Gross margin is the percentage of your revenue that remains after deducting your purchase costs. It differs from food cost because it also includes drinks, side dishes and oth...
A 68% gross margin means you keep €68 from every €100 in sales after covering all purchase costs. This restaurant-wide metric differs from food cost because it includes drinks, sides, and every item you sell. Most successful restaurants maintain gross margins between 65% and 75%.
What exactly is gross margin?
Gross margin examines your entire operation, not just individual dishes. It's the percentage of your total revenue remaining after you've subtracted all purchase costs.
💡 Example:
Restaurant De Smulhoek in January:
Total revenue: €45,000
Food purchase costs: €13,500
Drink purchase costs: €1,500
Total purchase costs: €15,000
Gross margin: (€45,000 - €15,000) / €45,000 × 100 = 66.7%
The difference between gross margin and food cost
Many restaurant owners mix up gross margin with food cost. They're completely different metrics:
- Food cost: Focuses on one dish. What percentage of the selling price covers ingredients?
- Gross margin: Covers your entire operation. What percentage of your revenue survives after purchases?
- Food cost: Usually 28-35% for individual dishes
- Gross margin: Usually 65-75% for the entire restaurant
⚠️ Watch out:
A declining gross margin doesn't always signal high food costs. It could stem from excessive waste, theft, or poor purchasing decisions.
How do you calculate gross margin?
The formula is straightforward, but you must include all purchase costs:
Gross margin % = ((Revenue - Total purchase costs) / Revenue) × 100
Total purchase costs include:
- Food (meat, fish, vegetables, dairy)
- Drinks (alcoholic and non-alcoholic)
- Disposables (napkins, straws, packaging)
- Kitchen cleaning supplies
💡 Example calculation:
Café Het Pleintje, week 7:
Revenue: €12,000
Food purchases: €3,200
Drink purchases: €800
Disposables: €150
Total purchases: €4,150
Gross margin: (€12,000 - €4,150) / €12,000 × 100 = 65.4%
What is a good gross margin?
This varies based on your establishment type and target market:
- Fine dining: 70-78% (premium prices, lower volumes)
- Casual dining: 68-75% (balance between price and volume)
- Bistro/brasserie: 65-72% (affordability focus)
- Fast casual: 60-68% (competitive pricing, higher volumes)
- Delivery: 62-70% (platform commissions squeeze margins)
⚠️ Watch out:
A gross margin under 60% typically means insufficient coverage for staff, rent, and other fixed expenses. You're likely operating at a loss.
How do you improve your gross margin?
Multiple strategies can boost your gross margin:
- Smarter purchasing: Compare suppliers, negotiate better rates
- Reduce waste: Improve planning, control portions, repurpose leftovers
- Menu optimization: Feature dishes with stronger margins
- Strategic pricing: Raise prices on popular low-margin items
One of the most common blind spots in kitchen management is failing to track waste patterns by day of the week. Tuesday's prep often differs drastically from Saturday's rush, and this creates massive profit leaks that most owners never spot.
💡 Practical example:
Restaurant De Kust boosted their gross margin from 64% to 71% by:
• Weekly waste tracking (€200/week savings)
• Switching meat suppliers (8% cost reduction)
• Raising popular pasta price from €16.50 to €17.50
Result: €1,400 additional monthly profit
Seasonal strategies
Your gross margin fluctuates significantly by season. Summer often brings better prices for fresh products, while winter months drive up certain vegetable costs. Plan your purchasing strategically:
- Design seasonal menus around available products
- Create buffers for expensive periods
- Adapt your menu seasonally
Tracking gross margin in practice
Most restaurant owners calculate gross margin monthly. That's often too late for meaningful adjustments. Weekly monitoring works better:
- Compile your revenue and purchase costs weekly
- Calculate your gross margin
- Compare with previous weeks
- Investigate any deviations immediately
Professional systems can automate this tracking by connecting your purchases to your POS system.
Extended practical example
Restaurant La Bella Roma - Monthly analysis
Owner Marco noticed his gross margin sliding from 68% to 62% over three months. Through systematic analysis, he uncovered:
Problem 1: Stealth supplier price increases
His meat supplier had raised prices by 12% without notice.
