User Guide & Analysis: Food Cost Percentage
Master your restaurant's profitability by understanding and optimizing food cost percentage, prime cost, and inventory metrics.
Overview
Food cost percentage is the ratio of your food costs to your total food sales revenue. It tells you exactly how much of every dollar you earn goes back into buying the ingredients to make your food. Monitoring this metric is essential for pricing menus, controlling waste, and ensuring long-term profitability in the notoriously tight-margin restaurant industry.
Core Formulas
1. Cost of Goods Sold (COGS)
Before you can calculate your percentage, you need to know exactly how much you spent on food that was actually used (or wasted/stolen) during a period. This is COGS.
COGS = Beginning Inventory + Purchases - Ending Inventory2. Overall Food Cost Percentage
This is the big-picture view of your restaurant's performance for a week, month, or year.
Food Cost Percentage = (COGS ÷ Total Food Sales) × 1003. Ideal (Per-Item) Food Cost Percentage
This calculates how much a specific dish costs to make compared to its menu price. It assumes zero waste.
Item Food Cost % = (Total Cost of Ingredients ÷ Menu Price) × 1004. Ideal Menu Price
If you know your ingredients cost $5, and you want to maintain a 28% food cost, how much should you charge?
Menu Price = Total Ingredient Cost ÷ Target Food Cost Percentage (as decimal)Step-by-Step Instructions
- Take Beginning Inventory: Count everything in your walk-in, freezers, and dry storage at the start of the week/month. Value it based on what you paid.
- Track Purchases: Add up all food invoices for deliveries received during that same period.
- Take Ending Inventory: Do another full count at the exact end of the period.
- Determine Sales: Pull a report from your POS system for food sales only (exclude taxes, alcohol, merchandise) for that exact period.
- Calculate: Plug these four numbers into our calculator tool.
What is "Prime Cost"?
While food cost is important, it's only half the battle. Prime Cost is the total of your Cost of Goods Sold (Food + Beverage) AND your total Labor Costs (wages, taxes, benefits).
A healthy restaurant generally aims for a Prime Cost of 60% or less. For example, if your food cost runs high (35%), you need to keep labor tight (25%) to remain profitable.
Strategies to Reduce Food Cost Percentage
- Portion Control: Ensure cooks are using scales and standard measuring tools, not eyeballing.
- Reduce Waste: Track spoilage and mistakes. Repurpose trim (e.g., use vegetable scraps for stock).
- Menu Engineering: Promote items with high profit margins. If a dish is too expensive to produce, consider swapping ingredients or raising the price.
- Negotiate with Vendors: Lock in prices, buy in bulk (if it won't spoil), or shop around for better purveyors.
- Consistent Inventory: Do inventory weekly, not monthly. It's much easier to spot a leak (theft or massive waste) in 7 days than in 30.