How to Map Payment Information and Money Flows in Any Transaction Scenario

Payment systems may seem complex, but they aim to ensure smooth information and fund flows.

This article presents an analysis paradigm using a single diagram to clarify both flows across any payment scenario.

1. Understand Information Flow and Fund Flow

Information flow tracks the transmission path of payment instructions; fund flow tracks the movement of money between participants.

1.1 Information Flow

Describes how payment instructions travel between merchants, payment platforms, banks, and clearing institutions. Example: JD → WeChat → NetUnion → user's bank.

1.2 Fund Flow

Describes the transfer of monetary value between accounts, such as cash, bank deposits, or e‑wallet balances.

2. Key Elements to Analyze

2.1 Payment Scenario

Identify the context (e.g., POS purchase, e‑commerce checkout, wallet recharge, bank transfer) to determine participants, tools, and settlement mechanisms.

2.2 Participants

List all entities involved (consumers, merchants, payment providers, clearing institutions, central bank, banks).

2.3 Participant Accounts

Identify account types (consumer bank account, merchant settlement account, payment provider account, central bank reserve account) and their role in fund movement.

2.4 Payment Methods

Different methods (e.g., WeChat wallet, quick payment, card) generate distinct information and fund flows.

2.5 Payment Types

Consumption, transfer, recharge, withdrawal, POS, etc., each affecting flows.

2.6 Clearing Mode

Distinguish internal clearing (same institution) from cross‑institution clearing, which adds complexity.

3. General Analysis Approaches

Choose either object‑centric or account‑centric nodes. Example diagrams illustrate both.

3.1 Object‑Centric Information Flow

Trace payment instructions between entities.

3.2 Account‑Centric Fund Flow

Map money movement across accounts.

3.3 Unified Model

Combine participants and accounts into a single model.

Identify and mark all participants.

Determine associated accounts and their owners.

Analyze the transaction process to map information exchange.

Mark fund outflows and inflows to analyze fund flow.

4. Practical Case

Consumer pays 10 CNY for breakfast via WeChat wallet; merchant later withdraws the amount. The payment uses internal clearing, while the withdrawal triggers cross‑institution clearing.