My spouse and our child who is a US citizen lived overseas together the whole year in 2023, but I lived in the US for work. We are filing jointly.
Is our child still counted as a dependent? Do I answer "Yes" to "Did <the child> live with you for the whole year?"
Yes, answer that she lived with you all year. The person doesn't have to live with you in order to qualify as your dependent on taxes. However, the person must be a relative who meets one of the following relationship test requirements: Your child, grandchild, or great-grandchild. So, yes!
How about "To meet this test, your child must have lived with you for more than half the year. " per Publication 501 (2023), Dependents, Standard Deduction, and Filing Information | Internal Revenue Service (irs.gov)?
Is this satisfied because one of us lived with our child more than six months?