Picture this: it's Tuesday evening, you've served 18 guests, and you're wondering if you actually made money tonight. Most restaurant owners can't answer this question because they don't know their break-even point for different occupancy levels. Understanding these numbers means the difference between profitable operations and bleeding cash during slow periods.
What is break-even with variable occupancy?
Break-even happens when your revenue matches your total costs exactly. But restaurants face a unique challenge - your costs include fixed expenses (rent, core staff) plus variable costs (ingredients, utilities) that shift based on guest volume.
💡 Example:
Restaurant with 50 seats:
- Fixed costs per month: €12,000 (rent, base staff, insurance)
- Variable costs per guest: €8 (ingredients, extra staff)
- Average bill per guest: €28
Margin per guest: €28 - €8 = €20
The break-even formula
For restaurants, you'll use this calculation:
Break-even number of guests = Fixed costs ÷ (Average bill - Variable costs per guest)
This formula reveals the minimum guest count needed to cover all expenses. Simple, but powerful.
⚠️ Note:
Always work with prices excluding VAT. Your €28 menu price becomes €25.69 excl. VAT (€28 ÷ 1.09).
Different occupancy scenarios
Your break-even shifts dramatically across different scenarios. Here's what affects the numbers:
- Quiet weekdays: Skeleton crew, minimal energy usage
- Weekend rushes: Extra servers, all equipment running
- Seasonal fluctuations: Different supplier costs and staffing needs
- Special events: One-off additional expenses
💡 Example calculation:
Weekday (Monday):
- Daily fixed costs: €400 (€12,000 ÷ 30 days)
- Variable costs per guest: €8
- Average bill excl. VAT: €25.69
Break-even: €400 ÷ (€25.69 - €8) = €400 ÷ €17.69 = 23 guests
Identifying fixed vs. variable costs
Accurate calculations require proper cost categorization:
Fixed costs (remain constant regardless of guest volume):
- Rent and equipment leases
- Core staff salaries (chef, permanent team)
- Insurance premiums
- Equipment depreciation
- Base utility costs
Variable costs (fluctuate with guest numbers):
- Food ingredients (your food cost)
- Additional staff (extra servers for busy shifts)
- Incremental energy usage (more cooking, dishwashing)
- Cleaning supplies
⚠️ Note:
Labor often falls into both categories. Your head chef represents fixed costs, but calling in weekend servers creates variable expenses per guest served.
Break-even per day of the week
After managing kitchen operations for nearly a decade, I've learned that most restaurants operate with completely different cost structures depending on the day:
💡 Example weekly planning:
Monday (skeleton crew):
- Fixed costs: €350/day
- Variable costs: €8/guest
- Break-even: 20 guests
Saturday (full operation):
- Fixed costs: €550/day (additional staff)
- Variable costs: €9/guest (higher energy usage)
- Break-even: 33 guests
Using break-even figures
Once you've calculated these numbers, they become decision-making tools:
- Operating schedule: Should you stay closed on slow Mondays?
- Staffing decisions: Optimal server count for different days
- Marketing focus: Target promotional efforts on days below break-even
- Menu pricing: Adjust prices to reduce break-even thresholds
Tools like KitchenNmbrs can track these fixed and variable costs automatically, calculating break-even scenarios without manual spreadsheet work.
How do you calculate break-even? (step by step)
Calculate your monthly fixed costs
Add up all costs you have regardless of the number of guests: rent, base staff, insurance, depreciation. These are your fixed costs per month. Divide by 30 for daily fixed costs.
Determine variable costs per guest
Calculate what each additional guest costs you: ingredients (food cost), extra energy, possibly extra staff. This typically ranges between €6-€12 per guest depending on your concept.
Calculate your average bill excluding VAT
Take your average bill per guest and convert to excluding VAT (divide by 1.09). This is your revenue per guest that you use in the break-even calculation.
Apply the formula
Break-even number of guests = Daily fixed costs ÷ (Average bill excl. VAT - Variable costs per guest). This gives you the minimum number of guests to break even.
✨ Pro tip
Track your break-even against actual guest counts every 48 hours for three weeks straight. You'll spot patterns showing which days consistently fall short, allowing you to adjust staffing or operating hours before losses accumulate.
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 if my occupancy varies greatly per day?
Create separate break-even calculations for each day of the week. Monday's skeleton crew has different fixed costs than Saturday's full operation. Build a weekly planning template with day-specific break-even targets.
Should I include VAT in my break-even calculation?
Never include VAT in break-even calculations. You're simply collecting VAT for the tax authority - it's not actual revenue. Always divide your menu prices by 1.09 to get the excluding-VAT amount for calculations.
Are there different break-evens for lunch and dinner?
Absolutely. Lunch typically generates lower average bills but also incurs reduced variable costs per guest. If you operate different menus and pricing structures, calculate separate break-even points for each service period.
📚 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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