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Keelstar

Invoice approval

Automate invoice approval routing with audit trails

Route invoices through approval matrices automatically. Keelstar logs every step and holds payment when vendor compliance gaps exist.

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Related: Invoice Approval · Vendor compliance · Invoice approval workflow · Invoice approval software · Vendor payment hold controls · All solutions

The common problem

Invoice approvals happen over email with no matrix enforcement. Approvers lack context and audits cannot reconstruct who approved what.

  • Approval rules differ by whoever forwards the email
  • No tie between vendor compliance and invoice release
  • Segregation of duties breaks under volume
  • Auditors request months of email threads

How invoice approval works

Submit

Vendors or internal teams upload invoices with PO and contract references attached to the request.

Route

Approvals follow your rules by amount, department, or vendor so the right owner signs off before payment.

Record

Every approval, rejection, and comment is stored for AP audits and dispute resolution.

Benefits

  • Clear approval chains without email forwarding
  • Visibility into overdue approvals blocking payment
  • Evidence for SOX and internal control reviews
  • Ties invoices to vendor compliance status

Routing

Route by amount, department, and vendor tier

Define approval matrices that route invoices automatically based on criteria your finance policy already uses.

Compliance gates

Hold invoices when compliance fails

Missing W-9, expired COI, or failed screening can block invoice approval until vendor status clears.

  • Matrix-based approver routing
  • Vendor compliance hold integration
  • Timestamped approval chain

Evidence

Export approval history for audit

Every approval, rejection, and hold decision exports with actor and timestamp for internal and external audit.

Who it's for

  • AP managers scaling invoice volume
  • Controllers enforcing segregation of duties
  • Finance teams linking compliance to payables
  • Audit teams reviewing AP controls

What good looks like

  • Approval matrix defined and enforced
  • Compliance holds block non-compliant vendors
  • Every approval step timestamped
  • Escalation rules for overdue approvals
  • Approval history exports on demand

Need a tracked version? Set up a vendor portal, vendor onboarding workflow, or browse all solution guides.

FAQ

Yes. Configure thresholds that determine required approvers.

Route your first invoice

Start free. Close the loop from vendor to payment.