Prime cost is your food cost plus your total labor cost. It is the single most important number for understanding whether your restaurant is actually profitable.

Food cost covers everything you purchase to make and serve food and drinks. Proteins, produce, dairy, dry goods, alcohol, takeout packaging. Labor cost includes wages and salaries for every employee, plus employer payroll taxes, workers’ comp, and any benefits you provide. Add those two categories together and you have prime cost.

The target for most restaurants is 60 to 65 percent of total sales. So if you bring in $20,000 in a week, your combined food and labor should land somewhere between $12,000 and $13,000. Once prime cost climbs above 70 percent, it becomes very difficult to cover rent, utilities, insurance, marketing, supplies, and everything else while still keeping any profit. At that point, you’re working hard and keeping almost nothing.

The reason prime cost matters more than looking at food cost or labor cost separately is that the two are connected. A restaurant that preps everything from scratch might run lower food cost but higher labor. A place that buys pre-portioned ingredients and pre-cut produce spends more on food but saves on prep hours. Looking at either number alone gives you an incomplete picture. Prime cost captures both sides together and tells you what’s actually happening.

Well-run restaurants track prime cost weekly. Monthly is too late. If food cost spikes in week one because of vendor price increases, over-portioning, or waste, you want to catch it right away. Waiting until month-end means three more weeks of lost money before you even know there’s a problem. Weekly tracking gives you time to adjust menus, tighten portions, or cut scheduled hours before a bad trend turns into a bad month.

To calculate it, you need accurate food purchases for the week and total labor cost including taxes and benefits for the same period. Divide that combined number by your total sales for the week and you have your prime cost percentage. It takes a few minutes once you have the numbers, and those few minutes are worth more than almost anything else you do with your time as an owner.

When prime cost runs too high, the fix usually comes from one of a few places. Menu prices that haven’t kept up with ingredient costs. Portions that have crept up over time. Too many labor hours scheduled for the volume of sales. Waste from poor prep planning or spoilage. Each of these problems has a specific fix, but you can’t fix what you can’t see.

This is where clean, current books make the difference. If your expenses aren’t categorized correctly or your bookkeeping is weeks behind, you can’t calculate prime cost with any confidence. Working with Dodge County bookkeepers who understand how restaurants operate means your numbers are organized in a way that actually supports weekly tracking and real decision-making.

Restaurant bookkeeping done right separates food cost from other expenses, tracks labor accurately, and gives you reports that make prime cost easy to calculate. Without that foundation, you’re guessing. And in a business with margins as tight as a restaurant, guessing is expensive.