Picture this: packed dining room every night, but your bank account tells a different story. Most restaurant owners chase more covers, thinking volume equals profit. The brutal reality? You're bleeding money on every single plate.
Why more revenue doesn't always mean more profit
Sounds straightforward: pack the house, make more cash. But here's what kills restaurants—if your food cost's out of control, every extra guest pushes you deeper into the red.
💡 Example:
You sell a steak for €32.00 (incl. 9% VAT):
- Selling price excl. VAT: €29.36
- Ingredient costs: €12.50
- Food cost: 42.6%
With every extra steak you lose €2.50 in margin compared to a healthy 30% food cost.
Sell 50 more steaks monthly? You're down €1,500. Higher sales, shrinking profits.
The hidden costs eating into your margin
Profit leaks happen in places you'd never think to check. These silent killers add up fast:
- Oversized portions: Chef plates 250g meat instead of 200g
- Premium garnishes: Those fancy microgreens at €3/100g
- Yield miscalculations: Whole fish purchase, but 45% ends up in the bin
- Spoilage: Over-ordering leads to expired inventory
⚠️ Heads up:
Most owners calculate main ingredients only. But that butter, olive oil, seasoning blend, and garnish? They're eating your margins alive.
How to calculate your real margin
Your actual margin goes way beyond food cost. Every expense chips away at that selling price:
💡 Example calculation:
Pasta carbonara for €18.50 (incl. 9% VAT):
- Selling price excl. VAT: €16.97
- Ingredients: €5.10 (30%)
- Staff: €5.09 (30%)
- Rent and fixed costs: €3.39 (20%)
Net margin: €3.39 (20%)
Food cost jumps from 30% to 40%? Your net margin gets slashed from 20% to 10%. Half your profit, gone.
Why increasing revenue makes the problem worse
More covers create kitchen chaos. And chaos destroys margins—it's the kind of thing you only learn after closing your first month at a loss:
- Generous portions become the safety net under pressure
- Precise measuring goes out the window during rush
- Waste multiplies with every mistake order
- Emergency purchasing at premium prices becomes routine
The outcome? Revenue climbs while profit per dish crashes.
Focus on margin first, then on revenue
Nail down your top 5 sellers first. Get those margins healthy, then you can confidently handle the dinner rush.
💡 Example impact:
You lower the food cost of your top sellers from 38% to 30%:
- Difference per dish: 8 percentage points
- At €20 average check: €1.60 extra margin
- At 100 covers/day: €160/day extra
Per year: €58,400 extra profit without a single extra guest.
How food cost calculators improve margin
Digital tools give you instant visibility into each dish's profitability. You can:
- Lock in recipes with precise measurements
- Track cost changes automatically
- Identify margin-killing menu items
- Adjust prices immediately after supplier increases
This gives you margin control before chasing more revenue.
How do you check if margin or revenue is your problem?
Calculate your food cost of top sellers
Take your 5 best-selling dishes. Add up all ingredients and divide by the selling price excl. VAT. Above 35%? Then margin is your problem.
Check your occupancy rate
Below 70% occupancy? Then you have a revenue problem. Above 80% but earning little? Then it's a margin problem.
Compare revenue with profit trend
Look at the last 6 months. Is your revenue rising but profit falling? Then your margin is leaking and you need to tackle your food cost first.
✨ Pro tip
Track food cost on just one additional dish each week for the next 8 weeks. You'll spot margin killers without drowning in spreadsheets, and most owners discover at least two menu items that are secretly losing money.
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
What's a healthy food cost percentage for restaurants?
Most successful restaurants target 28-35% food cost. Fine dining can stretch to 38% due to premium ingredients. Fast-casual concepts often hit 25-30% through standardized processes and efficient prep.
How do I find where my margins are bleeding?
Start with your 5 highest-volume dishes and cost them down to the last gram of salt. Include oils, garnishes, and sauces—that's usually where the biggest leaks hide. Many owners discover they're actually losing money on their "bestsellers."
Should I cut costs or raise menu prices?
Cut costs first through portion standardization and waste reduction. Price increases work better once you've optimized your food cost, because customers won't absorb poor kitchen efficiency forever.
How often should I review my dish profitability?
Weekly reviews of your top sellers, monthly deep-dives on full menu profitability. Supplier price fluctuations happen constantly, so staying current prevents margin erosion before it becomes a crisis.
📚 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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