Picture this: your supplier bills you for 50 kg of potatoes, but only 45 kg sit in your walk-in cooler. Without proper inventory verification, you're essentially paying for products you never received. Counting inventory before and after each delivery reveals exactly what arrived versus what appears on your invoice.
Why invoice verification through inventory matters
Your supplier invoices 50 kg potatoes, but only 45 kg made it to your storage. Without counting, you pay for 5 kg that never existed. At €2 per kg, this costs €10 per delivery. With 3 deliveries weekly, you're bleeding €1,560 annually.
⚠️ Heads up:
Most kitchens only glance at invoices, not actual deliveries. Weight errors, quality issues, or missing items slip through undetected.
The three-step counting method
This approach requires three actions: count existing inventory, count after delivery, then compare against your invoice. You'll spot exactly what arrived and whether it matches your bill.
💡 Example:
Inventory before delivery:
- Beef: 12 kg
- Salmon: 8 kg
- Potatoes: 25 kg
Invoice shows delivered:
- Beef: +15 kg
- Salmon: +10 kg
- Potatoes: +30 kg
Expected totals: 27 kg beef, 18 kg salmon, 55 kg potatoes
Verify weight and quality standards
Don't just count items—weigh them too. After managing kitchen operations for nearly a decade, I've seen countless "10 kg" salmon boxes containing only 9.2 kg. At €24 per kg, you're overpaying €19.20 for nothing. Quality matters equally: damaged produce or short-dated proteins deserve credits.
- Spot-check weights: Focus on expensive proteins and specialty items
- Examine expiration dates: Short shelf life reduces actual value
- Evaluate quality: Damaged goods warrant immediate credits
- Document issues: Record discrepancies during delivery, not hours later
💡 Example discrepancy:
Invoice: 10 kg salmon at €24 = €240
Actual weight: 9.1 kg
Shortage: 0.9 kg × €24 = €21.60
Action: Demand €21.60 credit immediately
Digital tracking beats paper trails
Paper inventory sheets disappear and make comparisons tedious. Digital systems (apps like KitchenNmbrs) automatically save counts and match invoices against inventory changes. This eliminates human error and speeds up the verification process.
Deciding which discrepancies deserve action
Contact suppliers immediately for discrepancies exceeding 2% of invoice value. Minor issues (under €5) often cost more to resolve than they're worth. But significant shortages (above €20) always warrant correction.
⚠️ Heads up:
File credit claims within 24 hours of delivery. Delays make it nearly impossible to prove supplier responsibility.
How do you perform invoice verification through inventory?
Count inventory before delivery
Create an overview of all products that will be delivered. Note exact quantities and weights of what's already in stock. This is your starting point for the comparison.
Check delivery upon arrival
Weigh and count all delivered products. Pay attention to quality, expiration date, and packaging. Note discrepancies immediately, before the driver leaves.
Count final inventory and compare
Count your total inventory after delivery. Compare with starting inventory plus invoice. Difference larger than 2%? Contact your supplier immediately for credit.
✨ Pro tip
Weigh 3 random boxes from each expensive delivery within the first 15 minutes. If weight discrepancies exceed 2%, verify the entire shipment before signing off.
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
How frequently should I count inventory for invoice verification?
Count for every delivery over €100 and conduct full inventory weekly minimum. Always verify expensive proteins and specialty ingredients upon arrival.
What's my next step when invoice and inventory don't match?
Contact your supplier within 24 hours maximum. Send photos documenting your counts and the invoice discrepancy. Demand credits for differences exceeding €20.
Can technology automate invoice verification completely?
Partially, yes. Apps track inventory changes and compare them against invoices automatically. However, physical counting and weighing still requires manual effort.
Which products deserve mandatory verification?
All high-value items like proteins, seafood, and specialty ingredients need checking. For produce, focus on quality assessment and expiration dates rather than just quantities.
How do I handle suppliers who resist making corrections?
Document everything meticulously with photos, weights, and timestamps. If problems persist, start sourcing alternative suppliers who handle discrepancies professionally.
Should I weigh every single box that arrives?
No, that's impractical. Spot-check 20-30% of expensive items randomly. If those show consistent discrepancies, then verify the entire delivery.
What percentage variance is acceptable before claiming credits?
Industry standard allows 1-2% variance for most products. Anything beyond 2% warrants investigation and potential credit claims, especially on high-value orders.
📚 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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