@tmbz --
Your situation does not require filing your federal return separately, so that can still be a joint return.
Florida has no income tax so nothing to file there.
If your husband is in Florida temporarily for work purposes, while keeping MD as his main or primary home, then for tax purposes he remains a resident of MD and all his income remains taxable by MD, including his earnings from Florida.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
