Vendor due diligence isn’t just a checklist to run through once—it’s an ongoing process that should reflect how critical the vendor is to your operations. This document helps you structure your review based on the level of risk involved, starting with basic checks and moving into more detailed evaluations when needed.

Each section is designed to help you focus on what matters—clear information, reliable records, and timely follow-ups. From legal status and certifications to audits and security practices, you can use this guide to spot what’s missing and decide what to ask next.
Fill in your review details, go step-by-step, and use the final score section to know how far along you are. The more complete the review, the fewer surprises later.