Restaurant Prime Cost: How to Calculate and Control Your Most Important Profitability Metric

A restaurant doing $2 million in annual sales with a prime cost of 67 percent instead of 63 percent is leaving $80,000 on the table. That is the difference between an owner who takes home a real draw and one who subsidizes the business from personal savings. The National Restaurant Association reported that 42 percent of operators were not profitable in 2025, and 33 percent remained unprofitable through the first half of 2026. The gap between profitable and unprofitable restaurants is rarely about sales volume. It is about prime cost. Use our Restaurant Prime Cost Calculator to calculate your weekly prime cost percentage and compare it against 2026 benchmarks for your concept.

What Is Restaurant Prime Cost?

Prime cost is the sum of your Cost of Goods Sold (food and beverage) plus total labor cost, expressed as a percentage of sales. It bundles the two largest controllable expenses into a single metric that tells you whether your operation is actually making money.

Prime Cost = COGS (Food + Beverage) + Total Labor Cost
Prime Cost % = (Prime Cost / Total Sales) x 100

Food cost percentage alone tells you what your menu costs to produce. Labor percentage alone tells you what your staff costs. Neither tells you whether the whole operation is profitable. A kitchen can post a healthy 28 percent food cost and still lose money if labor is running at 38 percent. Prime cost catches that. If you only check one number every week, make it prime cost.

What Counts as Labor Cost?

Total labor cost is broader than most operators expect. It includes:

• Gross wages for all staff, front of house and back of house
• Salaried management compensation, including your own salary if you take one
• Employer payroll taxes (FICA, FUTA, SUTA)
• Health insurance and benefits
• Workers' compensation insurance
• Overtime premiums
• Bonuses and shift incentives

Counting only hourly wages understates labor by 10 to 15 percent. A general manager making $65,000 per year with payroll taxes, benefits, and workers' comp is roughly $80,000 all-in. Excluding that understates your true prime cost and gives you a false sense of where you stand.

How to Calculate Prime Cost Step by Step

Step 1: Calculate COGS

COGS = Beginning Inventory + Purchases - Ending Inventory

Count inventory on a consistent day each week. Monday morning before service is standard. Pull all purchase invoices for the week. This week's ending inventory becomes next week's beginning inventory.

Step 2: Pull Total Labor Cost

Get your payroll summary for the same period. Include gross wages, employer payroll taxes, benefits, workers' comp, and overtime. If you cannot get exact weekly numbers for benefits and insurance, multiply gross wages by your labor burden rate (typically 1.15 to 1.25 for restaurants) to estimate the full cost.

Step 3: Divide by Total Sales

Use POS totals for the same Monday-to-Sunday period. Divide prime cost by total sales and multiply by 100.

Worked Example

A casual dining restaurant with weekly sales of $48,000:

• Beginning inventory: $12,500
• Purchases this week: $16,200
• Ending inventory: $11,800
• COGS: $12,500 + $16,200 - $11,800 = $16,900
• Gross wages: $13,800
• Payroll taxes and benefits: $3,200
• Total labor: $17,000
• Prime cost: $16,900 + $17,000 = $33,900
• Prime cost percentage: ($33,900 / $48,000) x 100 = 70.6 percent

At 70.6 percent, this restaurant is in trouble. After prime cost, only 29.4 percent of sales remain to cover rent, utilities, insurance, marketing, debt service, and profit. For a casual dining concept, the target is 60 to 65 percent. This operator needs to find roughly $2,700 in weekly savings, either through food cost reduction, labor scheduling changes, or menu price increases.

2026 Prime Cost Benchmarks by Concept

Prime cost targets vary by restaurant type because service style, menu complexity, and beverage mix all affect the ratio. The Bureau of Labor Statistics reported that private industry employer costs for employee compensation averaged $46.60 per hour in March 2026, with benefits accounting for 30.1 percent of total compensation. For restaurants, where benefit loads are lighter but wage pressures are intense, labor cost as a percentage of sales has risen 41 percent since 2019.

The general rule: prime cost should not exceed 65 percent for full-service restaurants and 60 percent for quick-service. The old industry standard of "keep it under 65 percent and you are fine" is from an era of cheaper food and cheaper labor. With total restaurant expenses up 36 percent since 2019, 65 percent leaves almost nothing. Treat 65 percent as the ceiling, not the target.

