I have been filing married jointly. In 2015 I worked overseas, and was present for at least 330 days in a foreign country. However; my spouse worked in the States for 4 months. Should I consider filing, Married-Separate, or Single and use the form 2555?

Details:

- I was salaried without deductions (foreign income).
- My spouse has W-2's, and a 1099
- Each of us made under $12,000.
- No dependents.
- We haven't filed our 2014 returns (and we will owe taxes).


Thank you.