The correct answer is Union Finance Minister.Goods & Services Tax Council is a constitutional body for making pilotage to the Union and State Government on issues related to Goods and Service Tax.The GST Council is led by the Union Finance Minister and other members are the Union State Minister of Revenue or Finance and Ministers in-charge of Finance or Taxation of all the States.The Constitution (One Hundred and Twenty-Second Amendment) Bill, 2016, for the institution of Goods and Services Tax in the country was proposed in the Parliament and departed by Rajya Sabha on 3rd August 2016 and by Lok Sabha on 8th August 2016.