When do my gift and promo vouchers expire? Premium Plus July 23, 2020 09:12 Updated The expiry date is printed on every gift or promo voucher. After this date the voucher is no longer valid. Related articles How can I exchange Smiles for gift vouchers? How many Smiles do I need for a gift voucher? I have multiple vouchers. How can I tell if a voucher has already been used? I get an error message when I scan my voucher. What now? Can I merge the Smiles from different cards? Comments 0 comments Please sign in to leave a comment.