We lived together in the same household for10 months but get a divorce and I'm head of house can I still file with her.

[DDollar]

If you were divorced as of December 31, you cannot file jointly.  You have to file either Single, or if you qualify, as head of household.  To file as head of household, you must: Pay for more than half of the household expenses. Be considered unmarried for the tax year, and. You must have a qualifying child or dependent.  For more information, see:

https://turbotax.intuit.com/tax-tips/family/guide-to-filing-taxes-as-head-of-household/L4Nx6DYu9