@cathionenterprises
You haven’t given enough details to understand your situation. You are replying to an old discussion and I don’t want to assume that the facts are the same.
In general, if a person is unmarried, or “considered unmarried“, they file a tax return with single status. They may file head of household if they provide care in their home for a qualifying person, and if they pay more than half the costs of keeping up that home.
For head of household purposes, a married person can be considered unmarried if they have been separated from their spouse and living apart from their spouse for all of the last six months of the tax year. A “qualifying person” to claim head of household status is usually a child dependent who lives in the taxpayer‘s home for more than half the nights of the year, but it can sometimes include siblings or other relatives. We would need more details about your situation to give you a specific answer.
