Restaurant Prime Cost: The 60–65% Ceiling That Decides Survival

When an operator tells us their restaurant is losing money, the first number we ask for is not revenue, and it is not the food-cost percentage everyone fixates on. It is prime cost — food and labour, added together, as a share of sales. More restaurants are decided by that one number than by anything else on the profit-and-loss statement, and most owners have never calculated it as a single figure. This is the gauge we read first in a turnaround, and it is the heart of how GGB reads a business.

It is not financial advice, and the ranges here are typical and indicative — your own P&L gives the exact figures. But the discipline is universal: prime cost tells you, faster than anything else, whether you have an operating problem you can fix or a structural one you cannot outrun. It sits above the detail in food-cost control and restaurant profit margins; this piece is about the master number those two feed into.

What prime cost is — and why food and labour belong together

Prime cost is simply your food (and beverage) cost plus your labour cost, expressed as a percentage of revenue. Two lines, one number. Most operators track them separately — a food-cost percentage here, a wage bill there — and miss the thing that actually governs the model: their sum.

They belong together because they are the two largest controllable costs in the business, and because they trade against each other. A scratch kitchen with everything made in-house runs a lower food cost but needs more skilled labour; a concept built on prepared or bought-in components runs a higher food cost but less labour. Move work from one line to the other and the individual percentages shift — but the constraint that decides profitability is where the two land together. Judge either in isolation and you can talk yourself into believing a kitchen-heavy concept with a fashionable food cost is healthy while its labour quietly sinks it — or the reverse.

The 60–65% ceiling

Here is the number worth keeping. As a working rule, a restaurant wants its prime cost — food plus labour — somewhere in the mid-50s to low-60s as a share of revenue, and it wants to treat the mid-60s as a ceiling. Component-wise that is food at or below 32% and labour at or below 30% — together at or below a 62% prime-cost ceiling, which sits inside that band; concepts vary, which is exactly why the sum is the honest gauge.

The ceiling exists because of simple arithmetic. Whatever prime cost does not consume is all you have left to cover everything else — rent and occupancy, utilities, marketing, repairs, licences, finance — and to leave a profit. If prime cost is 60%, you have 40% to do all of that and still keep a single-digit-to-mid-teens margin, which is workable. If prime cost is 70%, you have 30% — and in most locations rent and overheads alone will eat it. The restaurant can be full, well-run on the floor, and still structurally unable to make money, because the model was broken before the doors opened.

Read it down the P&L

The reason prime cost is the master gauge is that it sits at the top of the P&L, where the largest, most controllable money moves. Read the statement the way an operator should:

• Revenue — everything that came in.
• Less food and beverage cost — what the product cost.
• Less labour — wages, and the on-costs that come with them.
• = what’s left after prime cost — the contribution the rest of the business lives on.
• Less rent and occupancy — the fixed line you negotiated once and cannot change after.
• Less the controllable overheads — utilities, marketing, repairs, the rest.
• = the profit that actually reaches you.

Everything below prime cost is real and matters, but it is smaller and slower to move. Prime cost is where the largest sums sit, where weekly discipline pays off most, and where a problem is either caught early or compounds out of reach. That is why we read it first.

What breaching the ceiling actually does

A prime cost above the ceiling does something specific and brutal: it makes you work for the landlord and the payroll before yourself. Service can be excellent, the reviews glowing, the room full — and there is still nothing at the bottom, because food and labour are taking the share the rest of the business needed.

The hard part is that volume does not fix it. If the model loses a few fils of margin on every dirham because of a prime-cost overshoot, more covers simply scale the loss. A structural prime-cost problem is not solved by a busier Friday; it is solved by resetting the structure — the recipes and portions on the food side, the schedule and productivity on the labour side, and sometimes the concept or the price itself. This is the line between an operating problem you can fix inside the current four walls and a structural one that needs the model rebuilt. Prime cost is how you tell the two apart.

Holding it: one gauge, watched weekly

The discipline is the same one that holds every other line, applied to the number that matters most: a prime-cost figure the owner sees weekly, not a food cost and a labour cost discovered separately at month-end. Track the two components — the food-cost variance and labour as a share of sales — but watch their sum against your ceiling, because that sum is what survival turns on. Where labour is the heavier half, the Labour Productivity read shows whether the schedule is matched to covers; where food is, the weekly count and costed recipes do the work.

Trade between the two lines deliberately, by concept — but never let their total drift through the ceiling unwatched. A restaurant that keeps its prime cost in range and reads it every week is in control of the one number that decides the rest.

Start by seeing it

If revenue is holding but the profit has thinned, prime cost is the first place to look — and most owners have never seen theirs as a single weekly number. The Restaurant Profit Leak Audit takes five figures — revenue, food, labour, rent and delivery commission — and shows where your biggest leaks are, including how food and labour sit together, in about two minutes. It is free and confidential, and it is the honest place to begin before a full, P&L-based turnaround that resets prime cost and installs the weekly discipline that keeps it in range.