If you want to file a tax return for income that your child has in their name, you can do that. You will need to make a new account in Turbotax Online, because each online account can only be used for one person's tax return. It must have a unique user name and password, but it can be linked to the same e-mail address as your regular account. If filing by mail, you sign your own name and write "by [your name] as guardian of minor child." If e-filing, the program should do this for you. If e-filing, and the child has never filed a return before, you will pick a 5-digit e-filing PIN that can be used in the future for the child's next tax return.
If you want to list your child on your tax return as a dependent, go ahead and add them and answer the interview questions carefully and correctly. If it seems like the child does not qualify as a dependent, post more details and we can help you understand the rules as to why they don't qualify, or if they do qualify, we can help you answer the questions correctly.
