Customer support should provide the state download you purchased for either your Windows PC or your Mac at no extra charge. The downloads are specific to Windows or Mac.
However, your plan to bounce back and forth between the two computers while working on the same return using desktop software is a matter for concern. The tax return is only stored on your hard drive---you cannot get to it by logging on to an online account. So every time you want to switch from one computer to the other you will have to remember to have the file saved to a flash drive---- a situation prone to messing up.....
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
