Exchange rate determination for customs: updated import and export conversion rates effective 18 August 2023. The Central Board of Indirect Taxes and Customs, exercising powers under section 14 of the Customs Act, 1962, prescribes specified conversion rates of listed foreign currencies into Indian rupees for import and export goods effective 18 August 2023, superseding the earlier Notification No. 57/2023; rates are presented in Schedule I (per unit) and Schedule II (per 100 units), with a recorded substitution for the Turkish Lira and later supersession by a further notification.