TurboTax Business, when combined with a companion state-level business income tax form component for TurboTax costs somewhere around $120 (Target, Costco with coupon) plus state $60 (must from Intuit) - lowest total online $180. So, the answer is NO MAC support for TurboTax Business. Perhaps it is simply their assessment of the size of the market - MAC users. They've never chosen to spend the funds on rewriting the product, nor have they made the product available online as an alternative. When Apple introduced Lion and eliminated the direct function calls in to the O/S, the TurboTax BUSINESS product ceased to be compatible. Hey, Look guys/gals co-MAC users - I'm just a volunteer here so if you don't like the factual answer, your best choice is call Intuit or write and complain.