8.1 The supplier scorecard
A scorecard functions as a vital feedback loop. Without objective performance data, supplier management can easily become stalled by subjective disagreements. Quantifying a supplier’s impact on your operation provides the clarity needed to either drive improvement or justify sourcing changes. The scorecard elevates the conversation from subjective dissatisfaction to a data-driven discussion about process stability.
The 5 core metrics
Section titled “The 5 core metrics”Measurement must be focused on metrics that directly impact engineering and production outcomes, rather than subjective ease-of-relationship scores.
1. On-time delivery (OTD)
Section titled “1. On-time delivery (OTD)”- Definition: The percentage of line items received within the defined delivery window (e.g. -2 / +0 days) of the Committed Date.
- The Rationale: Components arriving too early tie up working capital and warehouse space; components arriving late disrupt the manufacturing line. Predictability is the goal.
- The Metric: OTD must be measured against the supplier’s formal Commit Date, not just the original Requested Date, to accurately reflect their reliability rather than their lead time capability.
2. Quality (DPPM & escapes)
Section titled “2. Quality (DPPM & escapes)”- Definition: Defective Parts Per Million (DPPM) and the absolute count of Quality Escapes (incidents reaching your facility or the end customer).
- The Rationale: A single quality escape can have severe consequences for product reliability.
- Weighting: Quality is often considered a “gating” metric. Excellent delivery performance is irrelevant if the delivered components are defective.
3. Commercial discipline
Section titled “3. Commercial discipline”- Definition: The supplier’s adherence to quoted terms and agreements.
- Key Indicators:
- Unexpected price changes after PO issuance.
- Unannounced increases to Minimum Order Quantities (MOQ).
- Frequent invoicing discrepancies.
- Failure to honor NCNR (Non-Cancellable, Non-Returnable) mitigation agreements during demand shifts.
4. Responsiveness
Section titled “4. Responsiveness”- Definition: The average time taken to formally Acknowledge (ACK) a Purchase Order (PO) or respond to a Request for Quotation (RFQ).
- Standard Expectation: Acknowledgment within 24–48 hours.
- The Rationale: A Purchase Order (PO) that sits unacknowledged for days represents a “silent risk.” It assumes order placement without confirmation from the supplier’s planning system.
5. Lead time delta
Section titled “5. Lead time delta”- Definition: The variance between the Quoted Lead Time and the Actual Delivery Lead Time.
- The Rationale: Identifies suppliers who may underquote lead times to win business but consistently ship significantly later than the quoted average.
Cadence & data ownership
Section titled “Cadence & data ownership”To prevent scorecard reviews from devolving into debates over data accuracy, clear rules must be established regarding the source of truth.
The data alignment protocol
Section titled “The data alignment protocol”- Source of Truth: Your ERP/MRP system serves as the official record of receipt dates and quality events.
- Dispute Window: The raw scorecard data must be provided to the supplier early in the month (e.g. the 5th). A standard window (e.g. 5 business days) must be allowed for them to review and challenge specific line items with supporting evidence (such as a Proof of Delivery showing a carrier delay).
- Data Lock: After the dispute window closes (e.g. the 10th), the data set is locked for that period. This prevents retroactive adjustments during Business Reviews.
Review cadence
Section titled “Review cadence”- Calculation Frequency: Monthly.
- Review Frequency: Quarterly Business Reviews (QBR) for key Strategic/Approved suppliers; less frequently (e.g. semi-annually) for lower-tier suppliers.
The tiering system
Section titled “The tiering system”A weighted overall score (e.g. 0–100) should be used to categorize suppliers, which helps guide the sourcing strategy.
| Typical Metric | Weight | Recommended Target |
|---|---|---|
| Quality | 40% | 0 Escapes / < 500 DPPM |
| OTD | 30% | ≥ 98% |
| Responsiveness | 15% | ACK < 24 Hours |
| Commercial | 15% | 0 Pricing Variances |
Tiering categories
Section titled “Tiering categories”1. Preferred Supplier (Score > 90)
- Status: Consistently reliable partners.
- Action: These suppliers should be prioritized for NPI (New Product Introduction) designs, offered participation in Vendor Managed Inventory (VMI) programs, and considered when consolidating spend.
2. Approved Supplier (Score 70 – 89)
- Status: Represents the standard business relationship.
- Action: Performance must be monitored and a Corrective Action Plan (CAP) requested if a specific metric (like DPPM) falls below the acceptable threshold.
3. Conditional / Probation (Score < 70)
- Status: Indicates significant systemic risk. Often triggers a “New Business Hold,” meaning no new RFQs or part numbers are awarded.
- Action: An immediate improvement plan must be required. If performance remains consistently below the threshold over multiple quarters, exploring alternative sourcing options must begin.
Recap: Supplier Performance Evaluation
Section titled “Recap: Supplier Performance Evaluation”| Parameter | Metric | Target | Weight | Action (Score < 70) |
|---|---|---|---|---|
| Quality | DPPM & Quality Escapes | < 500 DPPM / 0 Escapes | 40% | Initiate immediate improvement plan; consider New Business Hold. |
| On-Time Delivery (OTD) | % line items within -2/+0 days of Commit Date | ≥ 98% | 30% | Monitor; request CAP if below threshold. |
| Responsiveness | Avg. time to ACK PO / respond to RFQ | < 24 hours | 15% | Monitor; request CAP if below threshold. |
| Commercial Discipline | Adherence to quoted terms (price, MOQ, invoicing) | 0 Variances | 15% | Monitor; request CAP if below threshold. |