Goods and Service Tax (GST) is a Value Added Tax (VAT), which hypothetically to be put into effect from April 2010, but because of conflicting interest of stakeholders and various political controversies it has been passed in both Houses of Parliament on Aug. 3, 2016. It alone indirect tax which influence the whole economy directly. It is aspiring as iron out wrinkles of current indirect taxes and has a far-reaching impact on GDP. India is a centralized constitutional economy. GST is applicable on all States and Union territories, known as CGST (Central Goods & Services Tax) and SGST (State Goods & Services Tax). The ill effects of cascading can be mitigated after tie up the central and states taxes in solitary tax. The economy is expected to pave the way of common national market as it will provide benefits to consumer by reducing overall tax burden of goods, which is currently estimated at 25% to 30%. Thus, introduction of Goods and Service Tax (GST) is a gigantic tax transform in contemporary ancient times. 
 Ignorance of law is no excuse but is liable to panel provisions, hence why not start learning GST and avoid the cost of ignorance. We all need to know, whether GST is willingly or imposed. This paper describes a brief introduction of current indirect tax structure and GST in India. What are challenging factor in implementation and what can be the opportunities of GST in India.