How to Calculate Food Cost Percentage (and Hit a Healthy Target)
Food cost percentage is the single number that tells you whether your kitchen is making money. Here is how to calculate it correctly, what a healthy target looks like, and where the leaks hide.
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Most restaurant owners can tell you their sales to the rupee but hesitate when asked what their food cost percentage was last month. That is a problem, because food cost percentage is the clearest single signal of whether the kitchen is actually making money. A busy restaurant with an uncontrolled food cost can lose money on every table; a quieter one with tight costs can be comfortably profitable.
Here is how to calculate it properly, what target to aim for, and where the money usually leaks.
The formula
Food cost percentage is the cost of the ingredients you used, expressed as a share of the food sales they produced:
**Food Cost % = (Cost of Goods Sold ÷ Food Sales) × 100**
The part people get wrong is "cost of goods sold." It is not what you spent on purchases this month — it is what you actually *consumed*. You calculate it from your inventory:
**COGS = Opening Inventory + Purchases − Closing Inventory**
So if you started the month with ₹80,000 of stock, bought ₹2,20,000 more, and finished with ₹70,000 still on the shelf, you consumed ₹2,30,000. Against food sales of ₹7,00,000:
(2,30,000 ÷ 7,00,000) × 100 = **32.9% food cost.**
Skipping the inventory step and just dividing purchases by sales is the most common mistake, and it quietly hides whether you are over-buying or building up dead stock.
What is a healthy target?
There is no universal "correct" number — it depends on your concept. A fine-dining restaurant with expensive proteins runs differently from a QSR built on high volume. That said, a commonly cited healthy band for full-service restaurants is roughly **28–35%**. Below that and you may be under-portioning or over-charging relative to your market; well above it and margin is leaking somewhere.
Treat the band as a reference, not a rule. What matters more than hitting a magic number is watching your *own* trend month to month and reacting when it drifts.
Ideal cost vs actual cost: the variance that matters
There are two food cost numbers, and the gap between them is where the real insight lives:
- **Ideal (theoretical) food cost** is what your dishes *should* have cost, based on your recipes and the number of each dish you sold. If your butter chicken costs ₹90 in ingredients and you sold 200 of them, that is ₹18,000 of ideal cost.
- **Actual food cost** is what your inventory says you really consumed.
When actual runs meaningfully above ideal, the difference is not going onto plates. It is going into over-portioning, spoilage, trim waste, incorrect billing, or theft. Chasing that variance is far more productive than staring at the headline percentage.
Where the leaks usually are
Five places account for most food cost problems:
1. **Portioning.** Without a standard portion (a scoop, a ladle, a scale), the same dish costs a different amount every time it leaves the pass. Consistency is cheaper than generosity you did not price for.
2. **Purchasing.** Buying without comparing suppliers, or without checking that delivered weights match invoiced weights, leaks money before anything is cooked.
3. **Waste and spoilage.** Over-ordering perishables, poor stock rotation (use oldest first), and trim that could be used elsewhere.
4. **Unbilled food.** Staff meals, comps, and "adjust it later" tickets that never get adjusted — food that left inventory but never appeared in sales.
5. **Recipe drift.** The dish slowly gets more generous than the costed recipe, so ideal cost and reality quietly separate.
Make it a monthly habit
Food cost percentage is only useful if you calculate it consistently. Take inventory on the same day each month, compute COGS from the formula above, and compare the trend. If you have a POS that deducts ingredients as dishes are sold, you can watch ideal cost in near real time and only need the physical count to true it up — but even a disciplined manual count once a month beats not knowing at all.
The goal is not to obsess over a single percentage. It is to know your number, know your trend, and catch the drift before a month of small leaks becomes a quarter of lost profit.
About Soumya Srivastava
Founder
Soumya is the founder of Antena. A close interest in the day-to-day realities of running hotels and restaurants, paired with a technical background, shapes how she approaches hospitality software — starting from the operational problem rather than the feature list. She writes about the business thinking behind smoother front-desk, housekeeping, and F&B operations.
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