A supplier reliability score helps you objectively assess which suppliers are most reliable. Instead of going by gut feeling, you measure concrete performance like delivery time, quality and price stability. This way you prevent one bad supplier from disrupting your entire operation.
What is a supplier reliability score?
A supplier reliability score is a number between 1 and 10 that shows how reliable a supplier is. You assess different aspects like delivery time, product quality, price stability and communication. By tracking this systematically, you see which suppliers actually perform and which ones cause problems.
💡 Example:
Vegetable supplier A scores over 3 months:
- Delivery time: 8/10 (usually on time)
- Quality: 9/10 (always fresh products)
- Price stability: 6/10 (regular price increases)
- Communication: 7/10 (usually responds quickly)
Average score: 7.5/10
Why a reliability score matters
Without objective measurement you often work on gut feeling. Supplier B might be nice, but do they deliver on time? And what about quality? A score gives you hard data to base decisions on.
- Prevent surprises: You see trends before they become problems
- Negotiate better: Numbers give you arguments for price negotiations
- Spread risks: You know which suppliers you can use as backup
- Save time: No more debates about who the best supplier is
The 4 most important criteria
Focus on the aspects that affect your operation the most:
1. Delivery time (25%)
Measure whether suppliers stick to agreements. Late delivery = stress in the kitchen.
- 10 points: Always on time (95%+)
- 8 points: Usually on time (85-95%)
- 6 points: Regularly late (70-85%)
- 4 points: Often late (50-70%)
- 2 points: Unreliable (<50%)
2. Product quality (30%)
The quality of what you receive determines what you can serve.
⚠️ Note:
Poor quality costs you more than just money. It disrupts your entire menu if you suddenly don't have good ingredients.
3. Price stability (20%)
Suppliers who constantly raise prices make your cost calculations unreliable.
4. Communication & service (25%)
How quickly do they respond to questions? Do they solve problems? This determines how smoothly the collaboration runs.
Scoring in practice
💡 Example monthly evaluation:
Meat supplier C in March:
- 12 deliveries scheduled, 11 on time = 92% → 8 points
- 2 times poor quality out of 12 deliveries = 83% good → 7 points
- 1 price increase of 8% in March → 5 points
- Responds within 4 hours to messages → 9 points
Score March: (8×0.25) + (7×0.30) + (5×0.20) + (9×0.25) = 7.3/10
Actions based on scores
A score is only useful if you do something with it:
- Score 8-10: Main supplier, give more volume
- Score 6-8: Good backup, keep an eye on
- Score 4-6: Have a conversation about improvement points
- Score below 4: Look for replacement
💡 Example action plan:
Supplier scores 5.2 due to poor communication:
- Schedule conversation about response time
- Agree on fixed contact person
- Set up WhatsApp group for urgent matters
- Re-evaluate after 2 months
No improvement? Then look for an alternative.
Digital tracking vs. Excel
You can track scores in Excel, but that takes a lot of time. Apps like KitchenNmbrs have supplier management built in, where you can record scores and notes per supplier. This way you see at a glance which suppliers are performing and which need attention.
How do you calculate a supplier reliability score? (step by step)
Determine your criteria and weightings
Choose 4-5 criteria that matter for your kitchen. Give each criterion a weighting: delivery time 25%, quality 30%, price 20%, communication 25%. Adjust weightings based on what's most important for you.
Measure performance per criterion
Track with each delivery: was it on time, was the quality good, were there price changes, how was the communication. Give each criterion a score of 1-10 based on concrete performance that month.
Calculate the weighted total score
Multiply each score by its weighting and add up. Example: (8×0.25) + (7×0.30) + (6×0.20) + (9×0.25) = 7.4. Evaluate monthly and look at trends over multiple months for reliable data.
✨ Pro tip
Start with your 3 most important suppliers and track scores for 2 months before drawing conclusions. This way you get a feel for the system and reliable data.
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 often should I update supplier scores?
Evaluate monthly for a good picture. Weekly is too much work, quarterly is too little to see trends. Monthly evaluation gives you enough data to recognize patterns.
What if a supplier scores poorly one month due to circumstances?
Look at trends over 3-6 months, not just one bad month. Do discuss what went wrong and how they'll prevent it. One-time problems can happen, patterns are more concerning.
Should I tell suppliers about their score?
Yes, transparency works. Share quarterly scores and discuss improvement points. Many suppliers want to know how they're performing and where they can improve.
How many suppliers per product category do I need?
At least 2 for critical products like meat and fish. With 1 supplier you're vulnerable if problems occur. 3-4 suppliers per product category gives you good options.
Can I have scores calculated automatically?
Partly yes. Apps can store data and do calculations, but you need to assess quality and communication. Delivery time and price changes can be tracked automatically.
📚 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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