The Japan E-commerce Payment Market Size is projected to reach US$ 297.87 Billion by 2026. E-Commerce payment importance is growing in Japan modern economy. It implements a commodity way for consumers to acquire goods and services through electronic means as they are easy, quick, and convenient. E-Payment is a method that provides tools for the payment of services or goods carried on the internet. It is the ease of transaction processing in e-commerce between consumers and sellers. Japan e-commerce market presents an opportunity for international merchants to E-court an audience with money to spend and an appetite for consumer electronics and fashion.