If you're in a community property state, you're supposed to split your incomes. Rarely does a properly done MFS return come out better than filing a joint return. Also, your spouse cannot file as HOH without a qualifying dependent (in most cases, a child). Unless he has a qualifying dependent, you may want to consider filing a joint return (unless you're legally separated by the laws in your state; in which you would "split" the income up to the date of separation). Otherwise you both must file a separate return using the MFS filing status.
