Payment Reconciliation Simulator

A Vite + React application that simulates common payment reconciliation problems faced by businesses when matching internal transaction records with bank statements.

Features

This simulator demonstrates the following real-world reconciliation challenges:

🔍 Common Reconciliation Problems Simulated

1. Amount Mismatches

   • Payment processor fees not accounted for
   • Currency conversion discrepancies
   • Tax/fee calculation differences

2. Missing Transactions

   • Internal transactions without corresponding bank records
   • Bank transactions without internal records
   • Failed webhook deliveries

3. Duplicate Transactions

   • Double-click submissions
   • Retry logic errors
   • Processing system glitches

4. Timing Discrepancies

   • Settlement delays
   • Timezone differences
   • Processing cutoff times

5. Status Mismatches

   • Failed vs successful payment status
   • Pending vs completed transactions
   • Chargeback notifications

6. Special Cases

   • Chargebacks and disputes
   • Refunds processing delays
   • Unknown/unmatched payments

Getting Started

Prerequisites

• Node.js (v18 or higher)
• npm or yarn

Installation

# Install dependencies
npm install

# Start development server
npm run dev

# Build for production
npm run build

# Preview production build
npm run preview

Application Structure

src/
├── components/
│   ├── TransactionList.jsx    # Displays internal/bank transactions
│   ├── ProblemsView.jsx       # Shows detailed reconciliation problems
│   └── StatsOverview.jsx      # Summary statistics and metrics
├── data/
│   └── reconciliationData.js  # Mock data with realistic scenarios
├── App.jsx                    # Main application component
├── main.jsx                   # Application entry point
└── index.css                  # Styling and layout

Mock Data Scenarios

The application includes realistic mock data representing:

• 9 Internal Transactions ($1,284.73 total)
• 8 Bank Transactions ($1,346.50 total including fees)
• 7 Reconciliation Problems across different severity levels
• $58.82 in processing fees
• Multiple problem types for comprehensive testing

Problem Types Demonstrated

Problem Type	Severity	Description
Amount Mismatch	Warning	Internal vs bank amount differences
Timing Mismatch	Info	Date discrepancies between systems
Missing Internal	Critical	Bank transaction without internal record
Missing Bank	Critical	Internal transaction without bank record
Duplicate	Warning	Multiple transactions with same reference
Failed Payment	Info	Transaction marked as failed
Chargeback	Critical	Customer dispute resulting in reversal

Navigation

The application features three main sections:

1. Overview - Summary statistics and key metrics
2. Transactions - Side-by-side view of internal vs bank records
3. Problems - Detailed analysis of reconciliation issues

Use Cases

This simulator is perfect for:

• Training payment operations teams
• Understanding common reconciliation challenges
• Demonstrating reconciliation software capabilities
• Testing reconciliation algorithms and processes
• Educational purposes for fintech development

Technology Stack

• Frontend: React 18 + Vite
• Styling: Modern CSS with responsive design
• Icons: Lucide React
• Date Handling: date-fns
• Development: ESLint for code quality

Contributing

This is a demonstration application. To extend it:

1. Add new problem types in reconciliationData.js
2. Create additional components for new visualizations
3. Implement real-time reconciliation logic
4. Add export/import functionality for actual data

License

This project is for educational and demonstration purposes.