Can we file a joint tax form?

[CarolynM]

Couples who were legally married on December 31, 2018 can file a joint tax return.

If you are recognized domestic partnership, you may file jointly in your state. 

If one of the spouses was not a US resident, you can file jointly, but you will be taxed on their world wide income.

For more information on filing statuses, follow this link: What Is My Filing Status