Electronic Funds Transfer (EFT) refers to the electronic movement of money from one bank account to another without the need for physical cash, cheques, or other paper-based payment instruments. In the context of E-Commerce, EFT is a fundamental mechanism that enables buyers, sellers, banks, payment service providers, and other financial institutions to conduct transactions quickly and securely through electronic networks. It supports online purchasing, payment of bills, fund transfers, subscription payments, refunds, and many other commercial activities. EFT operates through computerised communication networks that connect customers, banks, merchants, and payment intermediaries. When a customer makes an online purchase, the payment instruction is transmitted electronically to the relevant financial institution. The customer's account is debited and the merchant's account is credited, either directly or through an intermediary payment system. This process eliminates many limitations associated with traditional payment methods and makes electronic commerce more convenient and efficient. There are several forms of EFT used in E-Commerce. Automated Teller Machine (ATM) transactions are an important example because they allow customers to electronically transfer or withdraw funds using bank accounts. Point-of-Sale (POS) transactions electronically transfer funds when customers pay for goods or services using debit or credit cards. Electronic bank transfers allow funds to move between accounts through internet banking and mobile banking systems. Direct deposits and direct debits are also forms of EFT, where funds are automatically credited or debited from an account according to an authorised instruction. In India, EFT is supported by several electronic payment systems. National Electronic Funds Transfer (NEFT) enables customers to transfer money between bank accounts electronically. Real Time Gross Settlement (RTGS) is primarily designed for high-value transactions and settles transactions individually in real time. Immediate Payment Service (IMPS) enables instant interbank fund transfers and is available through various banking channels. The Unified Payments Interface (UPI) has further transformed E-Commerce payments by allowing customers to transfer money directly between bank accounts using mobile applications, virtual payment addresses, QR codes, or other supported mechanisms. These systems have significantly increased the speed and accessibility of digital transactions. The EFT process generally involves several stages. First, the customer initiates a payment through a bank, payment application, card, internet banking facility, or other electronic channel. The transaction details are transmitted through a secure electronic network to the appropriate financial institution or payment processor. The customer's identity and account details are authenticated, and the availability of sufficient funds is checked. After successful authorisation, the customer's account is debited. The transaction is then processed through the appropriate clearing or settlement mechanism, and the merchant or recipient's account is credited. Finally, electronic records of the transaction are generated for both parties.