If your GF claims the child --- who she is not related to -- all she "gets" is a $500 credit for other dependents. She cannot file as Head of Household or get earned income credit or the child tax credit for claiming your child. You, as the parent, can get all of the child-related credits and if you pay at least half the household costs you can also file as HOH.
**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.**
