Can I transfer tax returns completed under my email to other email logins?

Unfortunately, you can’t transfer returns or other information from one TurboTax Online account to another.

You can, however, download and/or print the PDF archive copies of any return that has already been paid for (or is free). That way your children will at least have their tax information to look at.

This FAQ tells you how to save/print a copy of your tax return in TurboTax Online: https://turbotax.community.intuit.ca/community/tax-return-print-save/help/in-the-online-edition-of-turbotax-how-do-i-print-a-copy-of-my-tax-return/00/873651