A promotional voucher is a document or code that entitles the holder to a discount, free item, or other special offer when used for a specific product or service. These vouchers are often distributed by businesses as part of a marketing campaign to attract new customers or reward loyal ones. They can be redeemed online or in-store, and typically have an expiration date. Promotional vouchers are a popular and effective way for companies to incentivize purchases and increase brand awareness.