Following the 2021 amendment to Section 16 of the IGST Act, the option to export on payment of IGST and claim a refund is no longer an automatic right for every exporter. It is now restricted to notified classes of persons or goods/services. Those not covered under these notifications must use the Bond or Letter of Undertaking (LUT) route, allowing them to export without tax and claim a refund of their accumulated input tax credit instead. Always refer to the latest government notifications to verify if your specific business category remains eligible for the "payment of IGST" route.