The document provides an overview of Goods & Services Tax (GST) implemented in India in 2017. It discusses the deficiencies of the previous indirect tax system that GST aimed to address, such as dual levy and multiple registrations. Key aspects of GST covered include the four-tier tax rate structure, input tax credit mechanism, treatment of inter-state supplies, and the major constitutional amendments and legislations passed between 2014-2017 to enable its rollout. Special features of GST highlighted are the single and destination-based tax, subsuming of various central and state taxes, and easier compliance through e-filing of common returns.