Our proposal research intends to understand the GST (Goods and Services Tax) and the role GST in Indian Tax Scenario. This paper is an analysis of brief description of the historical scenario of GST. However, the idea of GST in India was mooted by Vajpayee government in 2000 and the constitutional amendment for the same was passed by the Loksabha on 6th May 2015 but is yet to be ratified by the Rajyasabha. It is a comprehensive tax system that will subsume all indirect taxes of states and central governments and unified economy into a seamless national market. It is expected to iron out wrinkles of existing indirect tax system and play a vital role in growth of India. This paper presents an overview of GST concept, explains its features along with its timeline of implementation in India. The paper is more focused on advantages of GST and challenges faced by India in execution. This study is based on secondary data of journals, articles, newspapers, internet and magazines.