A system and method for upgrading existing credit cards with additional lines of credit is disclosed. Credit information associated with customers holding credit cards issued by a credit card issuer are analyzed to determine a level of risk associated with each customer. One or more extra line of credit may be established for selected customers based on the determined level of risk associated with each customer. Each extra credit line may be exclusively associated with a selected set of vendors that have a partnership agreement with the credit card issuer. The credit card issuer may allow customers to select vendors to be associated with the extra credit line or may automatically choose vendors for selected customers. Customers with established extra credit lines may purchase goods and/or service directly from vendor sites or at the credit card issuer's web sites. Purchases at selected vendor sites may be automatically applied to a customer's newly established extra credit line. Additionally, a customer may choose to apply purchases to their extra credit lines or their primary line of credit.