The short answer
Strong vendor selection criteria cover five areas: fit (capability, capacity, and experience in your industry), cost (total cost of ownership, not just unit price), risk (financial health, security, compliance, and concentration), service (support model, SLAs, and account team), and partnership (references, culture, and roadmap). Weight them by what failure would cost you for that specific purchase.
On this page
Every RFP response looks competent. Suppliers hire people whose entire job is to make proposals persuasive. The criteria you choose are how you look past the proposal to the company behind it.
Below are 12 criteria in five groups. Not all of them apply to every purchase. A one-time furniture order does not need a security review, and a payroll provider cannot be chosen on price alone. If you want to turn these into a scoring model with weights, see our guide on building a weighted vendor selection scorecard.
Fit: can they actually do the work?
1. Capability against your requirements
Start with the requirements you wrote, not the features they pitched. Ask suppliers to show, not tell. For software, that means a scripted demo using your scenarios. For services, it means a sample deliverable or a site visit.
2. Capacity and scalability
Can they handle your volume today and at your projected growth? A regional logistics provider may be excellent at your current volume and overwhelmed if you add two distribution centers next year. Ask about their largest current customer relative to you.
3. Relevant experience
Experience in your industry matters more in some categories than others. A staffing firm placing nurses needs healthcare credentialing experience. A janitorial supplier for an office park probably does not need industry specialization.
Cost: what will it really cost?
4. Total cost of ownership
Unit price is one line. Add implementation, integration, training, freight, maintenance, internal staff time, price escalators, and exit costs. A supplier with a higher unit price and lower switching costs can be cheaper over five years.
5. Pricing transparency and flexibility
Look for clear pricing you can predict, the right to reduce volumes, and caps on increases. Opaque pricing ("we'll scope it after kickoff") usually costs more than it appears.
Risk: what could go wrong?
6. Financial stability
A supplier that goes out of business mid-contract is expensive. For critical vendors, review financial statements or a credit report. For private companies that will not share statements, a business credit report plus references gives a partial picture.
7. Information security and data privacy
If the vendor will touch your systems or data, security is a pass or fail gate, not a weighted score. Common evidence includes a SOC 2 Type II report, ISO 27001 certification, a completed security questionnaire, and penetration test summaries. See our vendor due diligence checklist for the full list.
8. Compliance and ethics
Depending on your industry, this covers HIPAA, PCI DSS, export controls, sanctions screening, labor practices, and supply chain rules such as forced labor import restrictions. Treat hard legal requirements as gates.
9. Concentration and dependency
If this supplier would be your only source for something critical, weigh that risk. Sometimes the right answer is to pick the second-best bid for part of the volume to keep a backup supplier active.
Service: what happens after the contract is signed?
10. Support model and service levels
Who do you call when something breaks, and how fast do they respond? Ask for the actual SLA terms they will sign, not the marketing page. Ask who your day-to-day contact will be and whether they were on the sales calls.
Partnership: will this relationship hold up?
11. References
Ask for references from customers similar to you in size and industry, and at least one who has been a customer for more than three years. Then ask each reference what they would change about the supplier. A reference who cannot name anything is not being candid.
12. Roadmap, culture, and fit
For long-term relationships, ask where the supplier is heading. A software vendor shifting focus to a different market segment may deprioritize your needs. For services, see whether their team works the way yours does. Mismatched communication styles cause more friction than most contracts anticipate.
Gates versus weighted criteria
Some criteria are not trade-offs. A supplier either meets them or is out. Separate these before scoring:
| Criterion type | Examples | How to use it |
|---|---|---|
| Gate (pass or fail) | Required certifications, insurance minimums, sanctions screening, data residency, legal requirements | Remove any supplier that fails before scoring |
| Weighted | Capability, total cost, service, references, roadmap | Score and weight based on what matters for this purchase |
Mixing gates into a weighted score is a common mistake. A supplier can score well overall while failing a requirement that should have disqualified it.
Adjusting criteria by purchase type
| Purchase type | Criteria that deserve extra weight |
|---|---|
| Critical SaaS or IT services | Security, support model, financial stability, exit terms |
| Direct materials | Quality, capacity, delivery reliability, geographic risk |
| Professional services | Team experience, references, pricing transparency |
| Facilities and indirect services | Total cost, service levels, local coverage |
| Contingent labor | Compliance, fill rate, candidate quality |
Once a vendor is selected, the same criteria become the basis for ongoing performance reviews, so write them down in a form you can reuse.
Key takeaways
- Group vendor selection criteria into fit, cost, risk, service, and partnership.
- Use total cost of ownership, not unit price, to compare bids.
- Treat security, legal, and insurance requirements as pass or fail gates, not weighted scores.
- Adjust weights by purchase type and reuse the criteria for performance reviews.
Frequently asked questions
Capability against requirements, total cost of ownership, financial stability, security and compliance, service levels, and references from similar customers are the criteria that most often predict a successful relationship.
Rarely. Total cost of ownership matters more than unit price, and risk and service criteria often outweigh small price differences, especially for critical suppliers.
A gate is a requirement a supplier must meet to be considered at all, such as a required certification. Weighted criteria are scored and traded off against each other among suppliers that pass the gates.
Review financial statements for public or cooperative suppliers, and use business credit reports, payment history, and references for private companies that will not share statements.
Two or three is typical. Ask for customers of similar size and industry, and include at least one long-term customer.
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