Your restaurant buzzes with activity every night, yet your bank account tells a different story. Most owners discover they're bleeding money only after twelve months of grinding. A handful of critical metrics can reveal your business's true health in under an hour.
The 5 numbers that determine your viability
Restaurants survive only if they generate consistent profits month after month. These five metrics paint the complete picture:
- Food cost percentage - How much of your revenue goes to ingredients?
- Average check - What does a guest spend on average?
- Number of covers per day - How many guests do you serve?
- Labor cost percentage - How much goes to wages?
- Net profit margin - What's left after all costs?
💡 Example: Bistro with 40 seats
Operating seven days weekly, serving 250 covers:
- Average check: €28.50
- Weekly revenue: 250 × €28.50 = €7,125
- Monthly revenue: €7,125 × 4.3 = €30,638
- Annual revenue: €367,650
But does this cover expenses and yield profit?
Food cost: the foundation of your viability
Food costs determine if profit's even possible. Excessive ingredient expenses guarantee losses before you pay a single bill.
Formula: Food cost % = (Ingredient costs / Sales price excl. VAT) × 100
💡 Example: Analyze your signature dish
Steak priced at €32.00 (including 9% VAT):
- Sales price excl. VAT: €32.00 / 1.09 = €29.36
- Ingredient costs: €10.80
- Food cost: (€10.80 / €29.36) × 100 = 36.8%
This exceeds healthy limits! Restaurants should target 28-33%.
⚠️ Note:
Calculate using prices EXCLUDING VAT. Menu prices include 9% VAT. Many owners miscalculate here, thinking their food costs are lower than reality.
Labor costs: your biggest expense
After ingredients, payroll typically devours the largest chunk of revenue. Healthy ratios fall between 25% and 35% of total sales.
- Under 25%: You're likely understaffed
- 25-30%: Healthy range for most establishments
- 30-35%: Acceptable but leaves little wiggle room
- Above 35%: Problematic unless you're charging premium rates
💡 Example: Labor cost breakdown
Bistro generating €30,000 monthly:
- Head chef: €3,200/month
- Sous-chef: €2,800/month
- Service staff (2 part-time): €2,400/month
- Employer contributions (30%): €2,520/month
Total: €10,920 = 36.4% of revenue. Dangerously high!
The 1-2-3 rule for viability
This framework quickly reveals if your numbers add up:
- 1/3 for ingredients (food cost maximum 33%)
- 1/3 for staff (labor costs maximum 33%)
- 1/3 for everything else + profit (rent, utilities, equipment, profit)
Food and labor costs exceeding 65% combined spell trouble. You're left scrambling to cover rent, utilities, equipment depreciation, and any hope of profit. It's the kind of thing you only learn after closing your first month at a loss - watching those two categories devour everything before you even touch fixed expenses.
⚠️ Note:
This serves as a guideline, not gospel. Premium establishments can justify higher food costs through elevated pricing. Fast-casual concepts often achieve lower labor ratios. But for initial assessment, 1-2-3 provides solid footing.
Minimum covers needed for survival
Every restaurant has a break-even threshold: the minimum daily guests required to cover all expenses.
Formula: Break-even covers = Monthly fixed costs / (Average check excl. VAT - Variable costs per cover)
💡 Example: Break-even analysis
Restaurant with these financials:
- Monthly fixed costs: €18,000 (rent, salaries, utilities)
- Average check: €28.50 (incl. VAT) = €26.15 excl. VAT
- Variable costs per guest: €8.50 (ingredients, supplies)
- Contribution per cover: €26.15 - €8.50 = €17.65
Break-even: €18,000 / €17.65 = 1,020 covers monthly
That's 34 guests daily across 30 operating days.
Red flags signaling poor viability
Some restaurants simply can't survive long-term. These warning signs indicate structural issues:
- Food costs consistently above 40%
- Labor expenses exceeding 40% of revenue
- Averaging fewer than 20 covers daily
- Average checks below €15 with full table service
- Six straight months of losses
- Revenue declining without external factors
Multiple red flags demand immediate action or honest conversations about closure. Sometimes the numbers don't lie, and emotion can't override mathematics.
How do you check if your restaurant is viable? (step by step)
Calculate your food cost for your top 5 dishes
Add up all ingredient costs per dish. Divide by sales price excl. VAT and multiply by 100. If this is structurally above 35%, you're losing money on your most popular dishes.
Check your labor cost percentage
Add up all wages and employer contributions from last month. Divide by your revenue and multiply by 100. Above 35% becomes problematic for most restaurants.
Calculate your break-even point
Divide your monthly fixed costs by your margin per cover (average check minus variable costs). This gives you the minimum number of guests per month to break even.
Compare with your actual occupancy
Count your covers from last month. Are you above your break-even? How much room do you have? If you're below break-even, something needs to change in your concept, prices or costs.
Analyze the trend over 6 months
One bad month is not a problem. Structural losses are. See if your numbers are improving or declining. A declining trend without external cause is a warning signal.
✨ Pro tip
Calculate your break-even point for the next 90 days, then track daily covers against this target. If you're consistently 15% below break-even for three weeks straight, you need immediate pricing or cost adjustments.
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 realistic profit margin for restaurants?
Healthy net profit margins range from 5% to 15% of revenue. Anything below 5% leaves you vulnerable to unexpected expenses or slow periods. Above 15% represents exceptional performance in this industry.
How often should I monitor these metrics?
Track food costs monthly, labor expenses with each payroll cycle, and overall performance quarterly. Annual reviews come too late for meaningful adjustments.
My restaurant's packed but food costs are high - what now?
Full seats with poor margins means you're working hard for minimal return. Raise menu prices, adjust portion sizes, or source cheaper ingredients. Busy doesn't equal profitable.
Can I survive serving only 20 covers daily?
Depends entirely on your average check and fixed expenses. High-ticket items with low overhead can work, but €15 checks with expensive rent won't. Calculate your specific break-even point first.
What food cost percentage works for fine dining versus casual?
Fine dining can justify 35-38% food costs due to premium pricing and ingredients. Casual concepts should target 28-32%. Fast-casual operations often achieve 25-30% through efficient prep and limited menus.
How do I boost average checks without driving away customers?
Focus on appetizers, desserts, and beverage pairings rather than raising entree prices. Train servers on suggestive selling techniques. Even adding €2 per check can transform your bottom line significantly.
📚 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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