A method and system for facilitating online payments are disclosed. According to one aspect of the present invention, a payment agreement is established at a payment service provider that defines terms of a payment relationship between a merchant and a user. The establishing of the payment agreement includes linking the payment agreement with a payment account of the merchant or user stored at the payment service provider. After establishing the payment agreement, a payment request associated with a transaction is received, whereby the payment request includes a unique identifier to identify the payment agreement stored at the payment service provider. Based on a verification that the payment request complies with terms of the payment agreement, the payment request is processed.