Your inventory turnover ratio becomes the proof auditors need to see efficient operations. They scrutinize how you control purchasing and avoid tying up cash in slow-moving products. Smart inventory management can make or break your audit results.
Why inventory data matters so much to auditors
Investors and franchisors judge you on more than just profit. They want to see that you run a predictable and controlled operation. Inventory data reveals:
- How well you match demand and supply
- If you're tying up money in products that don't move
- How accurate your purchasing forecasts are
- If you have control over food waste
💡 Example:
Restaurant A and B both generate €50,000 monthly revenue:
- Restaurant A: €8,000 inventory value
- Restaurant B: €15,000 inventory value
Restaurant A turns its inventory 6.25x per month, Restaurant B only 3.3x. Which would you back as an investor?
The KPIs auditors examine
Several key figures appear on every auditor's checklist. You'll need these ready with clear explanations:
1. Inventory Turnover
This shows how many times you completely replace your inventory per month.
Formula: Monthly Food Cost / Average Inventory Value
💡 Example:
Your March numbers:
- Food cost March: €18,000
- Inventory beginning of March: €6,500
- Inventory end of March: €7,500
- Average inventory: €7,000
Inventory turnover: €18,000 / €7,000 = 2.57x per month
2. Days of Inventory
How many days can you operate with your current stock?
Formula: (Inventory Value / Daily Food Cost) = Number of Days
⚠️ Watch out:
More than 15 days of inventory often raises red flags. It suggests you're over-purchasing or carrying dead stock.
3. Dead Stock Percentage
What portion of your inventory consists of products unused for over 2 weeks?
How to prepare for the audit
Auditors want more than numbers—they need to understand your process. From tracking this across dozens of restaurants, you must explain these areas clearly:
- Purchasing frequency: How often do you order from each supplier and why?
- Seasonal patterns: How do you adjust your inventory for busy and slow periods?
- ABC analysis: Which 20% of your products drive 80% of your revenue?
- Waste tracking: How much gets discarded and why?
💡 Example of a strong presentation:
"Our inventory turns 8.2x monthly, meaning we refresh stock every 3.7 days. We order fish 3x weekly, meat 2x weekly, and dry goods weekly. This keeps inventory below 12% of monthly revenue."
Digital registration as a competitive advantage
Manual inventory counts create errors and waste time. Auditors value real-time visibility into your stock levels.
A digital system enables you to:
- Monitor inventory value daily
- Calculate days of inventory automatically
- Generate audit reports instantly
- Analyze purchasing trends
This demonstrates not just good performance, but systematic operations.
How do you prepare inventory data for an audit? (step by step)
Gather 6 months of historical data
Retrieve your inventory values from the last 6 months, plus your monthly food costs. This shows auditors trends and seasonal patterns.
Calculate your KPIs per month
Calculate for each month: inventory turnover, days of inventory, and dead stock percentage. Put this in a clear table.
Document your purchasing strategy
Write down why you make certain choices: supplier selection, ordering frequency, minimum inventory levels. Auditors want to understand the logic behind your numbers.
✨ Pro tip
Create a 12-week inventory performance dashboard showing your turnover ratios, waste percentages, and purchasing patterns by category. Having consistent quarterly data ready demonstrates the systematic management approach that impresses auditors most.
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 good inventory turnover for restaurants?
Most restaurants should aim for 6-12x per month. Fast food operations can achieve 15-20x, while fine dining typically runs 4-8x due to premium ingredients.
How often should I count my inventory for an audit?
Weekly counts over 3 months minimum for thorough audits. Daily movement tracking shows even greater professionalism and control.
What if my inventory figures are poor?
Stay honest about challenges but present your improvement plan. Auditors prefer transparency and concrete action steps over perfect numbers without context.
Should I separate fresh and dry goods in my inventory reporting?
Absolutely—fresh items should turn 12-20x monthly while dry goods turn 4-8x. Separating these categories shows you understand different product lifecycles.
How do I prove that my inventory figures are reliable?
Use digital systems with timestamps and cross-check with multiple staff members. Photograph your counts and maintain clear documentation trails for credibility.
Can I exclude low-value items like spices from my audit data?
Never skip anything—auditors check completeness first. Missing small items signals poor attention to detail and undermines your entire presentation.
📚 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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