What kind of return do you need to do? A 1041 Trust/Estate return? Or a 1120 or 1065 Business return? For all those you need Turbo Tax Business.
Turbo Tax Business is not available to do online or on a Mac. You can buy the Window's version here. And you can have both TT Business and TT Home & Business (or any personal version) installed on your computer at the same time.
https://turbotax.intuit.com/small-business-taxes
