Goods and Service Tax (GST) is considered to be one of the biggest Indirect Tax Reforms in India. The New Model law is aimed to subsume various Indirect Taxes like the Excise Duty, Service Tax, VAT, CST, Luxury Tax, Entry Tax etc. The Central Government, after considering the suggestions given from Trade and Industry has recently issued the Revised Model GST Law. The GST Act provides insights on the detailed provisions regarding Supply, Levy and collection etc. This article tries to provide complete details for "How GST will work?"