No, you do not have to buy the software twice. The desktop software can be used to prepare and e-file up to five federal returns; if you have more than five, the others can be filed by mail. However,----what are the "small businesses?" You need TurboTax Business if you have a C-corps, S-corps, multi-member partnership or estate return to prepare. If you are a sole proprietor, you may only need online Premium or any version of the desktop software in order to prepare a Schedule C for your business expenses.
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