As similar to other PC-based programs, TurboTax is also associated with many technical issues as being complained over the years. So if you're finding TurboTax not working on Mac , it's not a new one to look over. What you do is close the program completely and re-launch it; if the issue persists, check the TurboTax installed on Mac is the updated one. If you fail to get at it somehow, let us know by contacting our professional.