Many food truck owners think any day out equals profit. Bad weather can slash your revenue by 30-70%, and without knowing your break-even point, you might be losing money every rainy day. A simple calculation reveals exactly how many customers you need to stay profitable.
Calculate your break-even point
Everything hinges on daily customer count for food trucks. Too few customers means losses, regardless of how well you manage food costs.
💡 Example:
Your daily fixed costs:
- Fuel: €25
- Pitch rental: €40
- Part-time staff: €80
- Insurance/depreciation: €15
Total fixed costs: €160 per day
Your average transaction hits €12.50 excl. VAT (€13.63 incl. VAT). With 30% food costs, your gross margin per customer reaches €8.75.
Break-even formula: Fixed costs ÷ Gross margin per customer = Minimum number of customers
€160 ÷ €8.75 = 19 customers minimum to break even.
Estimate the impact of bad weather
Rain or storms devastate your customer base. Here's what you can expect:
- Light rain: 30-40% fewer customers
- Heavy rain/storm: 50-70% fewer customers
- Cold winter day: 40-60% fewer customers
- Extreme heat: 20-30% fewer customers
💡 Example calculation:
Normal day: 45 customers
Rainy day: 45 × 0.6 = 27 customers
Revenue: 27 × €8.75 = €236.25
Fixed costs: €160
Profit: €76.25 (still profitable!)
Knowing when staying home pays off
Sometimes you'll save money by not opening. Calculate this beforehand:
⚠️ Note:
If weather conditions mean you'll serve fewer than 19 customers, you're losing money. Stay home and save €160.
Use these guidelines:
- Storm/hail: Almost nobody ventures out. Stay home.
- Heavy rain all day: Consider staying closed
- Light shower: Open up, people seek shelter under your awning
- Cloudy/cold: Operate but expect reduced revenue
This pattern we see repeatedly in restaurant financials - owners who track weather impact make 15-20% more profit annually than those who don't.
Build a flexible cost structure
Make costs as variable as possible to survive slow days:
💡 Example adjustments:
- Purchasing: 50% fewer ingredients on bad weather days
- Staff: Work solo on questionable days
- Pitch: Choose covered locations
- Menu: Add hot drinks during winter
This drops your break-even point to maybe 12 customers instead of 19.
Create seasonal planning
Plan your year around weather patterns and events:
- April-October: Peak season allows higher fixed costs
- November-March: Minimize costs, target indoor events
- Rainy months: Scout alternative locations
- Holidays: Follow tourist areas
Apps like KitchenNmbrs let you track daily customer counts alongside weather conditions. You'll build a database for better predictions next season.
How do you calculate financial feasibility? (step by step)
Calculate your daily fixed costs
Add up: fuel, pitch rental, staff, insurance and truck depreciation. These are costs you always have, regardless of how many customers you serve.
Determine your gross margin per customer
Average transaction value excl. VAT minus your food cost percentage. If your transaction is €12.50 and food cost is 30%, then your margin is €8.75 per customer.
Calculate your break-even point
Divide your fixed costs by your margin per customer. This gives you the minimum number of customers you need to avoid losses.
✨ Pro tip
Track weather conditions and customer counts for 90 days straight. You'll discover your location-specific patterns and know exactly when 15+ customers are guaranteed - your minimum threshold for profitable operations.
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
How many fewer customers do I get in rain?
Light rain typically reduces customers by 30-40%, while heavy rain or storms can drop numbers by 50-70%. Location and season affect these percentages.
When should I stay home instead of opening?
Stay closed when you expect fewer customers than your break-even point. In extreme weather, you'll lose more money operating than staying home.
Can I reduce fixed costs on bad weather days?
Yes, by purchasing fewer ingredients, working alone, and negotiating flexible pitch rentals. This significantly lowers your break-even point.
How do I predict customer numbers accurately?
Maintain a logbook tracking weather, location, and customer counts. After several months, you'll identify patterns for better forecasting.
Should VAT be included in my margin calculations?
Always calculate margins excluding VAT. While customers pay the 9% VAT-inclusive price, use the excluding VAT amount for cost calculations.
What's the minimum profit margin I need per customer during slow periods?
Aim for at least €6-8 gross margin per customer during bad weather. This cushion helps absorb the impact of reduced foot traffic while covering essential costs.
⚠️ EU Regulation 1169/2011 — Allergen Information — https://eur-lex.europa.eu/eli/reg/2011/1169/oj
The allergen information on this page is based on EU Regulation 1169/2011. Recipes and ingredients may vary by supplier. Always verify current allergen information with your supplier and communicate this correctly to your guests. KitchenNmbrs is not liable for allergic reactions.
In the UK, the FSA enforces allergen regulations under the Food Information Regulations 2014.
📚 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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