 68%
  Bar / pub                48 – 58%

If prime cost % is in band, almost every other ratio falls into place. If it's out of band, no clever trick on the rest of the P&L recovers the gap. See the prime cost calculator piece for the full formula and worked example.

Number 3 — Four-wall operating cost

Everything that happens inside the four walls of the outlet. Excludes corporate overhead, brand fees, and head-office costs (relevant for chains).

The composite outlet from above:

Number 4 — Four-wall EBITDA

Four-wall EBITDA   = Net sales – Four-wall operating cost
Four-wall EBITDA % = Four-wall EBITDA / Net sales

For the composite outlet:

Four-wall EBITDA = 17,16,000 – 15,30,000 = ₹1,86,000
Four-wall EBITDA % = 1,86,000 / 17,16,000 = 10.8%

An outlet running below 8% four-wall EBITDA is not yet a unit-economics-positive business. It's a job that pays the owner a salary disguised as an outlet.

Number 5 — Contribution per cover

Contribution per cover is the rupees each cover contributes towards fixed costs and profit:

Contribution per cover = (Net sales – Total variable cost) / Number of covers
                       = Average ticket × Contribution margin %

For the composite outlet at ₹600 average ticket and ~58% contribution margin:

Contribution per cover = 600 × 0.58 = ₹348

Why this number matters more than gross average ticket: it's what the next cover adds to the bottom line. If a marketing campaign costs ₹6,000 to run and brings 20 incremental covers, it must clear 20 × ₹348 = ₹6,960 in incremental contribution. That's the campaign math.

A few format reference points:

Number 6 — Payback period

Payback period (months) = Initial capex / Monthly four-wall EBITDA

Initial capex includes interiors, kitchen equipment, furniture, signage, licences, security deposit, working capital, pre-opening marketing, and trial-run wastage. A common omission is the security deposit — operationally it's recoverable at lease-end, but it's locked working capital and should be in the capex base for payback purposes.

For the composite outlet with ₹65 lakhs initial capex and ₹1.86 lakhs monthly four-wall EBITDA:

Payback period = 65,00,000 / 1,86,000 ≈ 35 months ≈ 3 years

Indicative payback period bands for healthy Indian outlets:

A payback period over 60 months is usually a signal that one or more of the upstream numbers (prime cost, occupancy, ticket size) is out of band. The fix is upstream, not in renegotiating the lease late.

The full unit-economics one-pager — composite NCR casual-dine

Status: yellow. Prime cost is at the upper edge of the casual-dine band. Four-wall EBITDA is below the target band. Payback is acceptable but tight. The operator playbook would be — run the food cost and labour cost loops to pull prime cost down by 3 points; that recovers ~₹50,000/month, lifts EBITDA into the 14% band, and pulls payback down to ~28 months.

How the six numbers move together

The hardest thing to internalise about restaurant unit economics is that these numbers don't move independently. Pulling on one usually moves at least one other:

Run the unit-economics one-pager before any change like the above and after for two months. The before-after delta is the only reliable way to know whether the change worked.

What to track weekly vs monthly vs quarterly

The cadence matters as much as the numbers.

• Weekly: Net sales, covers, average ticket, COGS estimate (rolling stock takeoff)
• Monthly: Full ladder — all six numbers
• Quarterly: Re-derive contribution margin, re-classify variable vs fixed, re-run breakeven, refresh payback projection

A monthly ritual that takes 90 minutes and produces all six numbers on one page is worth more than a daily dashboard that no one reads.

When unit economics says "close the outlet"

The hardest call. Three signals together — not any one alone:

1. Four-wall EBITDA below 5% for 6+ months with no structural lever left to pull (rent renegotiated, prime cost in band, marketing already efficient).
2. Payback period over 84 months at current run rate.
3. Contribution per cover trending down despite stable average ticket — usually a sign that variable cost has crept up in places that aren't visible.

When all three are true, the outlet is most likely subsidising itself from another revenue source (the operator's other outlet, personal capital, or working capital that should be replenishing). The disciplined call is to either restructure (smaller footprint, narrower menu, lower fixed cost) or close. Holding the line "for one more quarter" is how operators erode the capital they need for the next outlet.

Related on Restaurant Daily

• Restaurant prime cost calculator India — formula + worksheet
• Restaurant breakeven analysis India — formula and worked example
• Menu engineering matrix for Indian restaurants