If you want to upgrade to TurboTax Online Self-Employed,
continue your return until you see a “Upgrade” link appear on the bottom of the
left side menu. Then you can click on it to get the option to upgrade to Self-Employed.
If your business is incorporated, then the online
service is of no use to you. It is only for T1 personal returns. To do a T2
business return, you can use TurboTax Business Incorporated (for Windows OS Only).
You can buy it from this link: https://turbotax.intuit.ca/business-tax-software/business-incorporated.jsp