If she is a nonresident, you both will need to sign an election to file married filing jointly declaring your worldwide income. Otherwise you will need to file a married filing separately 1040 and she will need to file a nonresident 1040NR as married filing separately.
If, at the end of your tax year, you are married and
one spouse is a U.S. citizen or a resident alien and the other spouse is a
nonresident alien, you can choose to treat the nonresident spouse as a U.S.
resident.
To make this choice:
Attach a statement, signed by both spouses, to your joint return
for the first tax year for which the choice applies. It should contain the
following information:
• A
declaration that one spouse was a nonresident alien and the other spouse a U.S.
citizen or resident alien on the last day of your tax year, and that you choose
to be treated as U.S. residents for the entire tax year.
• The name, address,
and identification number of each spouse.
You will need to
attach this statement to your printed TurboTax return and mail to the tax
authorities. You cannot e-file your return.
Please see page 8 in Publication 519 for more information.
Publication 519
You can enter the 1098-T into TurboTax, enter 1098t tuition and fees in the search box at the top of the screen and click Go to 1098-T
Under child and dependent care you can enter that your spouse was a student in 2018.
