Loaded the first time for the Mac, and the program has done after the installation immediately what it was, namely calculate overpaid taxes. The navigation and the overall structure are easy to understand and easy to operate accordingly. One will immediately identify possible forgotten registrations. Good is also the video support in case of doubt. On the whole, the program is worth every penny. Whether the calculated by the program as well as repayment takes place by the tax office, I can not say conclusively, but then it'll catch up here. Greeting Nicole