How Payment Institutions Master Clearing & Settlement: A Full‑Chain Accounting Blueprint

Clearing and settlement (clearing + settlement) simply means “settling accounts and transferring money”. Using the Didi ride‑hailing scenario, the article explains the full‑chain clearing and settlement process of a leading payment institution.

The article then details three key points: top‑down reconciliation file generation, fund flow settlement, and inter‑institution processes at the central bank.

1. Five Business Systems

Understanding a payment institution’s accounting requires first grasping its business system architecture, which consists of five core subsystems:

(1) Transaction Payment System

This core handles collection, refund, and payment operations, linking platforms with merchants and channels.

(2) Clearing & Settlement System

Funds are collected from channels and settled to merchants, encompassing both clearing and settlement processes.

(3) Reconciliation System

It matches transaction records with clearing files and generates discrepancy entries.

(4) Accounting System

Records detailed bookkeeping for collection, payment, settlement, and virtual accounts such as payment, settlement, fee, and marketing accounts.

(5) Financial Accounting System

Manages both reserve‑fund accounting and the institution’s own capital accounting.

2. Global Three Account Sets

The institution’s funds are divided into three major account sets: customer virtual accounts, reserve‑fund accounts held at the central bank, and the institution’s own capital accounts.

2.1 Three Account Sets

Customer accounts track merchant collections and settlements; reserve‑fund accounts manage channel clearing balances; own‑capital accounts record fees, costs, and profits.

2.2 Overall Accounting Structure

All three account sets are managed respectively by the core accounting system, the reserve‑fund accounting system, and the financial accounting system.

3. Global Four Data Segments

The reconciliation process involves four data segments: accounting data, payment data, clearing data, and settlement data.

3.1 Four Data Segments

These segments form the basis for the reconciliation model, linking transaction and fund data.

3.2 Three In‑Transit Balances

When transitional accounts hold balances, three in‑transit categories appear: customer in‑transit, payment in‑transit, and fund in‑transit.

4. System Data Flow & Transformation

4.1 Data Sources

Platform data is pushed directly to the data transformation system, while channel clearing, settlement, and discrepancy data are forwarded from the reconciliation system.

Accounting data: platform payment records (200x series)

Clearing data: bank clearing files (300x series)

Settlement data: bank settlement statements (400x series)

4.2 Data Flow

Business, channel, and discrepancy data flow into the accounting core, where they are validated, aggregated, and transformed into accounting vouchers for the appropriate account sets.

5. Payment Institution Account Design

5.1 Account Setup

The design includes virtual accounts, three transitional accounts, and bank deposit accounts, covering merchant settlement accounts, pending settlement accounts, channel clearing accounts, already‑reconciled bank accounts, and bank deposit accounts.

6. Accounting Processing Elements & Principles

6.1 Processing Elements

Five dimensions guide accounting: business type, timing, data source, accounting rules, and involved accounts.

6.2 Processing Principles

Four stages (payment transaction, channel clearing, merchant settlement, channel settlement) and three types of errors (transaction, fund, customer) drive the accounting flow.

6.3 Three In‑Transit Types

Payment In‑Transit

Balances in the channel clearing account indicate mismatched records that require error handling.

Fund In‑Transit

Short or long fund balances arise from settlement discrepancies and are cleared via fund reconciliation.

Customer In‑Transit

Pending settlement balances reflect over‑ or under‑settlement to merchants, resolved by adjustment or supplemental entries.

7. Accounting Rules

The full accounting workflow comprises seven key stages: payment transaction, channel clearing, transaction error handling, merchant settlement, merchant error handling, channel settlement, and fund discrepancy reconciliation.

8. Detailed Accounting Example

A concrete example illustrates how two 10‑yuan payments are processed, how mismatched clearing files generate payment in‑transit, how supplemental entries resolve errors, and how fund shortfalls are cleared through short‑fall vouchers.

9. Settlement Transfer to Finance

Reserve‑fund accounting results (fees, interest) are transferred to financial statements at period end via an interim account for internal payable fees and interest.

In summary, the clearing and settlement framework can be captured as “1 diagram, 2 lines, 3 in‑transits, 4 data segments, 5 accounts, 7 stages”.