Most restaurants fail not because their food is bad, but because they serve too few covers to break even. Some owners wing it with rough estimates while others crunch the actual numbers to guarantee profitability. That difference in approach often decides which restaurants thrive and which ones close within two years.
Why calculating covers matters more than you think
Your pasta might be perfect, but if you're only serving 20 covers when you need 35 to break even, you're bleeding money every service. The number of covers directly determines if you can cover your fixed costs—rent, staff wages, utilities—before you even think about profit.
⚠️ Note:
Many entrepreneurs think: "If I'm fully booked, I make money." But being fully booked with low bills can still mean a loss.
The math behind break-even covers
You need three numbers to figure out your minimum covers:
- Your total fixed costs per service
- Your average bill amount per cover
- Your average margin per cover
Formula: Minimum covers = Fixed costs per service ÷ Margin per cover
💡 Example:
Restaurant with evening service:
- Fixed costs per evening: €800 (staff, rent, utilities)
- Average bill: €45 per cover
- Food cost: 30% = €13.50 per cover
- Margin per cover: €45 - €13.50 = €31.50
Break-even: €800 ÷ €31.50 = 26 covers
Breaking down your fixed costs per service
Add up everything you pay regardless of how many people walk through your door:
- Staff: Chef, servers, dishwasher (hours × hourly rate)
- Rent: Monthly rent ÷ number of services per month
- Utilities: Gas, electricity, water per service
- Insurance: Monthly premium ÷ number of services
- Other: Phone, internet, waste collection
💡 Example fixed costs calculation:
Bistro, 25 services per month:
- Staff per service: €450
- Rent: €4,000 ÷ 25 = €160
- Utilities per service: €120
- Other costs: €70
Total fixed costs: €800 per service
Finding your real average bill
Dig into your POS data from the past 4 weeks:
- Total revenue ÷ total number of covers = average bill
- Count food only (drinks have different margins)
- Use the price including VAT since that's what guests actually pay
Working out margin per cover
Subtract your variable costs from the average bill. From tracking this across dozens of restaurants, you'll want to account for these main costs:
- Food cost: Typically runs 28-35% of the bill
- Beverage cost: For alcoholic drinks, expect 18-25%
- Payment processing: Card fees usually hit 1-3%
💡 Example margin calculation:
Average bill €45 (incl. VAT):
- Food cost 30%: €13.50
- Payment costs 2%: €0.90
- Total variable costs: €14.40
Margin per cover: €45 - €14.40 = €30.60
Moving beyond break-even to actual profit
Your break-even number keeps the lights on. For real profit, you need more covers:
- Break-even + 20%: Modest profit to reinvest
- Break-even + 40%: Healthy profit margin
- Break-even + 60%: Strong profitability
⚠️ Note:
Always calculate with realistic numbers. If your maximum capacity is 40 covers and your break-even is 35, you have a problem.
When your break-even exceeds capacity
If you need more covers than you can physically serve, you've got three ways out:
- Cut fixed costs: Reduce staff hours, renegotiate rent
- Boost average bills: Higher-priced dishes, better upselling
- Improve margins: Lower food costs, smarter purchasing
How do you calculate the minimum number of covers?
Calculate your fixed costs per service
Add up all costs you incur regardless of the number of guests: staff, rent, utilities, insurance. Divide monthly costs by the number of services per month.
Determine your average bill amount
Check your POS system from the last 4 weeks. Divide your total revenue by the total number of covers to get your average bill per guest.
Calculate your margin per cover
Subtract your variable costs from your average bill: food cost (28-35%), beverage cost (18-25% for alcohol) and payment costs (1-3%).
Apply the break-even formula
Divide your fixed costs per service by your margin per cover. This gives you the minimum number of covers to break even.
✨ Pro tip
Track your break-even numbers weekly during your first 6 months of operation. New restaurants see their average bills fluctuate by 20-30% as they find their customer base and refine their menu pricing.
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 beverages in my cover calculation?
Only if you also factor in the beverage margin in your calculation. Many restaurants only count food because beverages have a different margin structure. This keeps the math simpler and more accurate.
Does this differ between lunch and dinner service?
Yes, lunch often has lower bills and different fixed costs. Calculate both services separately for an accurate picture. Your staffing levels and utility usage will vary significantly between services.
What if my break-even is higher than my capacity?
Then you need to adjust your cost structure immediately. Focus on lowering fixed costs, increasing your average bill, or improving margin per dish. This situation indicates a fundamental business model problem.
📚 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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