The purpose of this guidance note is to bring clarity about the impact of GST,which would come into force with effect from 01.07.2017, for importers and exporters.
On the imports side, there would be no impact on levy of Basic Customs duty, Education Cess, Anti-dumping duty, Safeguard duty and the like. However, the Additional duties of Customs, which are in common parlance referred to as Countervailing Duty (CVD) and Special Additional duty of Customs (SAD), would be replaced with the levy of Integrated Goods and Services Tax(IGST), barring a few exceptions
On the exports side, export would be treated as zero-rated supply. Under zero-rated supply IGST paid on export goods or the input tax credit proportionate to the goods and services consumed in goods exported under bond /LUT would be refunded.
A brief summary of the changes that would impact importers and exporters upon roll out of GST are encapsulated here: link