Loyalty programs can be operated within a payment processing system having multiple vendors, thereby providing access to detailed transaction data and with the flexibility for customization of the loyalty programs themselves, by establishing a communication for the transfer of data via a customer-facing channel. When the payment processing system processes a transaction between a merchant and an account holder, in addition to obtaining payment for the merchant from the account via an acquirer and an issuer, respectively, a transaction handler tabulates and stores, different types of loyalty currencies in a loyalty reward account associated with the account holder if the account holder is enrolled in a loyalty program and criteria for applying the loyalty program are satisfied. The account holder is provided access to the loyalty account via the customer-facing channel.