Exports and supplies to SEZ units and SEZ developers are zero-rated in GST. Zero-rating effectively means that no tax is payable on exports but the exporter/supplier is entitled to the input tax credit on inputs/input services used in relation to exports. The exporters have two options for zero rating, which are as follows:
(1) To pay integrated tax on supplies meant to be exported and get refund of tax so paid after the supply is exported.
(2) To make export supplies under a bond or letter of undertaking and claim refund of taxes suffered on inputs and input services in relation to such exports.