Your Food Cost Percentage Is Two Numbers, Not One. The Gap Between Them Is the Cheese You Can't Find.

Actual food cost tells you what left the walk-in. Theoretical food cost tells you what should have, based on your recipe cards and what you rang up. Restaurant365 says the best operators keep the two within about a point. The weekly count that tells you where you stand fits on one clipboard.

A pizzeria worker, face out of frame, counts shrink-wrapped bags of shredded mozzarella on a wire shelf in a walk-in cooler, a clipboard tucked under one arm, with cases of canned tomatoes and lidded tubs of prepped toppings on the shelves around
A pizzeria worker, face out of frame, counts shrink-wrapped bags of shredded mozzarella on a wire shelf in a walk-in cooler, a clipboard tucked under one arm, with cases of canned tomatoes and lidded tubs of prepped toppings on the shelves around. AI-generated image

Get our free one-page cheat sheet of pizzeria cost benchmarks: food, labor, rent and delivery, with a blank for your own numbers.

Food cost percentage is beginning inventory plus purchases, minus ending inventory, divided by food sales for the same period. As restaurant consultant David Scott Peters puts it in FSR magazine, “Beginning inventory + purchases—ending inventory gives you use. Divide use by sales and that’s your food cost percentage.” That’s your actual food cost. On its own, it tells you the money left. It doesn’t tell you why. For that you need a second number, theoretical food cost, and the gap between the two.

The formula only works if the count is honest

Peters is blunt about the formula’s limits: it is “blind to reason.” “Use” covers everything that left the shelf, whether it was sold, spoiled, wasted or stolen. He counts prepped items such as diced onions and peppers, sauces and scratch-made sides in the ending inventory, and he keeps paper, janitorial supplies, smallwares and equipment out of purchases. Boxes are a real cost. They just aren’t food.

Here’s a week, as an illustration. You start with $3,000 on the shelves, buy $2,250 and end with $2,950. You used $2,300. On $8,000 in food sales, that’s a 28.8% food cost.

Now skip the count and just divide purchases by sales. Same week, 28.1%. Close enough. Then lock in a fixed cheese price and buy an extra $600 of mozzarella to stock up. Purchases over sales jumps to 35.6%, and you go hunting for a problem that doesn’t exist. The cheese is sitting in the walk-in, and only the count knows it. That’s Oven Scars’ arithmetic on made-up numbers, but the trap is real.

Theoretical food cost is what your recipe cards say you used

Restaurant365, which sells restaurant management software, defines theoretical food cost as what your food costs should be for a given period, based on current ingredient costs. To get it, multiply each item’s recipe cost by how many you sold, add it up and divide by food sales. You need a costed recipe card for every pie and size. We built one, line by line, in what it costs to make a pizza.

Mike Bausch of Andolini’s Pizzeria showed the logic in Pizza Today with burgers. Start with 100 buns and 100 patties, sell 68, and find 30 patties left, and you know two went missing “via theft, comp, void or waste.” Swap patties for pounds of cheese and that’s your whole variance report.

The gap is the number you can actually manage

Restaurant365 says best-in-class operators aim for variance “often around 1% or less,” and lists the usual causes: waste, over-portioning, theft and pricing inconsistencies. Bausch’s example in Pizza Today is a menu built to a 25% food cost that comes in at 30%, a five-point variance.

Put a dollar figure on it. In the illustration above, if theoretical is 26.5% and actual is 28.8%, the gap on $8,000 is about $180 a week, or about $9,400 a year. The NRA’s median counter-service restaurant kept 4.0% of sales before taxes in 2024. On $416,000 a year, that’s about $16,600. The gap eats more than half of it. As we laid out in the real cost of running a pizza shop, food and labor together decide whether you make money, and this gap is the part of food cost you control.

Each cause leaves a different fingerprint:

Your food cost percentage tells you money left the walk-in. The gap tells you which door it went out.

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Same night, same person, cheese first

The routine is boring on purpose. Bogacz told Pizza Today to count on the same day each week, typically after closing on your slowest day, like a Sunday, and that “the best counts are always if the same person is counting the same every single time.” Bausch also counts on Sunday night.

Start where the money is. Bausch says it makes more sense to nail down cheese before flour, and to go after the expensive items first. Check every delivery against the invoice as it comes in. Bogacz says counting on the spot protects you from miss-picks. Then post the results. In his words, “When employees know you’re watching the numbers, theft naturally decreases.”

Run the week, not the month. Peters’ preferred period is a week. If the gap opens on Tuesday, a monthly count won’t show it for three more weeks. Put your weekly food number next to labor in the prime cost calculator. For where it sits among the rest of your bills, see what a pizza shop costs to run every month.

Free cheat sheet: 15 pizzeria cost benchmarks on one page

Prime cost, labor, delivery and rent, each with its source and a blank for your shop’s number. Enter your email and the download opens right away.

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The limitation: there’s no published variance benchmark for pizzerias. The one-point figure comes from a software company describing restaurants in general, and the NRA’s medians include non-alcohol beverages and every kind of counter-service concept. Your theoretical number is also only as good as your recipe cards. If the cards still carry last spring’s cheese price, the gap you’re chasing may just be an old card.

Common questions

How do you calculate food cost percentage for a pizzeria?

Take what you had on the shelf at the start of the week, add what you bought, and subtract what's left at the end. That's what you used. Divide it by your food sales for the same week. Leave paper goods and cleaning supplies out of purchases.

What is a good food cost percentage for a pizza shop?

There's no single number. Toast puts pizzeria cost of goods around 20% of sales, the National Restaurant Association's median for counter-service restaurants was 32.4% in 2024, and one operator wrote in Pizza Today that his shop runs 26% overall.

What's the difference between actual and theoretical food cost?

Actual is what you really used, from your inventory count. Theoretical is what you should have used, from your recipe costs times what you sold. The gap is waste, heavy portions, theft and comps. Restaurant365, which sells restaurant software, says the best operators keep it around 1 point or less.

How often should a pizzeria take inventory?

Weekly, on the same night, with the same person counting. Two Pizza Today operators recommend Sunday night after close, or whatever your slowest night is.