Food Cost Variance Calculator

Food cost variance is the gap between actual food cost, from your inventory counts and purchases, and theoretical food cost, which is what the items you sold should have cost according to their recipes. A small gap is normal; a large or growing one is money leaving through waste, portioning, yields, receiving or theft.

Food cost variance formulas

• Actual food cost %: (beginning inventory + purchases − ending inventory) ÷ food sales × 100.
• Theoretical food cost %: sum of (recipe cost × number sold) for every item ÷ food sales × 100.
• Variance: actual food cost % − theoretical food cost %, or the same in dollars.
• Unexplained variance: variance − logged waste − yield shortfall − comps and staff meals − known over-portioning.
• Item usage variance: actual usage (beginning + received − ending) − theoretical usage (portions sold × recipe amount).

How to calculate food cost variance

1. Get actual food cost. Count inventory at the start and end of the period, add purchases in between, and subtract the ending count.
2. Get theoretical food cost. From your POS, take how many of each item sold, multiply by each recipe’s plate cost and add them up.
3. Compare them. Divide both by food sales and subtract theoretical from actual for the gap in points.
4. Take out what you can explain. Subtract logged waste, yield tests below standard, comps, staff meals and over-portioning you have measured.
5. Chase what is left item by item. Run usage variance on your highest-cost items to find where the rest goes.

Worked examples

Whole kitchen, one month: Food sales are $40,000. Counts and invoices put actual food cost at $13,400 (33.5%); recipes times items sold give $12,000 (30.0%). The 3.5-point gap is $1,400. Waste logs account for $480, yield tests below standard for $520 and portion spot checks for $250, leaving $150 unexplained. Over a year that is $16,800 of variance, of which $1,800 nobody can explain yet.

One item, one week: The kitchen sold 140 ribeyes with a 14 oz spec, so theoretical usage is 140 × 14 oz = 122.5 lb. Counts show 45 lb at the start, 120 lb received and 34 lb at the end: 131 lb used. That is 8.5 lb, or 6.9%, more than the sales explain. At $14 a pound it is $119 this week, about $6,200 a year, on one item.

Where food cost variance comes from

The usual suspects, roughly in the order worth checking:

• Yield: cuts and produce trimming below what your recipe costs assume, often after a supplier or spec change. Run a butcher’s yield test.
• Waste: spoilage and prep waste thrown out without being recorded, so it shows up as variance instead. Use a food waste log.
• Portioning: plates leaving the line heavier than the recipe card. Re-cost the recipe at the real portion.
• Receiving: short deliveries, substitutions and price changes signed for at the door. Use a receiving log.
• Theft and unrecorded use: staff meals, comps and product leaving without a record. How to track inventory theft.

How much variance is normal?

Some variance is unavoidable: trim varies, cooks taste, counts round. Many operators aim to keep total variance under about 2 points of food sales and a few percent on individual items. Treat those as rules of thumb; a gap that keeps growing matters more than any single number.

For the full method, with how to calculate theoretical food cost from your POS, read our guide to theoretical vs actual food cost.

Food cost variance FAQ