Prime Cost: The 65% Line That Decides Your Year

Two numbers, one line

Prime cost is food and beverage cost plus total labor, expressed as a percentage of sales. For most full-service restaurants the target sits near 65%. Above it, the rest of the P&L — rent, utilities, marketing — has almost nothing left to work with.

Why weekly beats monthly

A monthly prime cost tells you what happened. A weekly one tells you what is happening. By the time a bad month closes, the menu, the schedule, and the invoices that caused it are already history.

Pick a fixed day — Monday works — and close the prior week on the same rhythm every time.

Measuring food cost honestly

Start with purchases, adjust for inventory change, and divide by food sales. Count the expensive items: proteins, alcohol, and anything that walks. If inventory counts slip, your food cost is a guess wearing a number.

Labor is not just wages

Total labor includes payroll taxes, benefits, and the tip credit where it applies. It also includes the hours nobody scheduled — overtime, missed breaks, and the shift you covered yourself.

The three levers

When prime cost runs hot, there are only three places to move:

1. Price — adjust the menu, not the whole book, and start with the items carrying the most volume.
2. Cost — renegotiate with vendors and cut the items that do not sell.
3. Labor — schedule to the sales forecast, not to habit.

Track it, then teach it

The number only compounds when your managers can see it. Post the weekly prime cost where the team works, and explain what moved it. Operators who measure it weekly stop being surprised by their year.