Tied-up working capital in inventory costs you thousands of euros per year in interest costs and cashflow. Many hospitality entrepreneurs have 2-4 weeks of inventory on hand, while 1 week is often enough. In this article you'll learn how to halve your inventory value without risks to your kitchen.
What is tied-up working capital in inventory?
Tied-up working capital is the money stuck in your inventory. Every euro of ingredients in your cooler and warehouse is money you can't use for other purposes. It costs you:
- Interest costs: If you use credit, you pay interest on inventory money
- Opportunity costs: Money you can't invest in marketing or renovations
- Spoilage and waste: The longer inventory sits, the more risk of loss
💡 Example:
Restaurant with €15,000 inventory value at 6% interest:
- Interest costs per year: €900
- Spoilage and loss (5%): €750
- Total costs: €1,650 per year
By halving inventory you save €825 per year
Calculate your current inventory turnover
Before you can optimize, you need to know how fast your inventory rotates. The inventory turnover formula is:
Inventory turnover = Annual purchases / Average inventory value
A good inventory turnover for restaurants is between 15-25 times per year. That means 2-3 weeks of inventory.
💡 Example calculation:
Restaurant with €200,000 annual purchases:
- Current inventory value: €20,000
- Inventory turnover: €200,000 / €20,000 = 10x per year
- That's 5.2 weeks of inventory (52 weeks / 10)
Too much! Aim for 15-20x turnover (2.6-3.5 weeks of inventory)
Identify slow-movers and dead stock
Not all inventory rotates at the same speed. Analyze by product category:
- Fresh products: Must be used within 3-5 days
- Meat and fish: Maximum 1 week inventory
- Dry goods: 2-4 weeks inventory acceptable
- Beverages: Can last longer, but tie up a lot of capital
⚠️ Watch out:
Check which products have been sitting in your inventory for weeks. These 'slow-movers' cost you the most in tied-up capital and spoilage risk.
Optimize your ordering frequency
Increase your delivery frequency to reduce inventory:
- Fresh products: Order 3-4x per week instead of once
- Meat and fish: Order 2x per week instead of weekly
- Dry goods: Order every other week instead of monthly
Yes, this means more deliveries and possibly higher delivery costs. But the savings on tied-up capital are usually greater.
💡 Calculation example:
From 1x to 2x per week ordering:
- Inventory reduction: 50% (from 7 to 3.5 days)
- Extra delivery costs: €20 per week = €1,040 per year
- Savings on tied-up capital: €5,000 x 6% = €300
- Less spoilage: €2,500 x 3% = €75
Net costs: €665 per year, but much better cashflow
Use ABC analysis for prioritization
Focus your attention on the products that tie up the most capital:
- A-products (80% of value): Daily check, minimal inventory
- B-products (15% of value): Weekly check, limited inventory
- C-products (5% of value): Monthly check, bulk purchasing allowed
Usually your most expensive meat, fish and beverage products are your A-category. This is where the biggest optimization gains are.
Implement just-in-time principles
Align your purchasing with your expected sales:
- Daily sales forecast: How many covers do you expect?
- Menu analysis: Which dishes sell best?
- Seasonal patterns: Summer vs. winter, weekday vs. weekend
⚠️ Watch out:
Start carefully with just-in-time. Better to have slightly too much than to run out. Gradually build your confidence in suppliers and forecasts.
Measure and monitor your progress
Track your inventory performance monthly:
- Inventory value: Count your total inventory every month
- Inventory days: (Inventory value / Daily purchases)
- Spoilage percentage: How much do you throw away?
- Stockout incidents: How often do you run out?
A system like KitchenNmbrs can help track these figures automatically and spot trends, without you having to count and calculate manually.
How to reduce tied-up working capital? (step by step)
Count your current inventory value
Go through your cooler, freezer and warehouse. Add up what everything is worth at purchase price. This is your starting point for improvement.
Calculate your inventory turnover
Divide your annual purchases by your average inventory value. Below 15x per year means too much tied-up capital.
Identify your most expensive products
Make a list of products that cost more than €500 per month. These are your A-products where optimization yields the most.
Increase delivery frequency
Order your A-products more frequently in smaller quantities. From weekly to 2x per week can already halve your inventory.
Measure your progress monthly
Track whether your inventory value is decreasing and your turnover is improving. Aim for 15-25x turnover per year for optimal cashflow.
✨ Pro tip
Check your inventory value every month and divide by 4 weeks. If this amount is higher than your weekly purchases, you have optimization opportunities.
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
What is a normal inventory value for a restaurant?
For an average restaurant, inventory value is between 1.5-3% of annual revenue. At €500,000 revenue, €7,500-€15,000 inventory is normal.
How often should I count my inventory?
For financial management, monthly is sufficient. For operational control, check your A-products daily and the rest weekly.
What if my supplier has minimum order quantities?
Find suppliers who accept smaller quantities, even at a slightly higher price. The savings on tied-up capital usually compensates for this.
How do I prevent running out of stock with less inventory?
Start with better sales forecasting and gradually build your confidence. Begin with 20% less inventory and adjust based on experience.
Which products should I optimize first?
Focus first on fresh products and expensive ingredients like meat and fish. These tie up the most capital and have the highest spoilage risk.
📚 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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