File married/joint separate taxes

[Abby2018]

If you file taxes married separately, which tax form should the non-US citizen use?

[Enub4]

Maybe this will help:

https://www.irs.gov/individuals/international-taxpayers/determining-alien-tax-status

[newacct]

If you file taxes married separately, which tax form should the non-US citizen use?

If he/she is a resident alien (i.e. passes the Substantial Presence Test or the Green Card Test), he/she would use the same form you use -- 1040. (Though if this is the first year he/she is resident, he/she will be dual status, resident only from when he/she entered the US.) If he/she is a nonresident alien, he/she would use 1040NR or 1040NR-EZ. Note that if his/her income is below a certain threshold, he/she is not required to file a tax return.