When a company exports goods under the IGST payment route and includes freight and insurance components in the total invoice value, it can adopt a composite GST rate for the entire invoice by treating freight and insurance as part of the value of the goods, provided these are incidental to the supply and included in the price charged. In such cases, the same HSN code and GST rate applicable to the goods should be applied uniformly to the entire invoice value, including freight and insurance, as per the valuation rules under Section 15 of the CGST Act. When invoiced this way, the freight and insurance are treated as part of the principal supply (goods) under the concept of a composite supply. Consequently, the company is eligible to claim a refund of the IGST paid on the full invoice value, including the freight and insurance components, as part of the export of goods with payment of tax under Rule 96 of the CGST Rules, subject to fulfillment of refund conditions such as proper filing of shipping bill, EGM, and GSTR-1. There is no restriction under GST law preventing the inclusion of freight and insurance in the export invoice for refund purposes.