There are provided systems and methods for a browser tool and application for providing an exact amount transaction funding source or gift card. A digital gift card may be generated for an exact amount by detecting a checkout total is finalized on a merchant website having a checkout process. This may be done using a computing script that parses a DOM tree for the website and identifies webpage elements to monitor. By monitoring the webpage elements, a checkout total may be detected. This may occur by detecting when input and elements are finalized and present within one or more webpage fields, such as by monitoring HTML or XML code snippets A gift card network may be used to offer an exact amount gift card to a user to be used for full payment of the transaction.