Supplier Qualification vs Supplier Audit
The whole approval process vs one tool used within it.
What a comparison is not
A comparison is SPEQ’s reading of how two published documents differ. Neither is the right answer, it is not a determination of which applies to you, and neither is summarised in a way that replaces reading it.
Supplier qualification is the whole process of evaluating, approving, and maintaining a supplier — risk classification, assessment, approval, and ongoing monitoring. A supplier audit is one activity that may feed qualification: an on-site (or remote) assessment of the supplier’s quality system. Conflating the two leads to treating a passed audit as if it were full qualification.
| ASPECT | SUPPLIER QUALIFICATION | SUPPLIER AUDIT |
|---|---|---|
| Scope | The full lifecycle: evaluate → approve → monitor → requalify | A point-in-time assessment activity |
| Includes | Risk classification, questionnaires, audits, agreements, monitoring | Reviewing the supplier’s QMS against requirements |
| Frequency | Ongoing, with periodic requalification | Periodic, risk-based; not always required |
| When an audit is needed | For higher-risk suppliers, as one qualification input | N/A — it is the activity |
| Output | Approved-supplier status | Audit findings feeding qualification |
Use supplier qualification as the governing process for deciding whether and how to rely on a supplier — the risk-based lifecycle that produces approved-supplier status.
Use a supplier audit as one input to qualification, sized to risk — an on-site or remote assessment of the supplier’s quality system, not a substitute for the whole qualification process.
Qualification is the process; an audit is a tool inside it. A high-risk supplier may need an audit as part of qualification; a low-risk one may be qualified on documentation and questionnaires alone. The error is treating a clean audit as full qualification, or requiring an audit for every supplier regardless of risk — both miss the risk-based nature of qualification.
Supplier Qualification vs Supplier Audit: frequently asked questions
Common questions on how Supplier Qualification and Supplier Audit differ and when each applies.
Is a supplier audit required to qualify a supplier?
Not always. Supplier qualification is risk-based — a high-risk supplier (e.g., a critical raw material or contract manufacturer) may warrant an audit, while a low-risk supplier may be qualified through documentation, questionnaires, and performance history. The audit is one possible input.
What does supplier qualification include besides audits?
Risk classification, evaluation of quality documentation and history, questionnaires, quality agreements, approval, and ongoing performance monitoring with periodic requalification. An audit, where warranted, is one activity within this broader process.
How often should suppliers be requalified?
On a risk-based schedule, and when triggered by performance issues, nonconformances, or significant changes. Critical suppliers are reassessed more frequently; the requalification interval should reflect the supplier’s risk and track record.