I'm legally still married, we haven't lived together for a year

[meemee61925]

do i still have to put his info

[ddaven12 · Accepted solution]

If you are married at the end of the year, you have to file either Married Filing Jointly or Married Filing Single. However, in certain cases, and if you have dependents, you may qualify for Head of Household. 

Here is a TurboTax FAQ that explains when a married person can file as Head of Household:

https://ttlc.intuit.com/replies/4206137

Note: One of the requirements is that the spouse didn't live in your home the last six months of the year. The absence cannot be temporary!