"You would file married filing seperately, as you were married at least 6 months of last year, but were seperated and then next year you would finally file single."
Your filing status is used in determining whether you must file a return, your standard deduction, and the correct tax. It may also be used in determining whether you can claim certain other deductions and credits. The filing status you can choose depends partly on your marital status on the last day of your tax year.
Marital status. If you are unmarried, your filing status is single or, if you meet certain requirements, head of household or qualifying widow(er). If you are married, your filing status is either married filing a joint return or married filing a separate return. For information about the single and qualifying widow(er) filing statuses, see Publication 501.
For federal tax purposes, a marriage means only a legal union between a man and a woman as husband and wife.
Unmarried persons. You are unmarried for the whole year
if either of the following applies.
You have obtained a final decree of divorce or separate maintenance by the last day of your tax year. You must follow your state law to determine if you are divorced or legally separated.
Exception. If you and your spouse obtain a divorce in one year for the sole purpose of filing tax returns as unmarried individuals, and at the time of divorce you intend to remarry each other and do so in the next tax year, you and your spouse must file as married individuals.
You have obtained a decree of annulment, which holds that no valid marriage ever existed. You must file amended returns (Form 1040X, Amended U.S. Individual Income Tax Return) for all tax years affected by the annulment that are not closed by the statute of limitations. The statute of limitations generally does not end until 3 years after the due date of your original return. On the amended return you will change your filing status to single, or if you meet certain requirements, head of household.