My question involves a 2009 tax return in the state of WI. My husband and I lived together from the beginning of 2009 until he moved out in march of 09. He payed my rent for april may and june, in late june, myself and my daughter moved in with my mother temporarily, from late june until october of 09. October of 09 through december of 09, I had my own apt, with my daughter. My ex served me divorce papers, our divorce was not finalized in 09. When I filed my taxes for 09, my tax preparer filed me as head of household. Was this correct since we were still legally married? Can this be amended if it is wrong?