The 3 Metric Test That Tells You If Your Supplier Is Actually Good or Just Familiar
Your supplier rating should be data. "They are usually good" is not a supplier performance evaluation. Late delivery percentage, defect rate, and price competitiveness are.
Metric 1: On Time Delivery Rate
Pull your last 20 purchase orders from each key supplier. Count how many delivered on or before the agreed date. Divide by 20. That is their on time delivery rate. Score 3 if on time delivery exceeds 90%. This supplier respects timelines. Your production schedule is safe with them. Score 2 if on time delivery falls between 70% and 89%. They are late 1 in 4 orders. You compensate by ordering earlier or keeping safety stock. Both cost you money. Score 1 if on time delivery is below 70%. This supplier is unreliable by any standard. You are managing around their weakness. Every late delivery from them creates a domino effect through your warehouse, your production, and your customer commitments. Most Dubai trading companies do not track this metric. They feel the delays but do not quantify them. "Sometimes late" could mean 15% or 50%. Without the number, you cannot compare suppliers objectively or hold them accountable with evidence.
Metric 2: Quality Acceptance Rate
From those same 20 orders, count how many were accepted without quality issues at receiving inspection. Partial rejections count as failures. Full returns count as failures. Score 3 if quality acceptance exceeds 95%. Near zero defects. Material goes straight from receiving to storage or production. Score 2 if acceptance falls between 85% and 94%. One or two issues per 20 orders. Manageable but each issue requires inspection time, return logistics, and replacement lead time. Score 1 if acceptance is below 85%. Every 5th delivery has a quality problem. Your receiving team spends more time inspecting than storing. The hidden cost: your production team builds workarounds for inconsistent input quality. They sort material before use. They over order to compensate for expected rejects. Both waste time and money. A supplier with great delivery speed but a 15% defect rate is not a good supplier. They are a fast supplier with a quality problem. Speed without quality creates more work, not less.
Metric 3: Price Competitiveness Over Time
Compare this supplier's pricing for your top 5 purchased items against 2 other suppliers who can deliver the same items. Not their list price. Their actual invoiced price over the last 6 months. Score 3 if they are within 3% of the lowest available price. Competitive. Their pricing is in line with the market. Score 2 if they are 4% to 10% above the lowest price. You are paying a premium. The premium may be justified by better quality or faster delivery. But you should know the number. Score 1 if they are more than 10% above the lowest price. Unless they deliver in half the time or provide zero defects, you are overpaying out of habit. Habit is not a procurement strategy.
What Your Score Means Per Supplier
7 to 9 points: Preferred supplier. Reliable, quality, competitive. Increase their share of your purchasing if possible. 4 to 6 points: Acceptable with conditions. Identify which metric scores lowest and address it directly. If delivery is weak, negotiate penalties or switch to a backup for urgent orders. If quality is weak, implement incoming inspection. If price is high, renegotiate with competitive data. 1 to 3 points: Under review. A supplier scoring below 4 is costing you more than their prices suggest. The late deliveries, the defects, and the premium pricing compound into a total cost of ownership that exceeds what a better supplier charges outright. ERPNext tracks all 3 metrics automatically from your transaction data. Every purchase receipt records delivery date, accepted quantity versus ordered quantity, and unit pricing. The supplier scorecard feature aggregates these into ratings updated with every transaction. An enterprise implementation configures weighted scoring based on which metrics matter most to your business. At AED 1,999 per month, supplier analytics are included in the purchasing module. After 3 months of transaction data, the system ranks your suppliers by measurable performance rather than perceived reliability. Score your top 5 suppliers right now using these 3 metrics. If any supplier you consider "good" scores below 5, the gap between perception and performance is costing you money.
Frequently Asked Questions
Does ERPNext calculate supplier scores automatically?
Yes. ERPNext includes a supplier scorecard feature that calculates scores based on delivery performance, quality acceptance, and pricing from your actual transaction data. Scores update with every purchase receipt and quality inspection.
Can we weight the scoring metrics differently?
Yes. If on time delivery matters more than price for your business, you can assign higher weight to that metric. ERPNext supports custom weightings so the overall score reflects your specific priorities.
How much transaction data do we need before the scores are meaningful?
A minimum of 10 to 15 transactions per supplier gives statistically useful scores. For most active suppliers, this means 2 to 3 months of purchasing data. The system starts scoring from the first transaction and accuracy improves with volume.
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