Updated 2026-05-19

Payment portal

The customer's online invoicing and payment system.

Why it matters

Payment portals used by large customers—particularly in government, healthcare, and retail—require vendors to register and submit invoices through the portal rather than by traditional invoice delivery. Factors need to confirm that payment from these portals goes to the factoring lockbox rather than the seller bank account. Portals with automated ACH instructions can resist changes to payment routing, and some require formal documentation of the assignment before accepting payment direction changes. Sellers using customer payment portals should notify their factor early, since portal redirect processes can take weeks to complete.

How it appears in contracts

Payment portal considerations appear in the Payment Direction or Lockbox section of the factoring agreement. If a key customer uses a payment portal, the seller should notify the factor before funding and confirm whether the portal supports payment direction changes to a factor lockbox. If the portal cannot be updated to direct payment to the factor, the factor may treat those invoices as non-notification invoices requiring the seller to receive and forward payment. Delays in payment portal updates are a common cause of misdirected remittances in the initial weeks of a factoring program.

Related terms

• Payment redirect
• Notice of assignment
• Remittance
• Customer portal