Prime cost is the only number that matters in a restaurant. Not revenue. Not food cost. Not labor cost. Prime cost. It's the sum of your cost of goods sold (food and beverage) plus your total labor cost (wages, taxes, benefits). These two line items typically represent 55-65% of your revenue. If your prime cost is under control, your restaurant is profitable. If it's not, nothing else matters.
A restaurant group in Atlanta was doing $3.2 million in annual revenue across two locations. The owner showed me their P&L. Revenue was growing 12% year over year. They were losing $80,000 a year. Their prime cost was 68%. Food cost 32%. Labor 36%. They were spending $8 of every $10 on food and labor. There was nothing left for rent, utilities, insurance, marketing, or profit. We got prime cost to 58% in 4 months. They made $120,000 profit the following year.
Industry Data & Sources:
The National Restaurant Association's 2026 State of the Industry report provides benchmark data on restaurant costs and profitability.
RestaurantOwner.com surveys show that top-performing restaurants maintain prime costs between 55-60%.
What Prime Cost Actually Includes
Cost of Goods Sold (COGS)
Food purchases (all food ingredients, including items used for staff meals and comps), beverage purchases (alcohol, non-alcoholic beverages, bar supplies like garnishes and mixers), minus ending inventory (what you didn't use), plus beginning inventory (what you had at the start of the period).
Most restaurants calculate food cost as a percentage of food sales and beverage cost as a percentage of beverage sales. This is more useful than a combined COGS percentage because food and beverage have very different cost structures.
Total Labor Cost
Hourly wages (servers, cooks, dishwashers, hosts, bussers, bartenders), salaried wages (managers, chefs, administrative staff), payroll taxes (Social Security 6.2%, Medicare 1.45%, FUTA 0.6%, SUTA varies by state), workers' compensation insurance (2-5% of payroll depending on your claims history), employee benefits (health insurance, retirement contributions, meals, uniforms), paid time off (vacation, sick leave, holidays).
Your true labor cost is typically 15-25% higher than your wage expense. A $50,000 salaried manager costs you $57,500-$62,500 after taxes and benefits. Budget for the real number.
Prime Cost Benchmarks by Concept
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Full-service restaurant: Prime cost 55-65%. Food cost 28-32%. Labor cost 28-33%. Target: under 60%.
Fast casual: Prime cost 50-60%. Food cost 25-30%. Labor cost 25-30%. Target: under 55%.
Quick service: Prime cost 50-58%. Food cost 25-30%. Labor cost 25-28%. Target: under 55%.
Fine dining: Prime cost 55-65%. Food cost 30-35%. Labor cost 30-35%. Target: under 65%. Fine dining has higher food and labor costs but higher average checks, so the dollar profit per cover can still be strong.
Pizza: Prime cost 45-55%. Food cost 20-25%. Labor cost 25-30%. Target: under 50%. Pizza has the best prime cost ratio in the industry.
Bar/tavern: Prime cost 40-50%. Beverage cost 18-22%. Labor cost 22-28%. Target: under 45%. Alcohol has much better margins than food.
If your prime cost is above 65%, you are losing money on operations. Period. You might be profitable on paper because of catering, events, or other revenue streams, but your core restaurant operations are bleeding cash.
How to Calculate Prime Cost
Weekly Calculation
Every Monday morning, calculate last week's prime cost. This is the most important financial discipline in your restaurant.
Step 1: Count ending inventory. Every item in your walk-in, dry storage, and bar. Use a count sheet organized by supplier and storage location. This takes 1-2 hours per week. Do it Sunday night or Monday morning.
Step 2: Calculate COGS. Beginning inventory (last week's ending inventory) + purchases (all invoices from last week) - ending inventory (this week's count) = COGS.
Step 3: Pull labor cost. Your POS or payroll provider should give you total labor cost including taxes and benefits. If not, calculate: gross wages + employer payroll taxes + benefits cost.
