Goods and Service Tax (GST) is an all-inclusive tax charge on manufactures, sale and consumption of goods and services. The basic fundamental aim of GST is to make uniform the scattered indirect tax system in India and avoid the cascading effect in taxation. The impact going to make by GST will be a transformation in the entire tax system in India. GST is termed as biggest tax reform In Indian Tax Structure. The Taxation power has been well defined in Indian Constitution. The Constitution (122nd Amendment) Bill that seeks to usher in a Goods and Services Tax (GST) regime in the country will finally be taken up for discussion in Parliament. Finance Minister Arun Jaitley has been affirming that India will implement GST from 1st April 2016. This paper reveals an outline of GST concept, explains main features and what are problems created for effective implementation. The paper is more focused on advantages of GST and challenges faced by India in execution.