Why spend half your day buried in spreadsheets when you could have your monthly cost analysis done by lunch? The right approach lets you check every critical cost item that can make or break your profit in just 15 minutes. You'll spot problems before they destroy your month.
The 5 critical cost items for your monthly report
These 5 items account for roughly 80% of your operational costs:
- Food cost: Ingredient costs as % of revenue
- Labor cost: Personnel costs as % of revenue
- Inventory value: What's sitting in your cooler and storage
- Waste: What ended up in the trash
- Revenue per square meter: How efficiently you're using space
Food cost check (3 minutes)
Your food cost demands the most attention. Grab your 5 top-selling dishes and verify the cost price still makes sense.
💡 Example:
Restaurant with €45,000 revenue in March:
- Ingredient costs: €14,850
- Food cost: €14,850 / €45,000 = 33%
- Benchmark: 28-35% is standard
Conclusion: At the high end, check supplier prices
Total up ingredient receipts and divide by revenue excluding VAT. Above 35%? Money's bleeding out somewhere.
Labor cost check (2 minutes)
Labor typically becomes your largest expense. Sum up wages, social contributions and temp agency fees.
💡 Example:
Same restaurant:
- Total personnel costs: €18,000
- Labor cost: €18,000 / €45,000 = 40%
- Benchmark: 30-40% is standard
Conclusion: Looking good, but monitor closely
Formula: (Wages + social contributions + temp staff) / Revenue excluding VAT × 100
Inventory value check (5 minutes)
Estimate what's stored in your cooler, freezer and dry areas. This figure should remain relatively consistent month to month. From years of working in professional kitchens, I've seen too many operators ignore this until cash flow becomes tight.
⚠️ Watch out:
If inventory value climbs each month, you're over-purchasing. That locks up cash and raises waste risk.
Standard inventory equals 1-2 weeks of revenue. With €45,000 monthly revenue, you'd hold €10,000-€20,000 in stock.
Monitor waste (2 minutes)
Document what got tossed and the reasons. Waste exceeding 5% of purchases costs too much.
- Over-ordered for guest count
- Products past expiration
- Kitchen prep errors
- Unsellable leftovers
Revenue per square meter (3 minutes)
Divide monthly revenue by restaurant floor space. This reveals how efficiently you use available area.
💡 Example:
Restaurant of 150m² with €45,000 revenue:
- Revenue per m²: €45,000 / 150 = €300/m²
- Benchmark: €200-€400/m² is standard
Conclusion: Good efficiency
Digital vs. manual
You can handle this manually with Excel, but it'll eat more time. A system like KitchenNmbrs calculates these figures automatically and displays trends across multiple months.
What matters is doing it consistently. Better 15 minutes monthly than discovering at year-end that you've hemorrhaged money.
How do you create a 15-minute monthly report?
Gather all receipts and invoices
Get all ingredient receipts, personnel wages and other costs from the past month. Sort by food cost, labor and other costs.
Calculate your 5 key numbers
Work out: food cost %, labor cost %, inventory value, waste costs and revenue per m². Use the formulas from this article.
Compare with last month and benchmarks
Put your numbers next to last month and standard benchmarks. Big differences? Note what the cause might be and what action you'll take.
✨ Pro tip
Set up a simple 15-minute timer and tackle each section in order - food cost gets 3 minutes max, labor gets 2, inventory gets 5. Stick to the clock and you'll finish faster than your morning coffee break.
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
Do I need to include all costs in my monthly report?
No, stick with the big 5: food cost, labor, inventory, waste and revenue per m². These represent 80% of your costs. Check everything else quarterly.
How often should I create my monthly report?
Every month within 5 days of month-end. The faster you catch problems, the less damage they inflict on next month's performance.
What if my food cost suddenly jumps 5%?
First verify if suppliers raised prices. If yes, adjust menu pricing accordingly. If no, examine portion sizes and kitchen waste patterns.
Can I automate this process?
Yes, systems like KitchenNmbrs handle these calculations automatically. You just review trends and decide on actions.
What benchmark should I use for labor cost?
For restaurants, 30-40% of revenue works as standard. Above 40% makes profit difficult, below 30% might indicate understaffing or inflated prices.
Should I track different metrics for lunch versus dinner service?
Absolutely, especially if you have distinct menus or staffing levels. Lunch typically runs leaner margins but higher table turnover than dinner service.
⚠️ 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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