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ArticleDecember 10, 20252 min read

Building a Compliant Marketplace Payments Framework (Step-by-Step)

By LiquidTrust Team
Building a Compliant Marketplace Payments Framework (Step-by-Step)

By The LiquidTrust teamLiquidTrust is a payments innovation company serving FIs, B2B platforms and SMBs globally.

“Marketplace payments compliance” is a system design challenge—licensing, custody, verification, monitoring, and audit evidence must be embedded into your flows. This guide outlines a compliant framework you can implement now.

1) Stay out of the flow of funds (licensing & custody)

  • Use licensed custody/escrow so the marketplace never holds user funds.
  • Keep client funds in segregated accounts; document custodial structures and release logic.
  • Align flows to your jurisdictional obligations and partner with regulated rails.

2) Embed KYB/KYC + AML where it happens

  • Progressive verification at onboarding and at key risk transitions (new country, higher ticket, new payout).
  • Continuous screening and transaction monitoring with clear operator queues and SLAs.
  • Store verification artifacts with audit-ready evidence.

3) Make your subledger the system of record

  • Track every state, split, fee, and adjustment per participant.
  • Reconcile to master custodial accounts continuously; auto-surface exceptions for review.
  • Generate payout statements and event logs that pass audits without manual stitching.

4) Design for exceptions from day one

  • Model refunds, partial releases, reversals, and corrections as first-class states.
  • Build an operator console with evidence timelines and action controls.
  • Ensure idempotent APIs and reliable webhooks so actions are traceable and safe.

5) Global by default (if you have cross-border ambitions)

  • Support FX, sanctions screening, and local payout schemes through your provider.
  • Standardize release conditions; localize verification types without changing your core model.

Recommended follow-ups:

  • The State of B2B Marketplace Payments in 2025
  • How to Accept Payments on a B2B Marketplace
  • Five Lessons from Marketplace Compliance

Learn more about how LiquidTrust helps B2B marketplaces build payment trust.