How to Calculate Food Cost Percentage

Successful restaurant operators strive to deliver great guest experiences while maximizing revenues and minimizing costs — especially food cost percentages.

Profitable restaurants are able to make informed decisions based on their suppliers’ cost of foods. This is easier said than done given the ingredient cost fluctuations across the restaurant supply chain.

It's critical that restaurant owners, operators, and managers consistently track food cost percentages and the right mix of technology to take control of costs and lay the groundwork for optimizing restaurant profits. 

Read on to understand the numbers behind the food cost percentage formula. See how to calculate food cost percentage manually. And learn more about the benefits of automated restaurant food cost control platforms.

Why is food cost percentage so important?

Restaurant food costs are a major part of overall operating costs — with labor costs being the other component.

The combination of food costs and labor costs is also know as your prime costs, or variable costs. This is opposed to fixed cost, which include rent or mortgages, insurance, and other such costs.

Restaurant food cost percentages help operators to track overall costs and individual ingredient prices — just like Toast's ingredient price series does with egg prices, chicken wing prices, avocado prices, and more.

Monitoring restaurant ingredient cost fluctuations can empower operators to make data-driven decisions for optimized spending that helps foster profitability.

Let’s say that Josephine runs a successful restaurant that serves 350 customers per day. If she doesn’t pay attention to her food costs, and her menu items are incorrectly priced by $0.75, Josephine could lose nearly $100,000 in revenue per year.

(350 customers x 365 days in a year) x $0.75 

127,750 customers per year x $0.75 = $95,812.50

Even seemingly subtle pocket change can quickly add up — and that's only the case if your costs are nearly locked in. If you have tons of room to slice away food costs, the savings could be a major boost to your bottom line.

Calculating food cost percentage and cost of goods sold down to granular levels can unlock key metrics and insights.

Recipe costing can show you your profit margins on individual portions for your recipe. 

And if you take it further by calculating plate costs, you can combine recipe portions to uncover the exact impacts of each menu item. 

For example, Underbelly Hospitality was able to cut about three percent off of food costs across their operation — with the help of xtraCHEF by Toast — equating to over $300,000 in annualized savings.

Here are three benefits to calculating restaurant food cost percentage.

1. Spend and earn smarter

By pricing each menu item based on food cost percentage and COGS, you can check that each menu item fits within your food cost margins. From there, you’ll know which menu items are most profitable and, in turn, which items to promote.

2. Efficiently engineer your menu

With food cost percentage data integrated in your restaurant POS system, you can update menu items that are no longer profitable. Menu engineering based on food cost percentage will give you the insights you need to implement a favorable menu pricing strategy.

3. Better understand how the food supply chain impacts costs and profitability across the restaurant industry

The restaurant supply chain can be fully of turbulence. Keeping an eye on farming trends and even international trade negotiations can an important part of understanding and managing inventory costs. For example, avocado prices spiked 58% in July 2023. Having some sort of food cost calculator to monitor such fluctuations can be essential to mitigate against the supply chain turbulence.

Food cost percentage formula

Food cost percentage is calculated by taking the cost of goods sold and dividing that by the revenue or sales generated from that finished dish. The cost of goods sold is the amount of money you’ve spent on ingredients and inventory in a given period — we’ll show you how to calculate that, too.

It’s nice to know if individual menu items are profitable or not, as we’ll explain below. But it’s critical to know if your entire business is on track for success.

To start, look at your weekly inventory. 

1. List all the food supplies you received at the start of the week. Many inventory management systems work on tablets or handheld devices, so you can walk around back of house checking off items like you would on a clipboard.

2. Add together the dollar value of each item. How much did you pay for each box of chicken in your back of house?

3. Track your purchases. Were there any other purchases that you made within the week, after beginning inventory?

4. Take inventory again at the beginning of next week. Follow the same process. Many recommend a shelf-to-sheet system, where your inventory tracking system is set up like your back-of-house is.

5. Add together total food sales per shift. Many POS systems with restaurant analytics can provide you with this information automatically.

6. Calculate actual food cost for the week using the following food cost percentage formula: 

Food Cost Percentage = (Beginning Inventory + Purchases – Ending Inventory) ÷ Food Sales

Check out the example below to see this food cost percentage formula in action:

Beginning Inventory = $15,000

Purchases = $4,000

Ending Inventory = $16,000

Food Sales = $10,000

Food Cost Percentage = (15,000 + 4,000 – 16,000) ÷ 10,000

Food Cost Percentage = 3,000 ÷ 10,000

Food Cost Percentage = 0.30 or 30%

Quick Tip: Is your cost dramatically high or low? Double check your food cost percentage formula to make sure you’ve counted each item correctly, entered the right unit, and accounted for each purchasing invoice.

