📝 Anyone who sells food · ⏱️ 3 min read

How do I calculate the cost price of a sandwich I sell...

📝 KitchenNmbrs — · updated 06 Apr 2026

Quick answer
Nearly 40% of lunch shops unknowingly lose money on their sandwiches because they guess at food costs instead of calculating them. The cost price of your sandwich determines if you're profitable or slowly bleeding cash.

Nearly 40% of lunch shops unknowingly lose money on their sandwiches because they guess at food costs instead of calculating them. The cost price of your sandwich determines if you're profitable or slowly bleeding cash. Most owners don't realize they're losing money until months later.

What counts toward the cost price?

Your sandwich cost price includes every single item that touches the plate. Don't just count the bread and main filling - that's where most shops mess up:

  • The sandwich itself
  • All ingredients (meat, cheese, vegetables)
  • Butter or spread
  • Garnish (lettuce, tomato, cucumber)
  • Sauces and dressings
  • Packaging (if you do takeout)

? Example:

Ham and cheese sandwich with garnish:

  • White sandwich roll: €0.35
  • Ham (60g): €1.20
  • Cheese (30g): €0.45
  • Butter: €0.08
  • Lettuce, tomato, cucumber: €0.25
  • Mayonnaise: €0.05

Total cost price: €2.38

Calculate your food cost percentage

Once you know the cost price, figure out what percentage of your selling price goes to ingredients. This food cost percentage tells you if you're making money.

Formula: Food cost % = (Cost price of ingredients / Selling price excl. VAT) × 100

⚠️ Note:

Always calculate with the price EXCLUDING VAT. The price on your menu includes 9% VAT.

? Example:

Ham and cheese sandwich selling price: €6.50 incl. VAT

  • Selling price excl. VAT: €6.50 / 1.09 = €5.96
  • Cost price of ingredients: €2.38
  • Food cost: (€2.38 / €5.96) × 100 = 39.9%

That's too high for a lunch shop. Target is 25-35%.

What is a healthy food cost for sandwiches?

Lunch shops operate on different margins than full-service restaurants. You should aim for these targets:

  • Simple sandwiches: 20-30%
  • Luxury sandwiches: 25-35%
  • Hot toasties: 25-32%
  • Salads: 30-40%

Go above 35% and you're probably losing money on that sandwich. One of the most common blind spots in kitchen management is not tracking these percentages weekly - I've seen owners discover they're losing €200 a month on just one menu item.

How do you determine the right selling price?

Work backwards from your desired food cost percentage. Once your cost price is locked in, you can calculate what you need to charge minimum:

Minimum selling price excl. VAT = Cost price / (Desired food cost % / 100)

? Example:

Cost price: €2.38, desired food cost: 30%

  • Minimum price excl. VAT: €2.38 / 0.30 = €7.93
  • Price incl. 9% VAT: €7.93 × 1.09 = €8.64

You need to charge at least €8.64 to achieve 30% food cost.

Common mistakes in cost price calculation

These errors show up in most lunch shops we work with:

  • Forgetting small ingredients: Butter, sauces and garnish add up quickly
  • Calculating with price incl. VAT: Your food cost will look lower than it actually is
  • Not accounting for cutting loss: You don't get 1 kg of slices from 1 kg of ham
  • Forgetting packaging costs: Containers and bags cost money for takeout

⚠️ Note:

Update your cost prices regularly. Suppliers raise prices, but many business owners forget to adjust their selling prices accordingly.

Digital help with cost price calculation

Manual calculation takes time and you'll make mistakes. Food cost calculators automatically calculate your cost price and food cost percentage - you just enter the ingredients and quantities.

The real advantage? If your supplier raises prices, you immediately see what that does to your margin. Then you can adjust pricing before it hurts your profits.

Related articles

How do you calculate the cost price of a sandwich? (step by step)

1

Make a list of all ingredients

Write down literally everything that goes on the sandwich. Also the butter, the leaf of lettuce and the slice of tomato. Don't forget the packaging if you do takeout.

2

Weigh the exact quantities per sandwich

Get a kitchen scale and weigh how many grams of ham, cheese, vegetables you use. Don't estimate, actually weigh it. Most business owners estimate too generously.

3

Look up the purchase prices from your supplier

Check your latest invoice to see what you pay per kilo for each ingredient. Convert to price per gram: €12 per kilo = €0.012 per gram.

4

Multiply quantity × price per ingredient

60 grams of ham × €0.020 per gram = €1.20. Do this for each ingredient and add everything together. This is your total cost price.

5

Calculate your food cost percentage

Divide your cost price by your selling price excluding VAT and multiply by 100. If this is above 35%, you're not earning enough.

✨ Pro tip

Calculate the exact cost for your 3 top-selling sandwiches this week. These three items likely represent 60-70% of your sandwich sales, so getting their margins right first gives you the biggest profit boost.

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 →

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Frequently asked questions

Should I include VAT in my cost price calculation?
No, always calculate with prices excluding VAT. You pass VAT on to the tax authorities, so it doesn't belong in your margin calculation.
What if my supplier raises prices?
Update your cost price calculation immediately and check if your selling price still makes sense. Many business owners forget this step and unknowingly lose money for months.
What food cost is normal for a sandwich shop?
For simple sandwiches aim for 20-30%, luxury sandwiches 25-35%. If you're above 35%, it becomes difficult to cover your other costs and still make a profit.
Should I include packaging costs for takeout sandwiches?
Yes, absolutely. Bags, containers and stickers cost money and are part of the cost price. Usually it's around €0.15-€0.30 per sandwich depending on your packaging.
How often should I check my cost prices?
At least once a month, or immediately when your supplier raises prices. Food costs can rise quickly, especially for meat and dairy products.
How do I account for ingredients with different portion sizes?
Weigh your actual portions, don't guess. A 'slice' of cheese varies between staff members, so standardize portions by weight or count for consistent cost calculations.

kennisbank.ingredients_in_article

Butter kennisbank.ingredient_card_meta Cucumber kennisbank.ingredient_card_meta Tomato kennisbank.ingredient_card_meta
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

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