Not legally married? You have not mentioned if all of you are living together as a family --- or if you live apart---and that really matters.
If all of you are living together as a family then the child can be claimed on only ONE of your tax returns. One of you can go to My Info and enter the child as a dependent, and the other parent files as Single and does not enter anything at all about the child. Usually the parent with the higher income should be the one to claim the child and file as Head of Household.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
