My client and her husband usually file a joint tax Federal and Hawaii State tax return. Both are now retired. They have a rental property in a Single-member LLC (Michigan) wholly owned by a Multi-member LLC (Hawaii) of which they are both members. Last year the husband moved to Michigan to look after his elderly father and became a Michigan resident.  His wife remains in Hawaii as a Hawaii resident. Can they still file a joint Federal Tax return? What would be their filing status?