Yes, the Online Edition is the same as the Online version that we have on our website. Both the Online versions and the CD/Download version can create the same types of returns, however there are some differences. This FAQ has more info: https://turbotax.community.intuit.ca/questions/1658842

If I buy the online version bundle form Costco, can I spread the number of returns to different accounts? Or do they have to be all done under 1 account?

The desktop version seems to allow you to install it on 3 computers (but you have to uninstall it first before you can install it on another computer???)