A local bistro owner recently discovered their "profitable" €50,000 monthly revenue was actually generating just €2,500 in real profit. Net margin reveals what you truly keep after every expense. Here's how to calculate yours accurately and spot where profit disappears.
What exactly is net margin?
Net margin represents the percentage of revenue remaining after deducting every single expense. Unlike gross margin, which only considers food costs, net margin includes wages, rent, utilities, and all operational expenses.
💡 Example:
Restaurant with €50,000 monthly revenue:
- Revenue: €50,000
- Food cost: €15,000 (30%)
- Staff costs: €18,000 (36%)
- Rent + energy + other: €12,000 (24%)
Net profit: €5,000 = 10% net margin
The formula for net margin
Net margin % = (Net profit / Revenue) × 100
Your net profit equals total revenue minus every cost category:
- Food cost (ingredients)
- Staff costs (wages + social contributions)
- Rent and energy
- Depreciation and interest
- All other operating costs
Steps to set up your P&L
Building an accurate P&L requires capturing every expense category. After managing kitchen operations for nearly a decade, I've seen too many owners miss crucial cost components that destroy their margins.
💡 Example P&L structure:
- Revenue (excl. VAT): €45,872
- Less: Food cost: €13,762 (30%)
- = Gross margin: €32,110 (70%)
- Less: Staff costs: €16,514 (36%)
- Less: Rent: €4,000
- Less: Energy: €2,200
- Less: Other costs: €4,500
- = Net profit: €4,896 (10.7%)
⚠️ Note:
Always calculate with revenue excluding VAT. The VAT you collect must be passed on to the Tax Authority. It's not yours.
What is a healthy net margin?
Net margins fluctuate significantly based on concept and location:
- Fine dining: 8-15% (higher staff costs)
- Casual dining: 10-18%
- Fast casual: 12-20% (less staff)
- Delivery/takeaway: 8-15% (platform fees squeeze margin)
Margins below 5% signal trouble. Anything above 20% is exceptional.
💡 Example calculation:
You're doing €40,000 revenue per month:
- At 8% net margin: €3,200 profit
- At 15% net margin: €6,000 profit
That difference of 7 percentage points = €33,600 more profit per year!
Where does it often go wrong?
Most restaurants underestimate their true net margin because they miss these hidden costs:
- Hidden staff costs: social contributions, holiday pay, sick leave
- Depreciation: kitchen equipment, furniture, renovations
- Seasonal variations: summer good, winter bad - calculate with annual figures
- One-time costs: repairs, equipment replacement
⚠️ Note:
A good month with 20% margin can hide a bad month with -5% margin. Always look at longer periods.
How do you improve your net margin?
Three primary levers can boost your net margin:
- Increase revenue: more guests, higher average bill
- Lower food cost: better purchasing, less waste, correct portions
- Optimize staff costs: better scheduling, less sick leave
You'll often see the biggest impact by monitoring food cost and labor expenses closely. Tools like food cost calculators help you track ingredient costs per dish automatically, so you can quickly identify where profit leaks occur.
How do you calculate net margin? (step by step)
Collect all revenue for the period
Add up all income, but always calculate excluding VAT. The VAT you collect must be passed on and is therefore not real revenue for you.
Add up all costs
Food cost, staff costs, rent, energy, depreciation, interest, insurance - literally everything you pay to keep the business running.
Calculate net profit and percentage
Subtract all costs from your revenue = net profit. Divide this by your revenue and multiply by 100 to get your net margin percentage.
✨ Pro tip
Track your net margin over rolling 13-week periods instead of monthly snapshots. This approach smooths out seasonal fluctuations while giving you actionable data faster than annual reviews.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
Was this article helpful?
Frequently asked questions
Should I include VAT in my net margin calculation?
No, always calculate with revenue excluding VAT. The VAT you collect from guests must be passed on to the Tax Authority - that's not real revenue for you.
What's the difference between gross and net margin?
Gross margin equals revenue minus food cost only. Net margin subtracts all expenses including staff, rent, and utilities. Net margin shows your true profitability picture.
Why is my calculated net margin lower than expected?
Hidden costs often sabotage margins: social contributions on wages, equipment depreciation, seasonal revenue dips, or one-time repair expenses. These "invisible" costs add up quickly and destroy profitability if you don't track them properly.
📚 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.
Calculate your break-even point in seconds
Food cost is just one part of the story. KitchenNmbrs also helps you structure labor costs and other expenses for a complete break-even overview. Start free.
Start free trial →