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Food cost looks fine. Do sales cover labor and overhead?
The food cost line can look comfortable while the month still fails to cover expenses. That is not a contradiction: ingredients are only one part of running a restaurant. A percentage on a plate cannot pay rent by itself.
Use a consistent period, separate variable costs from included fixed costs, and keep unknown costs visible. A restaurant break-even sales calculation is a conditional model of cost coverage, not a forecast that those sales will happen.
Fictional examples. Real decisions need your own data.
Every recipe, price, quantity, date and business situation here is made up for learning. The calculators use stated assumptions and do not forecast demand. Nothing is saved to your workspace or sent to a register.
The fictional month behind the calculator
Assume $60,000 in sales, $18,000 in ingredient costs and $3,600 in other variable costs such as included fees and packaging. Together the variable costs are 36% of sales. Included fixed costs total $40,000: $22,000 assumed salaried labor, $8,000 rent and $10,000 other overhead.
These amounts and classifications are invented. Actual payroll can contain fixed, variable and mixed costs. Editing the total below does not preserve those original subcategory amounts.
From example to decision
Explore the scenario in the free demo or get started with your own business documents.
Change sales or costs. See the coverage gap.
Contribution after variable costs
$38,400.00Sales available to cover included fixed costs.
Result after included costs
−$1,600.00Only the costs in this model are included.
Modeled break-even sales
$62,500.00Type or click +/−. Steps: $2,500 sales, 1 percentage point, $1,000 fixed costs. Positive sales required; explicit zero costs allowed. Sales after assumed refunds/discounts, excluding sales tax. All costs must be on a consistent basis and period.
What the break-even formula assumes
Contribution = sales × (1 − variable cost share). The modeled result subtracts the included fixed costs from that contribution. Break-even sales = included fixed costs ÷ (1 − variable cost share), provided the contribution share is positive.
The original month has a 64% contribution share. $40,000 ÷ 0.64 gives $62,500. This assumes that costs behave the same way at that sales level. Extra shifts, capacity limits or a different sales mix can change that relationship.
Prime cost is useful. It is not the whole result.
Prime cost combines food and labor costs. Rent, other overhead and relevant additional costs can still sit outside it. Avoid counting the same labor twice when moving from a prime cost view to a complete model.
Likewise, invoice purchases are not automatically the ingredient cost of the same period’s sales. Inventory timing, waste and the accounting basis can matter. This page does not calculate inventory, tax, financing or cash flow.
Before you use this in a decision
Click to work through the assumptions. This checklist stays in this page only.
Inspect the cost boundary in Restozia
Use supported sales and cost documents, then review the recognized drafts and the period they describe. The full demo’s next cost view lets you inspect how additional included costs change a prepared fictional scenario. It does not verify your restaurant’s full accounts.
The full demo uses its own prepared fictional menu and figures. Your calculator inputs are not transferred. Results remain scenarios, not a forecast.
Questions restaurant operators ask
Open a question to see the explanation.
What is the difference between food cost and prime cost?
Food cost concerns ingredients on the stated accounting basis. Prime cost combines food and labor. Neither alone confirms the result after every restaurant expense.
How do I calculate break-even sales for a restaurant?
For this simple model, divide included fixed costs by the contribution share: one minus all included variable costs as a share of sales. The formula needs a positive contribution share and consistent assumptions. It does not prove a feasible sales target.
Should I enter all labor as a fixed cost?
No universal classification is assumed. Salaried, hourly and overtime arrangements can behave differently. Identify what belongs in each side of your model for the period and scenario, without double counting.
What if a cost is missing?
Keep the known amounts visible and mark the gap. The unknown-cost switch retains the known partial remainder but withholds a complete break-even threshold. An unverified cost cannot safely be treated as zero.
Why can profit differ from cash in the bank?
Timing of sales, payments, purchases, prepayments and other movements can differ from a period result. This calculator is a cost-coverage model, not a cash balance, tax computation or amount available to withdraw.
What does the modelled break-even point show?
It shows the revenue needed to cover the included costs under the stated assumptions. Demand, sales mix, capacity, omitted costs and changing cost behavior can alter the outcome.
Trace the cost before you model the whole month
If the ingredient amount is uncertain, start with a recipe cost. If the supplier sent a new invoice price, isolate its effect before attributing the entire monthly gap to purchasing.