Ezytaxback makes a tax refund lodgment easier than ever before. To help get you started we have created an easy to use tax refund tool. Our Australian personal online tax refund calculator is free. It provides you with an instant estimate of your tax refund! No sign-up or credit card required. All you need to do is fill out the information and you instantly get your estimate. This tool gives you a quick and simple snapshot of your potential return.