Goods and Services Tax (GST) is a major tax reform in India that aims to unify indirect taxes into a single tax. GST passed in the Lok Sabha in May 2015 and aims to make India a unified market. It replaces existing taxes such as VAT, service tax, and other duties. GST has a dual model with Central GST and State GST applied to all goods and services. It follows a destination-based principle where taxes are levied at the destination of consumption. The GST rate structure has lower and standard rates applied to goods and services. Threshold limits and compensation mechanisms were delayed due to disagreements but were eventually resolved.