What are the differences between the Mac and Windows version of Turbotax

Hi,

 

The download versions only seem to come for one operating system - Mac or Windows.  Couple of questions:

 

 - If I buy the Mac version download and later realize that I'd like to run on a Windows machine is that possible?  Or will I just need to buy the disc?

 

 - What are the differences between the Mac and Windows versions?  Primarily I'm interested in Home and Business

 

Thanks