The BUSINESS tab is located in TurboTax Home & Business CD/Download.

If you are using TurboTax Self-Employed Online, to review or edit entries related "not at risk" for self-employed business(es) reported on Schedule C, please review the following instructions:

1. If you are using TurboTax Online, sign in to the appropriate TurboTax account and select Take me to my return.
2. In the upper right corner, type "schedule c" in the Search box and then select the "Jump to" link in the search results.
3. On the Here's XXX's info screen, under Uncommon situations, select Edit on Carryovers, limitations, at risk information, etc. 
4. On the Do you have any of these other business situations? screen, ensure you do not have the following box checked: I have money invested in this business that I'm not at risk of losing; that is, certain cash, property, or borrowed amounts that are protected from loss. See attached screenshot.