A transaction is conducted at a merchant location using redeemed loyalty points maintained in a loyalty point account for a customer. The transactions are conducted using a mobile device at a POS terminal. In response to receiving a customer ID from the mobile device, a loyalty server provides the monetary value of loyalty points. The customer may use the mobile device to redeem those points and have the value transferred into a financial account. A payment processing system connected to the POS terminal completes the transaction using the financial account.