Time of supply in case of supply of vouchers for goods :
In case of supply of vouchers by a supplier, the time of supply shall be – (a) the date of issue of voucher, if the supply is identifiable at that point; or (b) the date of redemption of voucher, in all other cases – section 12(4) of CGST Act.
“Voucher” means an instrument where there is an obligation to accept it as consideration or part consideration for a supply of goods or services or both and where the goods or services or both to be supplied or the identities of their potential suppliers are either indicated on the instrument itself or in related documentation, including the terms and conditions of use of such instrument – section 2(118) of CGST Act.