Do you want to upgrade to the Home&Business desktop program to fill out schedule C for self employment? Or do you need to file a separate Business return like a 1120, 1120-S, 1065, 1041?
In the Desktop program you can upgrade to Home & Business. In the Online program it is now Premium.
If you need to buy the stand alone do it yourself Business Download program for Windows here (it is not available to do online or for Mac).
https://turbotax.intuit.com/small-business-taxes/cd-download
