Sub-Merchant
Definition
A business that accepts card payments under a payment facilitator's master merchant account instead of holding its own merchant account.
A sub-merchant is a business that accepts card payments under a payment facilitator's (or aggregator's) master merchant account rather than holding its own merchant account. The sub-merchant is onboarded and underwritten by the PayFac, transacts through the PayFac's acquiring relationship, and is paid out by the PayFac. To the acquirer and the card networks, the PayFac — not the sub-merchant — is the accountable party for the portfolio.
The sub-merchant model is what makes fast onboarding possible: instead of applying for its own merchant account — a multi-week underwriting process — a business is boarded under a payment facilitator’s master merchant account in minutes.
The trade is control for speed. The sub-merchant does not hold the merchant account, so the PayFac controls onboarding, KYB, payout timing, and any reserve — and carries the primary chargeback and negative-balance exposure to the acquirer. Card-network rules also cap how long a business can remain a sub-merchant: above a defined annual card-volume threshold it must contract directly with the acquirer. Those thresholds and their exceptions vary by network and change over time — confirm the current rules with your acquirer.
For how the sub-merchant model compares to the direct-PSP, acquirer, marketplace, and merchant-of-record models, see the PSP vs PayFac operations reference.
Related terms
Acquirer
An acquirer (or acquiring bank) is a licensed financial institution that process...
Master Merchant Account
A master merchant account is the merchant account a payment facilitator holds wi...
Merchant of Record
The Merchant of Record (MOR) is the legal entity that appears on a customer's pa...
Payment Facilitator
A Payment Facilitator (PayFac) is a company registered with card networks that c...