The only time you are REQUIRED to file as MFS is if you have elected to end your tax year on the day before filing bankruptcy AND your spouse is not joining you in that election.
For Example: You file a joint bankruptcy petition on 5/15/05. You elect to end your tax year on 5/14 so that any tax liability for the short-period ended 5/14 will be part of the bankruptcy estate. You wife elects NOT to join you. Thus you will be required to file a MFS return by 9/15 covering the period from 1/1/05-5/14/05. You would also file a MFS return for the period 5/15/05-12/31/05. Your wife would file a calendar year MFS return for 2005. If your wife joins you in the election to end the tax year on 5/14/05, you may file a joint return for both short periods.
Also, if applicable you may still be subject to AMT. You need to calculate Form 6251 to determine if you have AMT.
The estate in preparing its return (Form 1041) may take one personal exemption and may either itemize or use the MFS standard deduction. In figuring the "estates" tax the trustee must always use the MFS tax tables. The bankruptcy estate figures its tax like an individual. Thus, personal exemptions and itemized deductions may be phased-out under the MFS rules.
Edited by chris21 on May 20 2005 at 9:13 PM