Solution: Located new supplier offering 8% lower prices.
Impact: €380 monthly savings
Problem 2: Excessive vegetable waste
Daily €45 worth of vegetables hit the bin.
Solution: Smaller, frequent deliveries plus a 'leftovers special'.
Impact: Waste dropped to €15 daily = €900 monthly savings
Problem 3: Underpriced bestsellers
His carbonara carried a 38% food cost, far too high.
Solution: Price jumped from €14.50 to €16.00 with slight portion adjustment.
Impact: €520 extra monthly revenue
Final result: Gross margin climbed to 71% within two months.
Common mistakes in gross margin calculation
1. Overlooking hidden costs
Many owners forget disposables, cleaning supplies, or small purchases. These 'minor' costs can represent 2-4% of your revenue.
2. Ignoring inventory fluctuations
Calculating gross margin without considering inventory changes creates distorted results. Large inventory builds make your margin appear artificially low that month.
3. Failing to account for staff meals
Complimentary staff meals represent real costs. Budget €3-5 per meal and factor this into your gross margin calculations.
4. Infrequent monitoring
Monthly measurements arrive too late. Weekly checks enable faster adjustments when issues surface.
5. Seasonal blindness
Many owners forget gross margins vary seasonally. Always compare with the same period last year, not last month.
Summary
Gross margin serves as a vital health indicator for your restaurant. It differs from food cost by examining your entire operation, not individual dishes. Strong gross margins range from 65-75%, depending on your concept.
Boost your gross margin through intelligent purchasing, waste minimization, and strategic menu optimization. Monitor weekly rather than monthly to catch problems early. Avoid common pitfalls like missing cost categories or ignoring seasonal patterns.
Through systematic monitoring and targeted adjustments, you can substantially improve your gross margin and boost your restaurant's profitability.
How do you calculate gross margin? (step by step)
Collect your revenue figures
Take your POS system or accounting and add up all sales from the period you want to examine. Take the revenue including VAT, as you actually received it.
Add up all purchase costs
Collect all invoices for food, drinks, disposables and kitchen-related products. Only add up costs that are directly related to what you sell, not rent or staff.
Apply the formula
Subtract your total purchase costs from your revenue. Divide this by your revenue and multiply by 100 for the percentage. Formula: ((Revenue - Purchases) / Revenue) × 100.
✨ Pro tip
Audit your weekend versus weekday gross margins separately every 6 weeks. Weekend shifts often show 4-8% lower margins due to rushed prep work and higher waste during busy periods.
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Frequently asked questions
Should I include VAT in the gross margin calculation?
Yes, for gross margin you use revenue including VAT. This differs from food cost calculations, where you calculate excluding VAT. You're looking at what actually flows in versus what you spend.
What constitutes a dangerously low gross margin?
Below 60% makes covering other costs extremely difficult. You still face staff wages, rent, utilities, and fixed expenses. At 50% gross margin or lower, you're almost certainly losing money structurally.
Why does my gross margin vary so much month to month?
This fluctuation is completely normal. Seasons affect both revenue and purchase prices significantly. Special promotions, increased waste, or supplier changes can temporarily shift your margin.
How do I handle inventory when calculating gross margin?
You need to account for inventory changes to get accurate results. If you build up €2,000 in extra inventory this month, add that back to your calculation. Otherwise, your margin will look artificially low.
What purchase costs should I exclude from gross margin?
Don't include rent, staff wages, marketing, insurance, or other fixed costs. Only count items directly tied to sales: food, drinks, disposables, and kitchen cleaning supplies.
How often should I recalculate my gross margin targets?
Review your targets quarterly, especially after seasonal menu changes. Your summer terrace menu will have different margins than winter comfort food. Adjust expectations accordingly but maintain your overall annual target.
Can I compare my gross margin directly with other restaurants?
Not really - margins vary wildly by concept, location, and pricing strategy. A food truck's 55% margin might be excellent, while a fine dining restaurant's 65% could signal problems. Focus on your own trends instead.
📚 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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