A marketplace coordinates relationships among participants alongside any sales the platform makes itself. That requires planning accounts, permissions, fees, tracking and responsibility for each transaction.

Marketplace payments depend on clear business rules

Before integrating, define who can sell, who receives payment, when funds are released, which fee applies, what each role can see and how disputes are handled. Otherwise, the code ends up making business decisions by default.

Issues to plan for

  • Seller registration and verification.
  • Fee rules and future changes.
  • Statuses each role can see.
  • Disputes, refunds and communication.
  • Reports to understand what happened with each payment.

Architecture matters

A single overloaded table or improvised rules make scaling expensive. The data model needs to represent who sells, buys, receives payment, administers and takes responsibility.

Warning sign

A marketplace is ready to grow when someone can reconstruct a complete transaction from the admin dashboard. Traceability is a product feature.