Determining your ideal food cost based on strategic menu prices

A typical food cost percentage benchmark is 28-32% in many full-service and quick-service restaurants. 

Of course, there is no exact “good” percentage — it varies depending on the type of food served and costs of operating the restaurant. To figure out what percentage is the best for your restaurant, you’ll need to calculate your ideal food cost percentage.

Restaurateurs can optimize their restaurant costs by calculating their ideal food cost. Ideal food cost tells restaurant operators what their optimal food cost rate should be based on total food costs and total sales — removing waste, discounts and comps, and other factors that increase restaurant COGS.

Calculating your restaurant's ideal food cost percentage

Here's how to calculate the ideal food cost percentage for your restaurant: 

Ideal Food Cost Percentage = Total Cost Per Dish ÷ Total Sales Per Dish 

For this percentage to be the most helpful, you need something to compare it to — and ensure that your restaurant is on track. 

You can do so by comparing your actual food cost with your ideal food cost. In an ideal world, there would be no food waste or theft in your restaurant.

The calculation for ideal food cost percentage doesn’t take into account your beginning and ending inventories. Instead, it accounts for the total costs and sales associated with each dish or menu item. 

First, we have you enter the type of concept you run and in what area. Then, it shares the five most popular items (and their price breakdown) on similar restaurant menus in your area. Then, you’ll be able to dive into these menu items to calculate each item’s food cost, the cost per pound and/or cost per cup for each ingredient.

You can also use the tool to create custom menu items and determine the ideal price for them. So play around with it and start brainstorming on how you can improve your food cost percentage.

How to calculate food cost per serving (or food cost per menu item)

Food cost per dish = Food cost of ingredients x Weekly amount sold

Total sales per dish = Sales price x Weekly amount sold

Now that you’ve calculated your food cost per dish, here’s the formula for calculating ideal food cost percentage: 

Ideal food cost percentage = Total cost per dish ÷ Total sales per dish

Check out the example below to see this ideal food cost percentage formula in action:

Total cost per dish = $2,500

Total sales per dish = $10,000

Ideal food cost percentage = 2,500 ÷ 10,000

Ideal food cost percentage = 0.25 or 25%

The ideal food cost percentage comes out to 25% and the actual food cost percentage comes out to 30%, in the examples shared above. 

Now we know there’s an extra 5%, either due to waste, theft, or additional purchasing. Ultimately, you want your actual food cost to match or even be below your ideal food cost.

How to price your menu with food cost percentage in mind

Your menu prices need to meet the needs of your bottom line but also the needs of your target market. 

Here's a formula you can use:

• Find plate cost by conducting recipe costing and then adding up the portion costs for each recipe that makes up the dish.

• Divide this by a target food cost percentage. You can choose what this percentage should be and move it around as you wish.

• Keep menu prices simple and round up or down.

When you’re pricing your menu, you should also consider your local market. If demand is high for a particular menu item in your area, you may want to sell it for more or less, depending on what the market can bear. 

You’ll also want to consider labor costs, rent, overhead costs, and more when pricing your menu.

How xtraCHEF by Toast can help you stop getting cooked by costs

COGS is a great high-level, actionable measure for your food costs, though restaurants may benefit from a more precise, detailed overview of their spending. 

Even with our formulas and synopsis above, manually tracking restaurant food costs has typically been time-consuming and error prone. 

Food cost control comes down to tracking supplier price fluctuations, which means capturing product prices, units of measure, and other critical details from all your invoices — that's where xtraCHEF by Toast comes into the picture.

xtraCHEF can help take the tedious work of invoice processing off your plate. With automated invoice processing, you can simply snap, scan, and upload your invoices. The platform extracts all the critical line-item details, passing along important information into your accounting system while diving into individual ingredient costs within xtraCHEF.

You can use this clean, consistent data on product prices to start making more informed decisions.

With precise recipe costs that update with each new vendor order, you can ensure your food costs and menu prices work together to achieve your target profitability. 

Schedule a demo to speak with a product specialist today about the potential benefits of Toast and xtraCHEF for your operation.