Restaurant prime cost is your total food and beverage cost plus your total labor cost, and most healthy restaurants keep it between 55% and 60% of sales. It’s the clearest single read on whether a restaurant makes money, because it captures the two biggest levers you actually control day to day.
Ask ten operators what number they check first and a lot of them will say food cost. That’s the wrong instinct. Food cost tells you half the story, and it’s the half that hides your labor problem. Prime cost puts the two costs you can genuinely move onto the same line, and once you start managing that combined number every week, the guesswork about “where did the money go” mostly disappears.
What prime cost actually includes
Two buckets, nothing exotic:
- Cost of goods sold (COGS) — everything you sell that gets eaten or drunk. Food, liquor, beer, wine, soda, the lime wedge on the glass. Calculated as beginning inventory + purchases − ending inventory for the period.
- Total labor — and this is where people cheat by accident. It’s not just hourly wages. Include salaried managers, payroll taxes, workers’ comp, and benefits. The all-in cost of a body on the schedule, not the number on their offer letter.
What’s not in prime cost: rent, utilities, insurance, marketing, your POS fees, the linen service. Those are real, but they’re mostly fixed or slow to change. You can’t renegotiate your lease on a slow Tuesday. You can absolutely cut a prep cook an hour early or re-price a dish that’s bleeding you. That’s the whole reason prime cost is the number worth watching — it’s the part of the P&L that responds to what you do this week.
How to calculate restaurant prime cost
The formula is boring, which is good:
Prime cost ÷ total sales = prime cost percentage
(COGS + total labor) ÷ sales = your number
Run it as a dollar figure and as a percentage of sales. The dollar figure tells you what left the building; the percentage tells you whether that was too much for the volume you did. A $46,000 prime cost is either great or a disaster depending on whether you sold $80,000 or $65,000 that month — the percentage is what makes it comparable.
Do it weekly, not just monthly. A month is long enough for a bad two weeks to get papered over by a good two weeks, and by the time the accountant hands you the P&L, the problem is 40 days old and cold.
A worked example
Take a neighborhood spot doing $80,000 in sales for the month.
| Line | Amount | % of sales |
|---|---|---|
| Sales | $80,000 | 100% |
| Food & beverage cost (COGS) | $24,000 | 30% |
| Total labor (all-in) | $22,000 | 27.5% |
| Prime cost | $46,000 | 57.5% |
57.5% sits right in the healthy band. That leaves 42.5% of sales — $34,000 — to cover rent, utilities, insurance, marketing, and everything else, with profit at the bottom. If prime cost had crept to 65%, that same restaurant would very likely be running at or below breakeven, and no amount of a busier Friday fixes a structural problem like that.
Notice the split: this operator runs food a little rich at 30% and labor lean at 27.5%. Another restaurant might flip that — 33% food, 25% labor — and land in the same place. There’s no single right mix. A high-volume pizza shop and a chef-driven tasting menu have wildly different ratios and can both be profitable. What they share is a prime cost that stays in the zone.
Where the targets sit by concept
| Type of restaurant | Typical prime cost target |
|---|---|
| Quick service / counter | 55% or below |
| Full-service casual | 55%–60% |
| Bar-forward / high liquor mix | often under 55% (cheaper liquor pour) |
| Fine dining / labor-intensive | can push toward 60%+ if average check supports it |
Treat these as guardrails, not gospel. Your rent matters here too — if you’re paying a low occupancy cost, you can carry a slightly higher prime cost and still profit. Pay premium rent for a corner location and you need prime cost tighter to leave room.
Watch out: A prime cost that’s too low can be a warning, not a win. Cutting labor to 20% often shows up as slow tickets, thin sections, and a burned-out crew — and it walks straight out the door as lost sales and turnover. Cheap isn’t the goal. The right number for your concept is.
How to bring prime cost down
Because it’s two buckets, you have two sets of levers. Work the food half and the labor half separately — a target that only tracks the sum lets one hide behind the other.
On the food side:
- Cost your recipes down to the plate and re-price anything running above a 30–35% food cost. Most menus have two or three dishes quietly losing money because a protein price moved and nobody adjusted. Our Recipe & Plate Cost Calculator gives you the per-plate number fast so you can see which items to re-price, re-portion, or cut.
- Take inventory on a real schedule. Waste, over-portioning, and theft are invisible until you count.
- Tighten portions on the biggest sellers — an extra half-ounce of protein across a thousand covers is real money.
On the labor side:
- Schedule to your sales forecast, not to habit. If Tuesday lunch does $900, it doesn’t need the same floor as Friday.
- Track labor as a percent of sales by daypart, and cut the shifts that consistently sit above target. Modeling it first with a restaurant labor cost calculator shows you what a schedule change does to the percentage before you actually post it.
- Cross-train so one person covers two stations on a slow shift instead of two people covering one each.
A point or two off prime cost sounds small. On $80,000 a month, two points is $1,600 — roughly $19,000 a year that drops toward the bottom line. That’s the difference between a restaurant that limps and one that pays its owner.
Frequently asked questions
What is a good prime cost for a restaurant?
For most full-service restaurants, 55%–60% of sales is the healthy range. Quick-service and counter concepts often aim for 55% or below. The right target depends on your concept, average check, and occupancy costs — a spot with low rent can carry a slightly higher prime cost and still profit.
Why is prime cost more important than food cost alone?
Food cost only covers COGS. A restaurant can hit a great 28% food cost and still lose money because labor is running at 38%. Prime cost combines the two costs you actively control, so it catches problems that food cost alone hides.
What’s included in restaurant labor cost for prime cost?
All-in labor: hourly wages, salaried management, payroll taxes, workers’ comp, and benefits. Using only base wages understates your real labor cost and makes prime cost look better than it is. A restaurant labor cost calculator helps you capture the fully loaded number.
How often should I calculate prime cost?
Weekly. A monthly number lets a bad stretch get averaged away and reaches you too late to act on. Running it every week — even a rough version — lets you adjust scheduling and purchasing while it still matters.
Can prime cost be too low?
Yes. Slashing labor to hit a low number usually shows up as slow service, thin coverage, and staff turnover, which quietly costs you sales. The goal isn’t the lowest prime cost — it’s the right one for your concept, hit consistently.
Does prime cost include rent and utilities?
No. Rent, utilities, insurance, and marketing are operating expenses, not prime cost. Prime cost is only COGS plus labor — the costs that move with what you do day to day.
Know your prime cost without living in a spreadsheet.
You can only manage prime cost weekly if your books are current weekly. Tabby keeps the bookkeeping behind your food and labor numbers up to date automatically, so the figure you need is there when you check it — not 40 days late. Start a free trial and get the number that decides your profit at your fingertips.
