ISO vs PayFac
Two different business models for providing payment processing services to merchants.
What is ISO vs PayFac?
An ISO (Independent Sales Organization) is a third-party company that resells merchant accounts from acquiring banks—each merchant gets their own direct account. A PayFac (Payment Facilitator) processes payments under its own master merchant account, with clients as sub-merchants. ISOs offer more customization and potentially lower rates; PayFacs offer faster onboarding and simpler management. The choice affects pricing, control, and relationship structure.
Why It Matters
Understanding ISO vs PayFac helps you evaluate payment partners. If you need quick setup with minimal paperwork, PayFac is ideal. If you want rate negotiation, direct bank relationships, and long-term cost optimization, an ISO relationship offers more flexibility. High-volume or complex businesses often graduate from PayFac to ISO arrangements.
Related Terms
Payment Facilitator (PayFac)
A company that enables merchants to accept payments under its master merchant account.
Merchant Account
A bank account that allows businesses to accept credit and debit card payments.
Payment Processor
A company that handles credit card and debit card transactions between merchants and banks.
Underwriting
The risk assessment process for approving merchant accounts and setting terms.
Frequently Asked Questions
Generally ISO for established businesses. ISOs offer interchange-plus pricing and rate negotiation. PayFacs typically charge flat rates that subsidize quick onboarding and risk.
Yes, and many growing businesses do. You'll go through underwriting for a new merchant account. Your processing history with the PayFac can help with approval.
Speed to market. PayFacs can approve you in hours with minimal documentation. ISOs require more thorough underwriting. For startups and small businesses, PayFac simplicity may outweigh cost differences.
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