Payment Facilitator
What Is a Payment Facilitator? Definition and How It Works
Definition
A Payment Facilitator (PayFac) is a master merchant that enables sub-merchants to accept card payments under the PayFac's own acquiring agreement, onboarding sellers quickly without requiring each to establish their own direct acquiring relationship.
How it works
The Payment Facilitator model was formalised by Visa and Mastercard to enable platforms and marketplaces to onboard sellers for card acceptance at scale. Rather than each sub-merchant applying for their own merchant account the PayFac has a master merchant account and registers sub-merchants under its own umbrella using simplified due diligence processes to onboard sub-merchants quickly, often same-day or in minutes.
PayFac registration with Visa and Mastercard is required. The PayFac must conduct sub-merchant due diligence, monitor sub-merchant transaction activity for fraud and compliance, and accept liability for sub-merchant chargebacks and scheme violations.
The PayFac model involves three tiers: the acquirer that holds the PayFac's master account and settles funds; the PayFac that onboards sub-merchants and manages the payment stack; and the sub-merchants who are the end businesses accepting payments. Settlement flows from the acquirer to the PayFac's pooled account and the PayFac distributes to sub-merchants on its own schedule.
Well-known PayFacs include Square, Stripe, PayPal for sellers via Braintree, and Shopify Payments.
Why it matters
PayFac model enables same-day or minutes-based payment enablement for sellers versus days-to-weeks for direct merchant account approval. The PayFac bears chargeback and fraud liability for sub-merchants; a high-fraud sub-merchant's disputes become the PayFac's problem operationally and financially. Operating as a PayFac requires formal Visa/Mastercard registration, compliance infrastructure, and ongoing scheme audits, all representing a significant operational commitment. PayFacs earn the spread between the acquirer's wholesale interchange rate and the rate charged to sub-merchants plus potential additional platform fees. Scheme rules require PayFacs to monitor sub-merchant transaction patterns for fraud, excessive chargebacks, and prohibited activity.
With PXP
PXP supports payment facilitator models and provides PayFac-as-a-service infrastructure for platforms that need to embed payment acceptance for their sub-merchants. PXP's platform handles sub-merchant onboarding, transaction monitoring, and settlement distribution with scheme-compliant PayFac architecture.
Frequently asked questions
What is the difference between a PayFac and an ISO?
An ISO is a sales and distribution agent for acquirers: ISOs sign up merchants who then receive their own direct merchant accounts. The ISO does not hold transaction liability. A PayFac is a master merchant that processes on behalf of sub-merchants; the PayFac holds the acquiring agreement and the liability. ISOs introduce merchants to acquirers (no ongoing transaction liability); PayFacs process transactions for sub-merchants (ongoing chargeback and fraud liability). PayFacs can onboard sub-merchants much faster because sub-merchants don't go through full direct acquirer underwriting.
What due diligence does a PayFac need to do on sub-merchants?
Visa and Mastercard require PayFacs to conduct Know Your Business (KYB) due diligence on sub-merchants before activating payment processing. Minimum requirements typically include: verification of business legal name and registration; beneficial owner identity verification for AML/KYC; OFAC/sanctions screening; and prohibited business category check. Failure to conduct adequate sub-merchant due diligence exposes the PayFac to scheme fines and potential deregistration.
What is PayFac-as-a-service?
PayFac-as-a-service is an infrastructure product where a payment provider operates the PayFac registration, acquirer relationship, compliance, and sub-merchant management infrastructure on behalf of a platform. The platform white-labels the PayFac capabilities without obtaining its own PayFac registration. The platform benefits from fast sub-merchant onboarding and payment revenue opportunities; the PayFac-as-a-service provider handles scheme compliance.
What are the financial risks of the PayFac model?
The primary financial risk is sub-merchant chargeback and fraud liability: if a sub-merchant generates excessive chargebacks and ceases operations the PayFac is responsible for refunding those chargebacks. PayFacs mitigate this through: sub-merchant underwriting limits; rolling reserves holding back a percentage of sub-merchant settlements; real-time fraud monitoring; and contractual indemnification from sub-merchants.
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