My grand daughter is living and working in Australia and married to an Austrailian.

The tax year in Australia runs from June 2018 to June 2019. How do you do the Foreign Tax Credit and how do you report her US income on the US tax return when the equivalent to our W-2 in Australia reflects the amounts from June 2018 - June 2019?

Also would she file married filing separate in the US? Her husband doesn't have a Social Security number. Does he have to get a special ID#?

Thank you,

Pam