Step 4: Pull revenue. Total sales from your POS for the same period.
Step 5: Calculate percentages.
Monthly Reconciliation
Weekly numbers are directionally accurate but not precise. Monthly reconciliation with your accounting software (QuickBooks, Xero) gives you the real numbers. Adjust your weekly tracking based on monthly actuals.
The Prime Cost Dashboard
Track these numbers every week and post them where your management team can see them:
| Metric | Target | Last Week | Month to Date | Trend |
|---|---|---|---|---|
| Food Cost % | 30% | 31.2% | 30.8% | â |
| Labor Cost % | 30% | 29.1% | 29.5% | â |
| Prime Cost % | 60% | 60.3% | 60.3% | â |
The trend arrow is the most important column. Is each metric moving in the right direction? A 0.5% increase in food cost on $1 million in revenue is $5,000. That's real money.
How to Reduce Prime Cost
Reducing Food Cost
Negotiate with suppliers. Get 3 quotes for every major protein and produce category. Show Supplier A Supplier B's price. Ask them to beat it. Do this quarterly. Prices change. Your supplier's willingness to negotiate changes.
Reduce waste. Track waste by category: spoilage (food that went bad before it could be used), overproduction (food that was prepared but not sold), trimming (edible portions discarded during prep), theft (inventory that disappears). Each category requires a different solution.
Fix your menu. Remove low-margin, low-popularity items. Raise prices on high-popularity items. Engineer your menu to steer customers toward high-margin dishes. (See our menu engineering guide.)
Control portions. Weigh proteins. Use portion scoops for sides. Measure sauces. A 10% over-portion on your top-selling protein costs you thousands per year.
Reducing Labor Cost
Schedule to sales. Don't schedule based on last week's schedule. Schedule based on projected hourly sales. (See our scheduling guide.)
Cross-train employees. A server who can also bartend. A cook who can also work the dish station. A host who can also bus tables. Cross-trained employees let you run leaner shifts.
Reduce overtime. Overtime is a 50% premium. Schedule employees for 35-38 hours, not 40+. The 2-5 hour buffer prevents accidental overtime from a busy shift that runs long.
Review your benefits costs. Are you overpaying for workers' comp? Get new quotes annually. Are you offering benefits nobody uses? Survey your staff. Replace unused benefits with ones they value.
The 1% Rule
A 1% reduction in prime cost on $1 million in revenue is $10,000 in additional profit. Most restaurants can find 3-5% in prime cost reduction without hurting quality or service. That's $30,000-50,000 on $1 million in revenue.
Where to find 1%: negotiate a 3% discount from your primary food supplier (saves 0.9% on food cost), reduce overtime by 50% (saves 0.5-1% on labor cost), reduce food waste by 25% (saves 0.5-1% on food cost), raise menu prices 2% on your top 10 items (reduces food cost % by 0.5-0.7%).
FAQ
How often should I calculate prime cost? Weekly. Every Monday. This is non-negotiable. Monthly is too slow. You can lose $5,000 in a month before you realize there's a problem. Weekly tracking catches problems in days, not weeks.
What's a good prime cost for a new restaurant? Expect 65-70% for the first 3-6 months. You're overstaffed (you don't know your flow yet), you're over-ordering (you don't know your pars yet), and you're comping meals (building goodwill). Target 60% by month 6 and 55-58% by month 12.
Should I include owner's salary in prime cost? No. Prime cost is operational labor. Owner's salary is an administrative expense. Include manager salaries, chef salaries, and any working owner who is on the schedule. Don't include an owner who works 10 hours a week on the business.
How do I handle comps and staff meals in prime cost? Track them separately. Comps should be 1-2% of sales. Staff meals should be 1-2% of sales. If either is higher, investigate. Comps above 2% usually mean service problems. Staff meals above 2% usually mean portion control problems.
Related: Restaurant Labor Cost ¡ Food Cost Percentage ¡ Restaurant Profit Margin
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