BETA APP IN DEVELOPMENT HACCP and more are available in your dashboard — currently in beta, so minor bugs may occur. The updated app with full integration is coming soon.
📝 Purchasing, suppliers & strategy · ⏱️ 2 min read

How do I calculate the margin on a partnership with a bakery that supplies leftover bread for croutons?

📝 KitchenNmbrs · updated 14 Mar 2026

Picture this: the local bakery down the street offers you their day-old bread at 80% off regular prices. Sounds like a goldmine for your crouton production, right? But calculating the real profitability means digging deeper than that tempting discount.

What does your current crouton production cost?

Start by tracking every penny you spend making croutons right now. Don't skip the small stuff:

  • Bread purchase: fresh loaves bought specifically for croutons
  • Labor time: cutting, seasoning, baking
  • Energy: oven usage for baking
  • Seasonings and oil: for flavor

💡 Example current costs:

For 1 kg of croutons you need:

  • Fresh bread: 1.2 kg at €2.50/kg = €3.00
  • Labor time: 20 min at €18/hour = €6.00
  • Oil and seasonings: €0.50
  • Energy (oven): €0.30

Total: €9.80 per kg croutons

Calculate the costs of the bakery deal

Leftover bread changes everything about your cost structure. Sure, the bread's cheaper. But you've got new expenses lurking:

  • Pickup costs: time and fuel to the bakery
  • Uncertainty: how much bread do you get each day?
  • Quality: is the bread suitable for croutons?
  • Storage: leftover bread needs quick processing

💡 Example bakery deal:

For 1 kg of croutons from leftover bread:

  • Leftover bread: 1.2 kg at €0.50/kg = €0.60
  • Pickup: 15 min at €18/hour = €4.50
  • Extra labor (sorting): 5 min = €1.50
  • Oil and seasonings: €0.50
  • Energy: €0.30

Total: €7.40 per kg croutons

Calculate whether it's worth it

Now comes the moment of truth. Compare your current costs against the bakery deal, but watch for sneaky hidden expenses:

⚠️ Watch out:

Don't calculate pickup costs per kg of bread, but per trip. If you pick up 10 kg of bread, the pickup costs of €4.50 divided by 10 kg = €0.45 per kg.

The formula for your savings per kg of croutons:

Savings = Current costs - Bakery costs

In the example: €9.80 - €7.40 = €2.40 savings per kg

Calculate the monthly impact

How many croutons does your kitchen actually go through each month? From years of working in professional kitchens, I've seen restaurants underestimate their usage by 30%. Multiply your real consumption by your per-kg savings:

💡 Example monthly impact:

Restaurant uses 20 kg croutons per month:

  • Savings per kg: €2.40
  • Monthly consumption: 20 kg
  • Monthly savings: 20 × €2.40 = €48

Annual savings: €48 × 12 = €576

Account for risks

Leftover bread partnerships aren't all sunshine and savings. These deals come with real drawbacks that'll hit your bottom line:

  • Varying quality: sometimes too hard, sometimes too soft
  • Unreliable quantities: one day 5 kg, another day 15 kg
  • Extra waste: bread that isn't suitable
  • Time pressure: leftover bread needs quick processing

Factor in 10-15% extra waste in your costs. So in the example, €7.40 becomes €8.03-€8.51 per kg.

How do you calculate the margin on a bakery deal? (step by step)

1

Calculate your current crouton costs

Add up all costs: bread, labor time, energy, seasonings and oil. Divide by the number of kg of croutons you make. This is your benchmark.

2

Calculate costs of the bakery deal

Add up: leftover bread price, pickup costs (time + fuel), extra labor for sorting, and normal seasonings/oil/energy. Don't forget to divide pickup costs by total quantity.

3

Subtract and factor in risks

Current costs minus bakery costs = savings per kg. Add 10-15% for extra waste and uncertainty. Multiply by your monthly consumption for the total impact.

✨ Pro tip

Track your bakery partnership for exactly 6 weeks before signing any long-term agreements. You'll discover the real waste percentage and actual quality consistency - two numbers that make or break this deal.

Calculate this yourself?

In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.

Try KitchenNmbrs free →

Was this article helpful?

Share this article

WhatsApp LinkedIn

Frequently asked questions

Should I include VAT in this calculation?

No, always calculate excluding VAT. Both your current costs and the bakery deal are business expenses excl. VAT, so you're comparing apples to apples.

What if the bakery delivers unreliably?

Nail down agreements about minimum and maximum quantities upfront. Always have a backup plan ready - can you quickly source fresh bread if the bakery doesn't deliver?

How do I calculate pickup costs accurately?

Calculate time (round trip) × hourly wage + fuel costs. Then divide this total by the kg of bread you actually pick up. Picking up 10 kg makes the cost per kg much lower than picking up 3 kg.

Is leftover bread always suitable for croutons?

Absolutely not - check every single delivery. Bread that's too soft turns mushy, moldy bread is trash. Build 10-15% waste into your cost calculations from day one.

ℹ️ This article was prepared based on official sources and professional expertise. While we strive for current and accurate information, the content may differ from the most recent regulations. Always consult the official authorities for binding standards.

📚 Sources consulted

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.

JS

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.

🏆 8 years kitchen manager at 1NUL8 Group Rotterdam
Expertise: food cost management HACCP kitchen management restaurant operations food safety compliance

Optimize your purchasing with data

Know exactly which supplier is most cost-effective and how price changes affect your margins. KitchenNmbrs links purchasing directly to recipe costs. Try it free for 14 days.

Start free trial →
Disclaimer & terms of use

Table of Contents

💬 in 𝕏