What a 38% Food Cost Actually Costs You at the End of the Month

What food cost percentage actually means

Food cost percentage is the single number that tells you whether your kitchen is making money or quietly bleeding it. It is the cost of the food you sold divided by the revenue from selling it. If you spent $14,000 on food in a week and brought in $42,000 in food sales, your food cost is 33%.

Most full-service restaurants should run between 28% and 32%. Fast casual can push lower, to 25% to 30%. If you are above 33% and you are not running a high-volume, low-margin concept, something is wrong and it is costing you real money every week you ignore it.

How to calculate it

Take your beginning inventory, add your purchases for the period, then subtract your ending inventory. That gives you cost of goods used. Divide that by your food sales for the same period and multiply by 100.

A restaurant doing $50,000 in weekly food sales at 33% food cost is spending $16,500 on food. If you get that to 31%, you spend $15,500. That is $1,000 more in profit every single week. Over a year, that is $52,000. That is a person's salary. That is a new piece of equipment. That is the difference between a good year and a rough one.

Theoretical vs. actual food cost

Theoretical food cost is what your recipes say every dish should cost. Actual food cost is what your invoices and inventory counts say it actually cost. The gap between the two is where the money goes.

A 3-point gap between theoretical and actual is normal. A 5-point gap means you have a problem. The gap comes from waste, over-portioning, theft, spoilage, comps, and bad receiving. You cannot fix what you do not measure. If you have never done a full inventory count and compared it to your theoretical, you are flying blind.

Five things that cause food cost to run high

1. Over-portioning. Your line cook puts 6 ounces of protein on a plate that was costed at 5 ounces. That is 20% more food cost on every plate, every shift, every day.

2. Waste and spoilage. Food that gets thrown away because it was prepped too far ahead, stored wrong, or ordered in quantities too large to use before it goes bad.

3. Not marking up third-party menu prices. If your DoorDash menu is priced the same as your in-store menu, you are absorbing a 25 to 30% commission on food that was already costed at full margin. Read our breakdown of what DoorDash actually costs you per order.

4. Vendor price creep. Your suppliers raise prices quietly over time and nobody catches it because nobody checks the invoices against the quote sheets. We cover how to handle this in our guide on negotiating with food vendors.

5. No inventory cadence. If you are not counting inventory at least weekly, you do not know your food cost until the end of the month. By then, the damage is done.

What to fix first

Start with inventory. You cannot manage what you do not measure. Do a full count this week. Compare it to your purchases. Calculate your actual food cost. Then look at your top 10 menu items and check whether your portions match your recipes. Most restaurants find their biggest leak in the first 30 minutes of looking.

Food cost is also the biggest component of your prime cost, which is the single most important number in your restaurant. If you want help finding where your food cost is actually leaking, get a free audit. We will look at your numbers and tell you exactly what we see.

The Bottom Line

Food cost is cost of goods sold divided by food revenue, and it should run between 28% and 32% for most restaurants. A 2-point swing at $50,000 in weekly sales is $52,000 a year. The gap between theoretical and actual cost is where waste, over-portioning, and vendor price creep hide. Count weekly, check portions, and you find the leak fast.