Should SaaS become a PayFac, or an ISO?
Patrick Huynh
CEO
Should SaaS become a PayFac, or an ISO?
For SaaS companies, ISO is usually the better choice unless they are already operating at very large scale.
The difference is that a Payment Facilitator (PayFac) gives you full control over merchant onboarding, pricing, and payments — but with high cost and compliance responsibilities — while an Independent Sales Organization (ISO) is easier and cheaper to set up, but offers slightly less control.
Read more: PayFac vs ISO: What’s right for your SaaS platform?
Comparison at a glance: PayFac vs ISO
| Model | Timeline | Revenue model | Control over experience | Costs | Risk & compliance | SaaS fit |
| PayFac | 6–12+ months | High margin potential (set pricing, keep spread) | Full control (fast onboarding, embedded flows) | High setup ($30k–$50k+) + compliance staff | You own risk, underwriting, chargebacks | Works only at large scale |
| ISO | 24–72 hours for onboarding | Residuals/commissions from processor | Limited (bank controls onboarding + funding) | Low setup (referral free, registered ~$10k/card brand) | Bank/acquirer owns liability | Easier for early-stage SaaS |
| Fiska | Weeks | Revenue share with no platform fees | White-label, fast onboarding, omnichannel, universal tokenization | No platform fees, simple integration | Compliance, underwriting, and merchant support managed for you | Built for SaaS of all sizes |
PayFac: more control, more complexity
- Role: You act as the “master merchant,” onboarding sub-merchants under your umbrella.
- Merchant experience: Fast, embedded onboarding within your SaaS platform.
- Revenue: Higher margin potential since you set pricing and keep more of the spread.
- Risk & compliance: You’re responsible for KYC/KYB, fraud monitoring, chargebacks, and ongoing Visa/Mastercard reporting.
- Operational cost: High setup fees ($30k–$50k+), plus ongoing compliance, staff, and audit costs.
Best for: Very large SaaS platforms at scale where payments are a core strategic priority.
ISO: easier to start, less upside
- Role: You refer merchants to a processor or bank.
- Merchant experience: Slower onboarding, usually 24–72 hours. Faster only if you’re an ISO with liability.
- Revenue: You earn commissions or residuals, but have limited control over pricing.
- Risk & compliance: The acquirer holds most of the liability.
- Operational cost: Lower. Referral ISO models cost little to nothing, while registered ISOs pay ~$10k per card brand plus annual fees.
Best for: early-stage SaaS companies looking to add payments with minimal overhead.
The Fiska approach: benefits without the burden
Most SaaS companies don’t need to choose between PayFac or ISO. Fiska provides a white-label embedded payments solution that gives you the functional benefits of PayFac — like fast onboarding, pricing flexibility, and revenue share — without the high cost or regulatory overhead.
With Fiska, SaaS platforms get:
- No platform fees, removing fixed cost barriers
- Revenue share that grows alongside your business
- Strategic partnership and Level 2 merchant support, reducing operational load
- Universal tokenization, so merchants and customers stay connected across payment methods and channels
- True omnichannel solution, with online and in-person payments unified under your brand
- White-label flexibility, keeping your SaaS platform front and centre
FAQs: Payfac vs ISO for SaaS
- What is the main difference between a PayFac and an ISO?
A PayFac controls onboarding, pricing, and risk by acting as the master merchant. An ISO resells or refers merchant accounts, with the bank handling underwriting and liability. - Which model is easier for SaaS companies to start with?
The ISO model. It has lower costs and compliance requirements, but also lower control and margins. - Why do SaaS companies consider the PayFac model?
For faster onboarding, embedded experiences, and higher monetisation potential — though it requires capital, compliance staff, and ongoing reporting. - Do SaaS companies need to be PayFacs to offer embedded payments?
No. With providers like Fiska, SaaS platforms can deliver PayFac-like functionality without registration, compliance costs, or platform fees. - Can SaaS platforms support omnichannel payments without becoming PayFacs?
Yes. Fiska enables true omnichannel payments with universal tokenization, so merchants can serve customers seamlessly across online and in-person channels.