Section 16. Zero rated supply (3) A registered person making zero rated supply shall be eligible to claim refund under either of the following options, namely: - (a) he may supply goods or services or both under bond or Letter of Undertaking, subject to such conditions, safeguards and procedure as may be prescribed, without payment of integrated tax and claim refund of unutilised input tax credit; or (b) he may supply goods or services or both, subject to such conditions, safeguards and procedure as may be prescribed, on payment of integrated tax and claim refund of such tax paid on goods or services or both supplied, in accordance with the provisions of section 54 of the Central Goods and Services Tax Act or the rules made thereunder. Substituted by the Finance Act, 2021 with effect from 01.10.2023 (3) A registered person making zero rated supply shall be eligible to claim refund of unutilized input tax credit on supply of goods or services or both, without payment of integrated tax, under bond or Letter of Undertaking, in accordance with the provisions of section 54 of the Central Goods and Services Tax Act or the rules made thereunder; subject to such conditions, safeguards and procedure as may be prescribed: Provided that the registered person making zero rated supply of goods shall, in case of non-realisation of sale proceeds, be liable to deposit the refund so received under this subsection along with the applicable interest under section 50 of the Central Goods and Services Tax Act within thirty days after the expiry of the time limit prescribed under the Foreign Exchange Management Act, 1999 (42 of 1999) for receipt of foreign exchange remittances, in such manner as may be prescribed.