Supplier onboarding is one of those processes that grows by accretion. Every past problem adds a requirement, nobody removes anything, and eventually bringing on a new supplier takes months. The cost of that delay is invisible — it shows up as sourcing decisions not made, alternatives not qualified, and single-source exposure that persists because the alternative was too slow to establish.

Tier the Process

One process for all suppliers is the root problem. A supplier providing packaging tape does not need the qualification a supplier providing a safety-critical machined component needs, and applying the same steps to both means the important one gets less attention than it should.

Three tiers works for most manufacturers. Low-risk suppliers of standard commodity items: basic checks, days not weeks. Standard suppliers: full commercial and quality review, sample approval. Critical suppliers of key components: site audit, process qualification, extended validation, business continuity review.

Define the criteria clearly enough that tier assignment isn’t negotiable, or everything drifts upward.

The Commercial Checklist

Legal entity verification and registration details. Financial health check, proportionate to how much you’ll depend on them. Insurance certificates. Agreed payment and delivery terms. Bank details verified through an independent channel — payment redirection fraud typically enters here, and a phone call to a known number prevents most of it.

The Quality and Technical Checklist

Relevant certifications, with expiry dates recorded so they can be tracked. First article inspection and sample approval. Agreed specifications and acceptance criteria, in writing. Non-conformance and corrective action process. For critical suppliers, an audit — and for the tiers below, a self-assessment questionnaire is usually proportionate.

The Operational Checklist

This is the tier most often skipped, and it causes most of the early friction.

Item master data set up correctly, with the right units of measure and conversions. Lead times agreed and recorded as planning parameters. Minimum order quantities and price breaks. Packaging and labelling requirements, including anything your receiving process depends on. Delivery locations and receiving hours. Named contacts on both sides for orders, quality issues, and escalation.

Getting units of measure wrong at setup produces errors for years afterward, and it’s a five-minute check.

Run Steps in Parallel

Most onboarding delay comes from sequential processing — each department waiting for the previous one. Commercial checks, quality qualification, and system setup can nearly all run simultaneously. Assign an owner for the whole process rather than passing a file between functions, and elapsed time typically halves without removing a single control.

Measure it

Track elapsed time from supplier selection to first order, by tier. If it’s measured in months for standard suppliers, your sourcing flexibility is constrained by administration rather than by the market — which is worth knowing, because it means your single-source risk is partly self-imposed.

Review the requirement list itself every couple of years. Steps added after a specific incident often outlive the risk that prompted them, and nobody removes a control once it exists unless someone is explicitly asked to.

ticktick.ai runs onboarding as parallel tracked workflows by supplier tier, with certification expiry monitoring and required master data enforced at setup.