A coupon delivery and redemption system provides, (i) for wireless delivery of a product coupon file with the coupons of the product merchants to customers' wireless mobile devices from a coupon system anywhere, at home or in store while shopping, (ii) for customer to search and select for display a product coupon from the coupon file, (iii) for coupon redemptions by retail merchants by scanning the coupon bar code from the wireless device screen, (iv) for validation of the coupon for one time use by interfacing of the retail merchant system with the coupon system, (iv) for the product merchant to receive coupon redemption data from the coupon system, and (v) for the retail merchant to receive aggregate funds for redeemed coupons via the coupon system for an efficient and convenient paperless coupon system.