Quick answer: Restaurant COGS is the cost of ingredients consumed during a period. Calculate it as opening inventory plus purchases minus closing inventory; divide COGS by food sales to calculate food-cost percentage.
Controlling COGS is the most direct way to protect profit.
"COGS" sounds like accountant-speak, but it's just a precise name for the thing every restaurant owner already worries about: how much the food cost to make. This guide explains it plainly, shows how to calculate it, and connects it to the numbers you already track. TajerGo, the UAE-built restaurant operating system that combines POS, inventory, purchasing, Khata, AI insights, and VAT configuration in one platform, tracks COGS automatically so it's a live number, not a year-end surprise.
What is COGS for a restaurant?
Cost of goods sold (COGS) is the cost of the ingredients you actually used to make the food you sold in a period. It excludes labour, rent, and overheads - it's purely the cost of the raw materials that became the dishes customers bought. For most restaurants it's the largest controllable expense, which is exactly why it's worth understanding and managing.
| Include in restaurant COGS | Keep outside ingredient COGS |
|---|---|
| Food and beverage ingredients consumed | Front-of-house and kitchen labour |
| Packaging directly consumed with orders | Rent, utilities, and marketing |
| Ingredient wastage reflected in stock movement | Equipment purchases and loan payments |
| Inventory-count adjustments supported by records | General administration unrelated to food production |
Use the same classification every period. Moving labour or overhead into ingredient COGS makes the comparison misleading even when the arithmetic is correct.
How do I calculate COGS?
The standard formula uses inventory movement:
COGS = Opening inventory + Purchases − Closing inventory
You take what you started the period with, add everything you bought, and subtract what's left at the end. The result is what you consumed - your COGS.
Worked example for a month:
| Item | AED |
|---|---|
| Opening inventory | 20,000 |
| Purchases | 35,000 |
| Closing inventory | 25,000 |
| COGS | 30,000 |
If food sales were AED 100,000, food-cost percentage would be AED 30,000 ÷ AED 100,000 × 100 = 30%. A connected restaurant inventory workflow supplies the opening, purchase, and closing-stock records; profit reporting then makes the period-to-period result easier to review.
How is COGS different from food cost percentage?
They're directly related:
- COGS is an amount in dirhams (e.g. AED 30,000).
- Food cost percentage is COGS expressed as a share of sales (COGS ÷ sales × 100).
So COGS is the raw cost; food cost percentage is that cost made comparable. If COGS is AED 30,000 on AED 100,000 of sales, your food cost percentage is 30%. You track COGS to know the dirhams; you track the percentage to benchmark efficiency.
How does COGS relate to gross profit?
Gross profit is what's left after COGS:
Gross profit = Sales − COGS
On AED 100,000 of sales with AED 30,000 COGS, gross profit is AED 70,000 (a 70% gross margin). This is the money available to cover labour, rent, utilities, and ultimately your net profit. Lower your COGS without losing sales, and gross profit rises dirham-for-dirham.
Why is COGS the number to control?
Because it's both large and controllable. You can't easily cut your rent, but you can cut waste, tighten portions, and manage supplier prices - all of which move COGS. A small percentage improvement on your biggest controllable cost flows straight to the bottom line. That's why operators who watch COGS closely tend to be the profitable ones.
How TajerGo helps
TajerGo tracks COGS automatically by holding your inventory, purchases, and recipes in one place - so opening stock, purchases, and closing stock combine into a live COGS figure instead of a manual month-end calculation. The Profitability report breaks COGS and gross profit down by item, category, and branch, and Expense tracking captures other costs so your true profit number is real, not a guess. TajerGo Ghost Inventory highlights idle stock using recorded sales activity, days idle and estimated capital tied up. Investigate physical shortages separately with counts and movement records. You manage your biggest controllable cost continuously. Availability varies by plan. Review the pricing page for current scope.
Frequently asked questions
What is COGS for a restaurant?
COGS (cost of goods sold) is the total cost of the ingredients used to produce the food you sold in a period. It excludes labour and overheads and is usually the biggest controllable expense for a restaurant.
How do I calculate COGS?
Use opening inventory plus purchases minus closing inventory. That gives the cost of the ingredients you actually consumed in the period.
What's the difference between COGS and food cost percentage?
COGS is an amount in dirhams; food cost percentage is COGS expressed as a share of sales (COGS ÷ sales × 100). One is the raw cost, the other makes it comparable across periods and concepts.
How does COGS affect profit?
Gross profit equals sales minus COGS, so lowering COGS without losing sales increases gross profit dirham-for-dirham. As the biggest controllable cost, COGS is the most direct lever on profitability.
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