A 50-seat bistro discovers they need €730 just to cover lunch costs before making a single euro profit. Most restaurant operators can't pinpoint the exact revenue threshold for each service period. Without this critical number, you're flying blind on whether that quiet Tuesday dinner actually lost money.
What is break-even revenue per service?
Break-even revenue per service represents the exact revenue threshold needed during one service period to cover every fixed and variable expense. Hit this number and you're neither gaining nor losing money.
💡 Example:
50-seat restaurant operating lunch and dinner:
- Fixed costs per day: €450 (rent, insurance, depreciation)
- Variable costs lunch: €280 (staff, energy)
- Variable costs dinner: €380 (additional staff)
Break-even lunch: €730 | Break-even dinner: €830
Why this matters for daily operations
Operating without service-level break-even data leads to costly mistakes:
- Premature closures: "Slow night, let's close at 9 PM" - but you might've already hit your break-even threshold
- Unprofitable bookings: That 20-person party at €15 per head looks attractive until you realize it won't cover basic costs
- Inefficient staffing: Overstaffing during quiet periods destroys your margins before you serve the first dish
Breaking down daily vs. service costs
Accurate calculations require separating expenses that occur daily from those tied to specific service periods.
💡 Cost structure example:
Fixed daily expenses (€450):
- Rent: €200/day
- Insurance: €50/day
- Equipment depreciation: €100/day
- Base utilities: €100/day
Variable lunch costs (€280):
- Lunch staff wages: €200
- Additional energy usage: €50
- Cleaning supplies: €30
⚠️ Note:
Allocate fixed daily costs proportionally across services. Two services? Split evenly. Dinner-only operation? That service absorbs 100% of fixed costs.
The break-even calculation formula
The math is straightforward, but cost allocation requires careful attention:
Break-even revenue = (Allocated fixed costs + Service variable costs) / (1 - Variable cost percentage)
Variable cost percentage includes food costs and other variable expenses as a decimal.
💡 Step-by-step calculation:
Lunch service with 30% food costs:
- Fixed daily costs: €450 → €225 per service
- Lunch variable costs: €280
- Combined fixed + variable: €225 + €280 = €505
- Variable cost percentage: 30% (0.30)
Break-even: €505 / (1 - 0.30) = €721
Per-guest break-even analysis
Transform total service break-even into individual customer targets:
Break-even per cover = Service break-even revenue / Average guest count
💡 Real-world application:
Lunch break-even €721, typical 45 guests:
€721 / 45 = €16.02 minimum per person
Translation: guests spending under €16 need offsetting from higher-spending customers.
Service-by-service tracking
Monitor each service period against its break-even threshold for immediate operational insights. Something most kitchen managers discover too late is that individual service performance varies dramatically, even within the same week.
- Exceeding break-even: This service generates actual profit
- Meeting break-even: Costs covered, zero profit or loss
- Missing break-even: This service period costs you money
⚠️ Note:
One below-break-even service isn't catastrophic if other periods compensate. Focus on your cumulative daily or weekly performance.
Adapting to operational patterns
Different scenarios require adjusted break-even calculations:
- Slow weekday lunch: Reduced staffing lowers break-even threshold
- Weekend dinner rush: Higher labor costs increase break-even, but revenue potential grows
- Seasonal patio service: Additional staff costs offset by expanded seating capacity
These variations help you optimize staffing decisions and establish realistic revenue goals for each service type.
How do you calculate break-even revenue per service?
Gather all fixed daily costs
Add up: rent per day, insurance, depreciation, basic energy and water costs. Distribute these fairly across your services (lunch/dinner 50/50, or 100% to one service).
Calculate variable costs per service
Add staff, extra energy, cleaning and other costs specific to this service. Calculate food cost separately as a percentage.
Apply the break-even formula
Break-even = (Fixed costs + Variable costs) / (1 - Food cost%). This gives you the minimum revenue you need to break even.
✨ Pro tip
Track your break-even performance every Tuesday and Friday to catch patterns early. Services missing break-even by 15% or more for three consecutive weeks signal the need for immediate operational 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
Should I include food cost in the variable costs?
No, food cost gets calculated as a percentage of revenue within the formula. Staff wages, energy, and cleaning supplies are the fixed variable amounts per service.
What if I only serve dinner?
Your dinner service absorbs 100% of fixed daily costs, creating a higher break-even threshold. But you only need one profitable service to succeed.
How often should I recalculate my break-even?
Review monthly for cost changes like supplier price increases, rent adjustments, or staffing modifications. Major cost shifts require immediate recalculation.
What if I'm consistently below break-even?
You have three paths: reduce costs through leaner staffing or ingredient sourcing, increase menu prices, or boost customer volume. Inaction guarantees continued losses.
📚 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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