Supplier Evaluation and Selection: Criteria for Effective Evaluation

1. Systematic process: Supplier evaluation is a systematic process for assessing suppliers based on subjective and objective parameters.
2. Criteria of the evaluation process: Important key figures for the evaluations are quality, costs, reliability, innovation, service, financial stability and sustainability.
3. Aim of the supplier evaluation: A well-founded supplier evaluation identifies the best partners for the products supplied. As a result, the performance of the supply chain is ensured.
4. Appropriate methods: Methods such as scoring models, ABC analysis, utility value analysis or supplier audits support a structured evaluation of suppliers.
5. Preventing risks: Regular supplier evaluation helps to identify weaknesses at an early stage and improve them in a targeted manner.

Which criteria are important when selecting suppliers?

When selecting suppliers, various criteria such as reliability and quality are decisive, which can be weighted differently depending on the industry, company size and specific requirements. In principle, all relevant criteria can be divided into the following categories.

1. Quality (product quality, certificates, error rate ...)
2. Reliability (adherence to delivery dates, delivery flexibility ...)
3. Costs (price level, terms of payment ...)
4. Service (response time, technical support ...)
5. Innovation (development expertise, technology leadership ...)
6. Sustainability & compliance (environmental standards, social responsibility ...)
7. Financial stability (creditworthiness, annual financial statements ...)

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Qualitative vs. quantitative criteria in supplier evaluation

In supplier management, the distinction between qualitative and quantitative criteria in supplier evaluation is of central importance in order to obtain a comprehensive and objective picture of the performance of existing and potential suppliers.

Quantitative criteria

Quantitative criteria can be objectively measured, expressed in figures and easily compared. They are based on hard, verifiable data from purchasing, logistics or quality management in accordance with ISO 9001. They include the following criteria for supplier evaluation:

1. On-time delivery (%): Measures the percentage of orders that were delivered on time. A high on-time delivery rate indicates the reliability and predictability of the supplier, which is essential for a stable supply chain.
2. Price level (€): Evaluates the average price compared to the market. A competitive price level helps to optimize procurement costs and ensure profitability.
3. Defect rate (%): Indicates how many deliveries were faulty. A low defect rate indicates high product quality and reduces the amount of rework and complaints.
4. Complaint rate: Shows the number of complaints per order. It provides information about satisfaction with the products supplied and the supplier's willingness to provide service.
5. Average delivery time (days): Captures the time span from order to delivery. Short and constant delivery times increase flexibility and reduce storage costs.
6. Capacity utilization: Evaluates the supplier's ability to reliably deliver large quantities. High capacity utilization is particularly advantageous in the event of peak demand or bottlenecks.

Quantitative attributes are objectively measurable, comparable and can be easily automated - for example with ERP systems. They support the decision-making process using various, clear key figures and form the basis for sound, data-based decisions.

Qualitative criteria

Qualitative criteria are more subjective and are based on personal assessments, observations or experience with the supplier. They cover so-called "soft factors" such as communication, flexibility or willingness to innovate. They include key figures such as

1. Service orientation & communication: evaluates how reliably, friendly and solution-oriented the supplier responds to inquiries, problems or complaints. Open and professional communication promotes mutual trust and facilitates cooperation.
2. Flexibility with special requests: Measures the supplier's willingness and ability to respond to individual requirements or changes at short notice. Flexible partners make it possible to react quickly to market changes or customer requests.
3. Innovative ability: Assesses how actively the supplier introduces new ideas, technologies or improvements. Innovative suppliers help to strengthen the competitiveness and future viability of the company.
4. Willingness to cooperate & problem-solving behavior: Shows how constructive and cooperative the supplier is when faced with challenges or conflicts. A high willingness to cooperate makes it easier to find solutions together.
5. Sustainability & CSR commitment: Assesses the supplier's environmental and social awareness, for example through sustainable production processes, fair working conditions or commitment in the area of corporate social responsibility (CSR).
6. Image & brand reputation: Reflects how the supplier is perceived on the market and what reputation it enjoys with customers, partners or authorities. A positive image also strengthens the company's own corporate profile.

Qualitative criteria take into account soft success factors at the supplier, are important for long-term partnerships and cover aspects that numbers alone cannot capture.