"...
the business product will NOT let me do both of those returns..."
That is correct; the Business product (TurboTax Business) is only capable of preparing income tax returns for entities, such as estates or trusts; it is not capable of preparing individual income tax returns.
The personal income tax preparation products, on the other hand, are not capable of preparing income tax returns for entities, so you will need to buy two products (personal and business).
Also note that if you need to enter information from a K-1 and you plan to do your personal income tax return using an Online TurboTax product, you will need to use at least TurboTax Premier. You can, however, use any desktop (CD/Download) version of TurboTax for that purpose.
