By Heidi Macomber · July 25, 2026 (updated July 31, 2026)

Plate costing is the one number that tells you whether you're actually making money or just moving ingredients around. Here's how to do it right, what most owners get wrong, and why the number on your invoice is almost never the number you should be using.

What Is Plate Costing?

Plate costing is the process of figuring out what a single serving of a dish costs you to make. Not the menu price. Not what you charge the customer. The actual cost of every ingredient that ends up on the plate, calculated to the cent.

It sounds obvious. Most owners have never done it accurately.

They know what a case of chicken costs. They know what they sell a chicken sandwich for. What they usually don't know is the exact cost of the 5.3 ounces of cooked chicken, the bun, the two slices of cheese, the pickle, the sauce, and the paper boat it sits in. So they guess. And the guess is almost always low.

Plate costing replaces the guess with a number you can defend.

Plate Cost vs. Food Cost Percentage: Don't Mix These Up

People use "plate cost" and "food cost percentage" interchangeably all the time. They are not the same thing, and confusing them gets expensive.

Plate cost is a dollar amount. It's what one serving costs you to produce. A burger that costs you $1.82 in ingredients has a plate cost of $1.82.

Food cost percentage is a ratio. It's the plate cost divided by the menu price, expressed as a percent. Sell that $1.82 burger for $7 and your food cost percentage is 26%.

You need both. The plate cost tells you what the food is worth. The food cost percentage tells you whether your price is sane. But you can't calculate the percentage without the plate cost first. That's where this has to start.

The Plate Cost Formula

At its simplest:

Plate cost = (cost of every ingredient in the recipe) ÷ (number of servings the recipe yields)

The math is not hard. What's hard is getting the ingredient costs right, because the number on the invoice is almost never the number you should be using.

The Mistake That Quietly Wrecks Your Numbers

Here's where most plate costing falls apart. You buy a 40-pound case of chicken thighs for $1.89 a pound. Your recipe calls for 6 ounces of chicken per sandwich. So you multiply 6 ounces by $1.89 divided by 16, and you get $0.71 for the chicken.

That number is wrong.

It's wrong because you paid $1.89 per pound for raw, bone-in, skin-on thighs, but you're serving trimmed, cooked meat. Between trimming the fat and cooking off moisture, you lose roughly 30% of what you bought. To get 6 ounces of cooked, trimmed chicken on the plate, you had to start with about 8.5 ounces of raw product.

Your real chicken cost on that sandwich is closer to $1.00, not $0.71. That 29-cent gap, multiplied across every chicken sandwich you sell in a year, is the difference between a profitable item and one that's quietly losing you money.

This is the AP vs. EP problem, and it's the single most common error in plate costing. AP (As Purchased) is what you paid for. EP (Edible Portion) is what actually makes it onto the plate. If your costing spreadsheet uses the AP price and your recipe calls for a trimmed or cooked amount, your plate costs are too low and you don't know it.

How to Cost a Plate, Step by Step

Let's cost out a chicken sandwich from scratch. Same method works for a taco, a latte, a brownie, or a bowl of ramen.

Step 1: List every ingredient that touches the plate

Not just the obvious ones. The bun, the chicken, the cheese, the pickle, the sauce. But also the butter you grill the bun with, the spice rub, the cooking oil if you fry. If it goes in or on the dish, list it.

Don't forget packaging if you sell to-go. That paper boat, the foil, the napkin, the bag. For a food truck or delivery-heavy operation, packaging is part of what it costs to serve that plate.

Step 2: Convert each ingredient to its true per-portion cost

For each ingredient, you need two numbers: what you pay per unit, and how much of it is in one serving.

This is where unit conversions bite people. You buy flour by the pound but measure it by the cup. You buy oil by the gallon but pour it by the tablespoon. You buy cheese by the case but portion it by the slice. Get the conversion wrong and your cost is wrong.

For the chicken sandwich:

Step 3: Price against the cost

If your plate cost is $2.01 and you sell the sandwich for $9, your food cost percentage is 22%. That's healthy for a food truck or quick-service spot.

If you sell it for $7, you're at 29%. Still workable, but tighter, and there's less room for the labor, rent, and everything else that has to come out of the remaining $4.99.

The point is that without the $2.01 number, you're picking a price and hoping. The math won't save you on its own, but at least you'll know whether you're in the black or bleeding on every plate.

The Three Plate Costing Errors I See Most

1. Using the invoice price instead of the EP cost. Covered above. This is the big one. Proteins, produce, anything you trim or cook loses 15-50% of its weight before it hits the plate. If your costing tool doesn't account for yield, your numbers are fiction.

2. Forgetting the small stuff. The sauce, the garnish, the cooking fat, the seasoning. Each one is pennies. Add them up across 200 covers a day and it's real money. I've seen operators "cost" a plate and leave out the $0.15 of sauce because it felt too small to bother with. On a thousand plates a week, that's $150 you didn't account for.

3. Not recalculating when supplier prices change. You costed the menu in January. Your distributor raised chicken 18% in March. If you didn't update the recipe, you're still pricing against January costs. Check your top-five ingredients every month. Prices move. Your plate costs need to move with them.

How Often Should You Recalculate?

Full menu recosting every quarter is a reasonable rhythm for most small operations. Monthly for your top sellers and any protein-heavy dish. Anytime a supplier hands you a price increase, update that ingredient the same week.

If you're adding a new menu item, cost it before it goes on the menu. Not after you've been selling it for a month at a price you picked off the top of your head.

What Good Software Does Here

You can do all of this in a spreadsheet. Many owners do. It works until your menu grows past a dozen items, or until a supplier changes a price and you have to update it across fifteen recipes.

Percy Plate handles the parts that make manual plate costing painful:

• Ingredient costs with automatic unit conversions, so you can buy by the pound and recipe by the cup without doing the math yourself
• Yield and trim adjustments so your plate costs reflect what actually lands on the plate, not what came off the truck
• Recipe-level costing that updates across your whole menu when a single ingredient price changes
• Food cost percentage shown live against your menu price, so you see immediately when an item drifts out of your target range

The goal isn't to have prettier spreadsheets. It's to stop guessing at the one number that decides whether each plate you serve is making you money or costing you money.

Start With One Plate

If you've never done this properly, don't try to cost your whole menu today. Pick your best-selling item. List every ingredient. Look up what you actually pay per unit. Account for the trim and cooking loss on any protein. Add it all up.

Compare that number to what you charge for it.

That first comparison is usually a punch in the gut. It's also the most useful five minutes you'll spend on your business this week.

Plate costing isn't a ritual you do once a year and forget. It's the number that decides whether each plate you serve is making you money or quietly costing you money. If you don't know it, you're running the business blind.

Related Guides

• Recipe Costing 101: How to Cost Out Any Recipe for Profit — The recipe costing foundation
• How to Cost a Plate of Food: The Complete Guide — The complete plate costing guide
• Cost Per Portion: The Formula Every Food Business Needs (With Examples) — Portion-cost formula with examples
• Burger Cost Calculation: How Much a Burger Actually Costs You to Make — Worked burger costing example

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