A Transaction Processing System (TPS) is a computerized information system designed to collect, store, modify, and retrieve the data generated by routine business transactions. It supports the daily operational activities of an organization by processing large volumes of repetitive transactions accurately, quickly, and reliably. Transactions may include sales, purchases, payments, payroll, inventory updates, banking operations, and customer orders. TPS forms the foundation of organizational information systems because it provides accurate and timely data that higher-level systems, such as Management Information Systems (MIS), Decision Support Systems (DSS), and Executive Information Systems (EIS), use for analysis and decision-making. Maintaining finances is one of the most important applications of a Transaction Processing System. It requires efficient handling of financial transactions while ensuring data integrity, security, and compliance with accounting standards. The input requirements for maintaining finances include accurate and timely collection of financial data. Inputs consist of sales invoices, purchase orders, payment vouchers, receipts, payroll records, tax information, bank transaction details, customer and supplier information, account numbers, transaction dates, amounts, and authorization details. Data may be entered manually, scanned through barcode readers, imported electronically from banking systems, or collected through online payment gateways. Validation mechanisms such as format checks, range checks, completeness checks, and authorization controls ensure that incorrect or duplicate entries are minimized. The processing requirements involve converting raw financial data into meaningful accounting information. The system verifies transaction authenticity, classifies transactions into