Can a non-resident spouse of a non-resident alien file a joint tax return?
I am doing the taxes for a nonresident alien (the taxpayer.) The taxpayer's spouse does not work and is also a nonresident alien. The taxpayer works in the US and has a TIN. They are filing out form W7 for the spouse. The spouse does not have a TIN number yet. Can they file joint on a paper 1040 and mark "applied" for the spouses TIN and attach a copy of the W7? If they can, what IRS publication can I show for evidence that this is legal? I would like to find a way to get this to work because it is more advantageous for the married couple to fill joint. They have been extended and the tax return will not be due until Oct.