Yes, coupon codes and promo codes typically have an expiration date. This is a set date after which the code will no longer be valid for use. The expiration date is usually set by the company issuing the code. It's always a good idea to check the terms and conditions of a coupon or promo code to see when it expires. However, some codes may not have a set expiration date and could be valid until the company decides to end the promotion.