Ans. IGST shall be levied and collected by Centre on inter-state supplies. IGST would be broadly CGST plus SGST and shall be levied on all inter-State taxable supplies of goods and services. The inter-State seller will pay IGST on value addition after adjusting available credit of IGST, CGST, and SGST on his purchases. The Exporting State will transfer to the Centre the credit of SGST used in payment of IGST. The Importing dealer will claim credit of IGST while discharging his output tax liability in his own State. The Centre will transfer to the importing State the credit of IGST used in payment of SGST. The relevant information is also submitted to the Central Agency which will act as a clearing house mechanism, verify the claims and inform the respective governments to transfer the funds.