Vendor onboarding
Vendor onboarding without the email chase
Define what you need from a new supplier, send one secure link, and track progress until onboarding is complete. No more partial packets sitting in someone's inbox.
Related: W-9 collection · Vendor information form template · Vendor portal
The common problem
Vendors submit partial packets and onboarding stalls with no clear owner. W-9s arrive without insurance certificates. Banking details show up weeks after the vendor is already working. Supplier registration should not depend on who remembers to follow up.
- No single checklist—each department requests documents ad hoc over email
- Partial submissions marked complete because someone stopped chasing
- Vendor master data in the ERP does not match documents on file
- Renewals and re-certifications restart the same manual chase every year
How onboarding works
Define requirements
List W-9, certificate of insurance, vendor information, banking, and any agreements. Vendors see a checklist—not a vague email asking for 'everything we need.'
Send one link
Vendors complete items in any order. Progress is visible to your team so nothing sits unnoticed.
Close the packet
Reminders run until every required document is received. Once onboarded, monitoring continues for expirations and re-certifications.
Benefits
- Faster time-to-pay for approved vendors
- Consistent onboarding process across suppliers and locations
- Clear handoff from procurement to AP with one vendor record
- Ongoing monitoring after day one for expirations and re-certifications
Definition
What is vendor onboarding?
Vendor onboarding is the process of collecting required documents and setup information before—or shortly after—you engage a new supplier. It bridges procurement approval and accounts payable readiness: legal entity confirmed, tax form on file, insurance verified, payment details captured.
Supplier onboarding often fails because ownership is unclear. Procurement approves the vendor, AP needs a W-9, risk needs insurance, and nobody tracks the full packet. A structured onboarding workflow assigns clear requirements and follows up until every item is complete.
Process
A typical vendor onboarding workflow
Strong onboarding programs define a standard packet per vendor type. A contractor might need a W-9, certificate of insurance, and safety attestation. A software vendor might need W-9 and banking only. Keelstar lets you template requirements and send one secure link that shows vendors exactly what is outstanding.
- Create a vendor record with legal name, contacts, and vendor type
- Define required documents: W-9, insurance, information form, banking
- Send a secure vendor link with a visible progress checklist
- Validate submissions before marking items complete
- Automate reminders until the packet is closed
- Continue monitoring expirations after onboarding ends
After day one
Vendor registration vs. ongoing compliance
Onboarding is the first mile. W-9s go stale when vendors merge or change tax ID. Insurance certificates expire. Keelstar treats onboarding as the start of a vendor record—not a one-time upload. The same portal pattern supports re-collection and renewal without rebuilding the process.
Who runs vendor onboarding
- Procurement teams standardizing supplier setup across business units
- AP teams that cannot pay new vendors without a validated W-9
- Operations managers onboarding contractors before site access
- Finance leaders replacing ad-hoc email packets with a tracked process
Vendor onboarding document checklist
- Vendor information form: legal entity, DBA, address, primary contacts
- IRS Form W-9 with validated taxpayer identification number
- Certificate of insurance meeting contract or site requirements
- Banking and payment details for approved vendors
- Signed master agreement or policy acknowledgment if required
- Exclusion screening attestation for regulated industries
Need a tracked version? Set up a vendor portal or vendor onboarding workflow.
FAQ
Vendor onboarding is the process of collecting required documents and setup information before or shortly after you engage a new supplier—tax forms, insurance, contacts, and payment details.
Supplier onboarding is the same workflow from the vendor relationship side: verifying a new supplier is documented, insured, and payable before work begins or invoices are processed.
Most packets include a W-9, certificate of insurance, vendor information form, and banking details. Regulated industries may add exclusion screening or additional attestations.
You create a vendor record, define required documents, and send a secure link. Vendors submit through the link; your team tracks completion with reminders until every item is received.
Yes. The same workflow re-collects updated W-9s and insurance certificates when records expire or vendors change legal entity.
With a clear checklist and automated reminders, most packets close in days—not weeks. Delays usually mean unclear requirements or manual follow-up—not vendor unwillingness.
Yes. W-9 collection is a core onboarding step. See our W-9 collection workflow or use the free vendor information form template to define your packet.