Financial world is one industry where excel still plays the most important role no matter how advanced the software world has become. The ever changing need of the industry with quick implementation and trials is something which can be only quickly achieved using excel files. Derivatives strategy back-testing is one such space where we have helped multiple traders from across the globe to implement their strategies. With easy to use front end listing for variables, the trader can easily update the values, link the tool to historical prices and see the strategy profit/loss over the years. We also allow the user to easily update the output table and decide the fields he wants to be displayed in output. There are also modules for running stress testing on these strategies and easily figure out the profit/loss for different range of input values. Past clients have appreciated our efforts and appreciated the effectiveness of our solutions.