Your siblings cannot be claimed on more than one tax return. If your parent who works is filing a tax return and claiming the children (including you, actually) then they cannot be claimed on anyone else's return. If you are being claimed as a dependent on your parent's return, a dependent cannot have a dependent of their own.
It sounds like you are in a difficult situation and are doing all you can to make it better, which is really admirable.
Only the person who pays for more than half of the expenses--including rent, utilities, food, clothing, etc. etc.can claim the kids and file as Head of Household. If you add it all up----who is paying even just a little bit more---you or your parent?
**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.**
