The issue is: we were married on May 17th, and we didn't live together until I lived with him in the UK after my employment ended. Technically, from May-Oct we were sharing our money, although his employment and money were in his name in his account in the UK and mine was in my account in my name in the US.
If we file "jointly" we'd be paying taxes on his money and mine despite his never being in the US as a resident. I don't see the point in including him if the standard deduction for singles or mfs is the same.
Go to the IRS website and download the i1040 document (1040 instructions)- it should clear up most questions for you:
http://apps.irs.gov/app/picklist/list/formsInstructions.html?value=1040&criteria=formNumberIf you were married at the end of 2012 you have to file as such, regardless of your living situation throughout the year (as stated on the 1040 Instructions)
Your DH has never been employed in the US, which makes him a NonResident Alien.
This means you must file as Married Filing Separately
UNLESS you get a SSN / ITIN and file all his income & assets (as stated on the 1040 Instructions) and you will need to continue file MFJ every year after this one.
You can not claim an exemption for your spouse if they are a NR Alien (as stated on the 1040 Instructions)
You get way less deductions MFS than both Single & MFJ, which sucks, but unfortunately a reality of being married to an NR alien.
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