Small extras and incorrect rounding seem harmless, but cost you hundreds of euros per year. An extra scoop of fries here, a generous portion of sauce there - it adds up. Here's exactly how to calculate these hidden costs that drain your annual profits.
Where does your profit disappear unnoticed?
The problem lies in small things that nobody tracks. Your chef gives a bit more, you round down on purchases, you give free bread with every table. Each one seems like nothing, but together they can cost you thousands of euros per year.
💡 Example:
You give free bread with every table (costs €0.80 per basket). With 100 tables per day, 6 days per week:
- Per day: 100 × €0.80 = €80
- Per week: €80 × 6 = €480
- Per year: €480 × 52 = €24,960
Free bread alone costs you almost €25,000 per year!
Identifying your biggest loss items
Start by cataloging all 'small extras' in your business. Think about:
- Free side dishes: bread, amuses, olives, nuts
- Overly generous portions: 250g meat instead of your calculated 200g
- Incorrect rounding: €8.73 in ingredients rounded to €8.50
- Free drinks: coffee with dessert, welcome drink
- Extra garnish: more vegetables, double sauce
⚠️ Note:
Always calculate with your actual number of covers, not estimates. Check your POS system for exact numbers per day.
Calculate the impact per loss item
For each loss item, use this formula:
Annual loss = Cost per instance × Number of times per day × Working days per year
Calculate working days per year: number of days open per week × 52 weeks. For most restaurants this is 6 × 52 = 312 days.
💡 Example: Overly generous meat portions
You serve 250g steak, calculate for 200g. Steak costs €24/kg:
- Extra per portion: 50g × €0.024 = €1.20
- Steaks per day: 30 pieces
- Per year: €1.20 × 30 × 312 = €11,232
50 grams of extra meat costs you €11,232 per year!
Calculate incorrect rounding
Many entrepreneurs round ingredient costs for convenience. This seems practical, but costs money. Add up all rounding differences and multiply by your sales quantities. It's the kind of thing you only learn after closing your first month at a loss - every cent matters more than you think.
💡 Example: Rounding on pasta
Actual cost price pasta: €6.73. You calculate with €6.50 for convenience:
- Difference per portion: €0.23
- Pastas per day: 45 pieces
- Per year: €0.23 × 45 × 312 = €3,229
23 cents of rounding becomes €3,229 per year in losses!
Create the complete picture
Add up all loss items for the complete overview. Many restaurants lose 3-8% of their turnover through these kinds of leaks. With €400,000 annual turnover, that means €12,000 to €32,000 that disappears unnoticed.
Use a food cost calculator to track exact cost prices without rounding. Then you immediately see what each portion actually costs and can make conscious choices about where you want to be generous and where you don't.
How do you calculate annual loss from extras? (step by step)
Inventory all free extras and generous portions
Make a list of everything you give away for free or where you're more generous than calculated. Think of free bread, amuses, oversized meat portions, extra garnish. Also note where you round when calculating cost prices.
Calculate the cost per instance for each item
Determine what each free extra or generous portion costs. With 50 grams of extra meat at €24/kg that's €1.20 per portion. With free bread at €0.80 per basket that's €0.80 per table.
Multiply by your actual quantities per year
Count how often this happens per day and multiply by your working days per year. Formula: cost per instance × number per day × working days per year. Add up all items for your total annual loss.
✨ Pro tip
Track your 5 highest-volume dishes for 30 days - weigh every portion that goes out. Those tiny overages on your busiest items typically account for 60-70% of your annual losses.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
Was this article helpful?
Frequently asked questions
Do I really have to charge for every free extra?
You don't have to charge, but you need to know what it costs. Free bread at €0.80 per table becomes €25,000 per year with 100 tables per day. Focus first on your biggest loss items.
How do I know if my portions are too large?
Weigh random portions coming out of your kitchen for a week. Compare with what you use in your cost price calculation. More than 10% difference costs you serious money.
Can't I just raise my prices instead of giving less?
You can, but then you need to know how much extra to charge. If you lose €15,000 per year through extras, you need to charge an average of 4-6% more to compensate.
How often should I check this?
Check your biggest loss items monthly by weighing random portions. Do a complete calculation every quarter, because habits creep back in quickly.
📚 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.
Selling food? Then you need KitchenNmbrs
Whether you run a restaurant, food truck, catering company, or meal kit business — you need to know what each dish costs. KitchenNmbrs gives you that insight. Start your free trial.
Start free trial →