This document discusses how Enjay created a low-cost Tally on Cloud service by removing the biggest cost factor of software licensing costs. Typically, running Tally ERP requires separate servers for each customer and licenses for Windows server, Remote Desktop Services (RDS), and Microsoft Excel. Enjay developed their own open source operating system called Enjay Tiguin Linux that removes this software licensing cost. Their Tally on Cloud solution is now powered by this operating system, making it more affordable by only requiring hardware and networking costs. It can be deployed on public cloud, private cloud, or an organization's own office server.