Abstract: Systems and methods for providing embedded payment functionality, such as a virtual shopping cart. In an embodiment, configuration data is received. The configuration data may comprise product data and up-sell data. A uniform resource locator (URL) that is associated with the configuration data is generated, and Hypertext Markup Language (HTML) code comprising the URL is generated. The HTML code is capable of being inserted or embedded within a HTML document. In addition, a plurality of user interfaces may be dynamically generated based on the configuration data. The plurality of user interfaces comprise a payment interface comprising inputs for payment information, and one or more up-sell interfaces comprising inputs for selecting one or more up-sell offers.