Ever wonder what you should actually charge for that amazing dish you perfected at home? Many restaurant owners guess at their cost prices, unknowingly selling portions at a loss. Here's how to calculate the exact cost price of every homemade creation before it hits your menu.
Why calculating cost price matters so much
A dish that tastes incredible at home can drain your profits in the restaurant. Not because customers don't love it, but because you've underestimated what it costs to make. Every portion sold below actual cost price bleeds money from your business.
⚠️ Note:
Home cooking lets you toss in whatever's available. Restaurant costing means weighing every gram against your bottom line.
Write down every ingredient and exact amounts
List everything that touches the plate. Don't skip the "little" stuff like spices, cooking oil, butter, or that sprig of parsley. These seemingly minor costs add up fast.
💡 Example pasta carbonara:
- Pasta: 120 grams
- Pancetta: 40 grams
- Eggs: 2 pieces (egg yolk)
- Parmesan: 30 grams
- Olive oil: 5 ml
- Black pepper: pinch
- Parsley: garnish
Find your supplier's actual prices
Use your supplier's prices, not what you'd pay at the grocery store. Commercial ingredients cost less per kilo but require bigger orders. Double-check if you're looking at per-kilo or per-unit pricing.
- Meat and fish: price per kilo
- Vegetables: sometimes per kilo, sometimes per unit
- Dairy: price per liter or kilo
- Spices: price per 100 grams or per jar
Calculate cost per portion for each ingredient
Most kitchen managers discover too late they've been hemorrhaging money on portions. For each ingredient: (quantity per portion ÷ total quantity) × purchase price
💡 Example calculation:
Pancetta: €18.50 per kilo, you use 40 grams
40 grams ÷ 1000 grams × €18.50 = €0.74 per portion
Repeat this for every single ingredient.
Add up all ingredient costs
List every ingredient with its per-portion cost. Add them together. That's your total ingredient cost per dish - calculators like KitchenNmbrs can automate this tedious math.
💡 Total cost price pasta carbonara:
- Pasta: €0.36
- Pancetta: €0.74
- Eggs: €0.45
- Parmesan: €1.20
- Olive oil: €0.05
- Other: €0.15
Total: €2.95 per portion
Figure out your minimum selling price
With a cost price of €2.95 and targeting 30% food cost, calculate: €2.95 ÷ 0.30 = €9.83 excl. VAT
Add 9% VAT: €9.83 × 1.09 = €10.71 incl. VAT. Round up to €11.00 minimum selling price.
⚠️ Note:
This covers your minimum profitable price. Market rates might support charging more based on your restaurant's positioning.
Test and refine your recipe
Prepare the dish several times using exact measurements. Verify portion sizes work and you haven't missed ingredients. Adjust quantities as needed and recalculate costs.
How do you calculate the cost price? (step by step)
Make an ingredient list
Write down all ingredients with exact quantities per portion. Don't forget oil, spices, garnish, or sauces. Measure everything the way you would in your restaurant.
Look up purchase prices
Ask your supplier for prices on all ingredients. Pay attention to the unit: per kilo, per liter, or per unit. Don't use supermarket prices, they don't apply to catering.
Calculate costs per portion
For each ingredient: divide your portion weight by the total weight and multiply by the purchase price. Add up all ingredient costs for your total cost price.
Determine your selling price
Divide your cost price by your desired food cost percentage (usually 0.28 to 0.35). Multiply by 1.09 for the price including 9% VAT.
✨ Pro tip
Test your new dish exactly 7 times in your kitchen using precise measurements before finalizing the cost calculation. This catches portion inconsistencies that could throw off your pricing by 15-20%.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Should I include spices and seasonings in the cost price?
Absolutely. That "pinch" of pepper costs real money when you're serving 100 portions weekly. Calculate spices by actual weight or volume per serving.
What about cutting loss with meat and fish?
Factor cutting waste into your costs. If you lose 20% to trimming, divide your purchase price by 0.80 to get the true usable cost per kilo.
Can I estimate the cost price instead of calculating it exactly?
Estimating usually means losing money. A 50-cent miscalculation per portion costs you €1,300 annually at just 50 servings per week.
How often should I update my cost prices?
Review costs every 3 months minimum, or immediately after supplier price increases. Inflation and energy costs affect everything you buy.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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