Abstract: Systems and methods for handling multiple aspects of the acquisition of products and/or services, such as vehicles, are provided in a unified and streamlined fashion. Through an integrated credit application and tax refund estimation service application/systems, credit application-related data and non-overlapping tax-related data is captured. A tax refund is estimated based upon the tax-related data and at least a portion of the credit application-related data. Upon a determination to utilize at least a portion of the estimated tax refund as at least a portion of a down payment on a loan, at least a portion of the estimated tax refund is incorporated into a deal structure of the loan, and a credit application including the deal structure and at least the credit application-related data is submitted for a decision.