Systems and methods are provided for calculating a savings amount for loan refinancing. According to one implementation, a method includes displaying a graphic user interface comprising a widget at a client device and receiving input data from a user regarding a loan. In some embodiments, the input data may include the user's credit level and the current monthly payment, APR, and payoff amount associated with the user's current loan. The method further includes determining a saving amount based on a comparison of the input data with historical savings data accessible to the widget, and displaying the savings amount in the graphic user interface.