If you are still legally married you cannot file as Single. You can file as Married Filing Joint (even if you are not living together but both must agree), Married Filing Separate, or if you qualify Head of Household.
To qualify for the Head of Household filing status while married, you must:
- File your taxes separately from your spouse
- Pay more than half of the household expenses
- Not have lived with your spouse for the last 6 months of the year
- Provide the principle home of a qualifying dependent
- Claim an exemption for your dependent
If you meet all of these requirements, you may file as Head of Household while married.
