Contribution Margin

Restaurant Contribution Margin: What Each Dish Leaves Behind

Direct answer

Contribution per dish = Selling price – Variable cost of that one sale. In the worked example below, a $24.00 herb pasta with $8.00 of variable cost leaves $16.00 (66.7%), or $1,280 across 80 orders a week.

Chef plating pasta during dinner service with a dish cost sheet nearby
Illustrative stock photo for the herb-pasta worked example. Photo: Luca Luperto / Pexels.

Key points

  • Food-cost % tells you what a dish consumes. Contribution tells you what it leaves to pay everything else.
  • Two dishes can share 28% food cost but leave very different dollars. Price the dollars, not just the percent.
  • Sort the menu by weekly contribution — contribution dollars times weekly sales — not by margin % alone.
  • Fixed costs do not go in dish contribution. Contribution is not net profit.

What to do next

  1. 1Enter 5 dishes in the free workspace with price, ingredient cost, and weekly sales.
  2. 2Add the delivery commission or packaging variable cost where it applies to the order type.
  3. 3Sort by weekly contribution, not just margin %.
  4. 4Treat high percentage with low volume as a Puzzle: reposition or describe it better.
  5. 5For low contribution dollars with high volume, review price or portion first.
  6. 6Verify with the food-cost percentage and profit margin calculators before editing the menu. Full 50-item scenarios and exports are Pro only.

Worked example

Herb pasta — illustrative example with assumptions shown. Price $24.00. Ingredients from recipe: $6.40. Variable packaging/commission for this order type: $1.60. Variable cost = $8.00. Contribution = $24.00 – $8.00 = $16.00. Contribution margin = $16.00 ÷ $24.00 = 66.7%. Food-cost % for comparison = $6.40 ÷ $24.00 = 26.7%. At 80 orders a week: weekly contribution = $16.00 x 80 = $1,280.

Retail vs restaurant

In the Lightspeed retail context, contribution is SKU price minus variable merchandise cost. Restaurants start from the same idea but add four things.

First, portion yield and waste per plate. Second, order-type cost: dine-in versus delivery commission and packaging. Third, frequency: weekly sales times contribution decides menu position. Fourth, menu engineering: Stars, Plowhorses, Puzzles, and Dogs use contribution plus popularity, not food-cost % alone.

Do not apply retail markup rules directly to plates.

What not to do

Do not cut a high-contribution-dollar workhorse because its percentage looks low.

Do not raise a price without re-checking the sales assumption.

Fixed costs do not go in dish contribution.

Sources

Cited for topic verification only; the example, math, and method above are original. First observed September 11, 2026.

See what your top 5 leave behind

Your calculation stays in your browser without signup. Five dishes are enough to prove the math. Upgrade when you need the whole menu.

Open the free workspaceCheck food-cost %

Free calculators included. Full 50-item scenarios and exports are Pro only.

Deeper tools and guides

Food Cost Percentage Calculator

Quick calculator for item-level and menu-level food cost checks.

Restaurant Profit Margin Calculator

See whether gross profit and menu mix are carrying the business.

Plate Cost Calculator

Check whether every dish is earning its place on the menu.

Restaurant Break-Even Calculator

Work out the sales volume needed to cover fixed costs.