Restaurant profit margin calculator

Net margin is what is left of each sales dollar after every cost, before income tax. Prime cost is food and drink plus labor, the two largest costs and the two you can change this month.

Worked example, the calculator’s starting numbers, which are ours for illustration: $80,000 in sales, $26,000 of food and drink, $28,000 of labor. Prime cost is $54,000, or 67.5%. Take off $6,400 of occupancy and $16,000 of everything else, and $3,600 is left: a 4.5% margin.

Bringing that prime cost down to 65% would add $24,000 a year at the same sales. That is the point of the second number: at these sales, one percentage point is worth $9,600 a year.

Use a full month, and count inventory at both ends if you can. Purchases alone swing with delivery dates, which makes one month look better and the next worse for no real reason. Our food cost calculator does that part.

Margins are thinner than most people outside the trade expect. These are medians from the National Restaurant Association’s survey of more than 900 operators, for 2024:

Size matters too. Full-service restaurants with $2 million or more in sales reported a median of 4.3%, and those below $2 million just 1.1% (NRA). The Association says these figures are not standards or goals for any one restaurant, so read them as context, not a grade.

For prime cost, Toast suggests 60% of sales or lower as a benchmark (Toast). The Association’s median for limited-service restaurants was 65 cents of every sales dollar (NRA). It published no full-service figure in these articles, and adding two medians together does not give a third, so we show none rather than guess.

The labor lines are the ones to look at. Full-service operators who made a loss ran labor more than eight points higher than those who made a profit, more than the whole typical margin.

1. Prime cost over 65%? Start there, because it is the biggest pool. Compare labor hours with sales by daypart, and cost your top ten sellers.
2. Prime cost fine, margin thin? Look at “everything else”. Delivery commissions often sit here unnoticed; the delivery commission calculator shows what they come to in a year.
3. Costs fine, sales low? Rent and salaried labor don’t fall with sales, so a slow month hurts margin more than any recipe does. Then the job is more guests, which our restaurant marketing guide covers.
4. Paying yourself nothing? Add a fair wage for your hours and run it again before deciding the business is healthy.

This is a quick operating check, not accounting or tax advice. Your accountant’s statements are the ones to rely on for decisions about tax or borrowing.