Sub-merchant

A sub-merchant is a seller that takes card payments under a payment facilitator’s master merchant account rather than opening a merchant account of its own.

How it works

• The facilitator or platform onboards the sub-merchant, runs its KYC/KYB, and assigns it an identity beneath the master account.
• The sub-merchant accepts payments immediately — no separate bank application, no weeks of underwriting.
• Funds route through the facilitator, which settles the sub-merchant its share on schedule.

The trade-off: a sub-merchant gains speed but sits inside the facilitator’s compliance and risk perimeter, not its own.

Why it matters

Sub-merchant onboarding is how a marketplace turns a sign-up into a paid-out seller the same day. Done well, it’s invisible; done poorly, sellers stall in verification, or worse, an unchecked seller creates fraud and chargeback exposure the platform inherits.

How Fynex does it

Fynex runs seller onboarding — KYC and KYB — inside your own flow, and as a licensed e-money institution it can hold each seller’s funds in a marketplace wallet and settle their share cleanly.