Payments Glossary · Players & Brands
Payment Facilitator (PayFac)
Also called PayFac, payfac, payment aggregator, master merchant
A company that holds one master merchant account and boards you as a sub-merchant underneath it. Square and Stripe work this way.
What it is
A payment facilitator holds a master merchant account with an acquirer and onboards businesses as sub-merchants underneath it, rather than each business getting its own direct merchant account. The PayFac does the underwriting, owns the risk of its sub-merchant portfolio, handles funding, and typically prices at a simple flat rate. Square, Stripe, PayPal, Toast and most modern SaaS-with-payments platforms operate as payment facilitators or on PayFac-style models. The merchant-visible consequences are immediate and mostly positive at the start. Onboarding takes minutes instead of days because underwriting is instant and portfolio-level rather than merchant-level. There is usually no long contract. Pricing is a single blended number — 2.6% + 15¢, 2.9% + 30¢ — that requires no explanation. That simplicity is the entire product. The consequences on the other side are equally real. Because the PayFac carries the risk of instantly-approved merchants it barely underwrote, it manages that risk after the fact — through account freezes, reserves and abrupt terminations. And because flat-rate pricing averages across every card type, a merchant with heavy debit or low-ticket volume subsidizes the merchants with premium rewards cards. Becoming a full PayFac yourself is expensive: industry cost breakdowns put it at $2.5M–$7M upfront and $500K–$1.5M annually over 12–18 months, including network registration of $75K–$100K/yr, sponsor bank setup of $50K–$250K, BSA/AML programs of $100K–$500K, and PCI DSS Level 1 at $50K–$150K/yr.
Why it matters to your business
If you're on Square, Stripe, PayPal or Toast, you don't have a merchant account — you're a sub-merchant on somebody else's. That's fine, and often the right choice under about $15,000–$25,000 a month. Above that, flat-rate pricing starts costing you real money, and you have no interchange visibility with which to argue. The other thing to know: as a sub-merchant, your funds can be held by a risk decision you can't appeal to a human. If your business has seasonal spikes, large tickets, or deposits taken well before delivery — all normal in Southwest Florida — that's the scenario that trips PayFac risk models.
Where it gets contested
The PayFac model's structural weak point is exactly what makes it fast: instant approval means real underwriting happens after money starts moving. That produces the account-freeze complaints that define PayPal's, Square's and Stripe's merchant reputations. Merchants describe funds held without warning, appeals routed to email-only support, and no named human to call. The platforms' defense is legitimate — they are underwriting millions of merchants they never met, and fraud in that population is real — but the experience for a legitimate business caught in it is brutal, and the absence of a phone number is a choice. The second issue is pricing. Flat-rate PayFac pricing is genuinely cheaper for a very small merchant and genuinely more expensive above roughly $15,000–$25,000 a month as a rule of thumb, where interchange-plus pricing starts to win. That crossover is well understood inside the industry and almost never disclosed at signup. Third, for software companies: PayFac-as-a-Service vendors have proliferated, and their terms vary widely. Rainforest's 2026 comparison flags Finix's channel-conflict risk from direct merchant sales, Tilled's monthly-fee-plus-rev-share structure limiting upside, and legacy processors trapping platforms with token export fees and non-solicit clauses. Those are the contract traps to read for.
How to check it yourself
Add up last month's total processing fees and divide by total card volume. That's your effective rate. If you're on a flat-rate PayFac above roughly $15,000–$25,000 a month and your effective rate is at or above 2.7%, get one interchange-plus quote for comparison. You don't have to switch; you have to know the number.
Receipts
Claims above that are checkable, with where to check them. Published so you do not have to take anyone's word for it.
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Full PayFac status is estimated at $2.5M–$7M upfront and $500K–$1.5M annually over 12–18 months, including $75K–$100K/yr network registration and $50K–$150K/yr PCI DSS Level 1
payram.com ↗ -
Rainforest's 2026 PayFac platform comparison flags Finix channel-conflict risk, Tilled's fee structure limiting upside, and legacy processors trapping platforms with token export fees and non-solicit clauses
rainforestpay.com ↗ -
Square's published flat rates are 2.6% + 15¢ in person on the Free plan, 3.3% + 30¢ online, with no contract and no early termination fee
squareup.com ↗