Today budgeting occurs in all types of organizations, from authorities and municipalities, to private companies and non-profit associations. Depending on whether the organization is large or small it can look very different. In large organizations the budget can be such a comprehensive document that it is difficult to keep track of it. Furthermore, in large organizations, the budget work starts very early. Thus, an effective budget process could reduce resources, time and ultimately costs. This master’s thesis report describes a budget application built with the Business Intelligence software QlikView. With the application a budgeter can load desired budget data and through a QlikView Extension Object edit the loaded data and finally follow up the work of different budgets. The Extension Object has been implemented using JavaScript and HTML to create a GUI. The edited data is sent to a back-end interface built with one web server and one database server. To evaluate the usability of the Extension Object’s GUI and determine how the budget application works and to get feedback on the Extension Object and its functionality, a user study was performed. The result of the user study shows that the application simplifies budget processes and has great potential to help budgeters and controllers to increase their effectiveness.