I really only like Apples that I can eat, but I have this thought.

Install a Mac pdf printer and select it as the printer when you Print the return. I can neither confirm nor deny that the proper tax form fonts can be supported.

In windows I have a choice of Lacerte PDF, Adobe PDF, .... I just tried Adobe pdf and it failed, but Microsoft pdf worked.  

Report back if you find one that works and that could help the next Mac user.