Why Weekly Tracking Matters

Monthly prime cost tracking is too slow. A restaurant can bleed $10,000 in a single month from a scheduling problem or a supplier price increase, and by the time the monthly P&L arrives, the damage is done. The best operators pull prime cost every Tuesday and compare it against a four-week rolling average.

Weekly tracking turns prime cost from a trailing indicator into a leading one. If your food cost spikes from 29 percent to 34 percent in one week, you can investigate immediately. Was it a vendor price increase? A portion control issue? Waste from a new menu item? You cannot answer these questions six weeks after the fact.

Common Prime Cost Mistakes

Excluding salaried managers from labor. Prime cost includes all labor. A GM making $65,000 with burden is roughly $80,000 all-in. Excluding that understates your true prime cost and hides the real cost of management overhead.

Not including employer payroll taxes. FICA, FUTA, and SUTA add 7.65 to 10 percent on top of gross wages. Leaving these out makes a 64 percent prime cost look like a comfortable 59 percent.

Comparing to the wrong benchmark. A fine dining restaurant comparing its 63 percent prime cost to a QSR target of 55 percent will make unnecessary cuts that hurt service quality. Benchmark against your own concept and market.

Tracking food and labor separately but never combining them. Two restaurants can both run 62 percent prime cost with completely different problems. One might have 34 percent food cost and 28 percent labor. The other might have 28 percent food cost and 34 percent labor. The fix for each is different. But if you never combine them, you miss the fact that 62 percent is at the edge of viability for a casual concept.

Related Tools on ProfessionCalculators.com

To break down the food side of your prime cost, the Food Cost Percentage Calculator calculates ingredient cost as a percentage of menu price. For the labor side, the Labor Cost Percentage Calculator measures total staffing cost against sales. If you are adjusting menu prices to bring prime cost into range, the Menu Pricing Calculator helps you set prices based on target food cost percentages. For a deeper dive on food cost methodology, see our guide on food cost percentage calculation.

Frequently Asked Questions

What is a good prime cost percentage for a restaurant?

Most restaurants target 58 to 62 percent of sales. Quick-service and fast-casual concepts can reach 55 percent or lower. Full-service casual dining should stay below 65 percent. Fine dining can run up to 65 percent because premium ingredients and higher service standards increase both COGS and labor. Anything above 65 percent leaves insufficient margin for rent, utilities, insurance, and profit.

How often should I calculate prime cost?

Weekly. Monthly tracking is too slow to catch drift. Pull prime cost every Tuesday for the previous Monday-to-Sunday period and compare it to your four-week rolling average. This cadence lets you detect and fix problems while they are still small.

Should salaried managers be included in prime cost?

Yes. Prime cost includes all labor: hourly wages, salaried compensation, payroll taxes, benefits, workers' comp, and bonuses. Excluding salaried managers understates your true labor cost and gives you an artificially low prime cost percentage.

What is the difference between prime cost and food cost percentage?

Food cost percentage is just the COGS portion: ingredient cost divided by sales, typically 28 to 35 percent. Prime cost adds total labor on top. A restaurant can have a healthy food cost and still lose money because labor is out of control. Prime cost is the better overall health check because it captures both controllable expense categories in one number.

My prime cost is over 70 percent. Where do I start?

Split the problem. Calculate food cost percentage and labor percentage separately and compare each to benchmarks for your concept. Whichever is furthest out of range is where you dig first. If both look normal, the issue is pricing, not costs. You may need to raise menu prices or reengineer your menu to increase average check without increasing COGS.

Conclusion

Prime cost is the single number that tells you whether your restaurant is profitable. It is simple to calculate and hard to manage because it requires discipline in inventory counting, payroll reporting, and weekly comparison. If your prime cost is above 65 percent for a full-service concept or above 60 percent for quick-service, the math is working against you. Pick one line to attack first. If food cost is the problem, audit your supplier invoices and portion sizes. If labor is the problem, rebuild your schedule around sales volume by daypart. Track the number weekly. A two-point improvement on $2 million in sales is $40,000 back in your pocket.