Can a person claim head of household and be single? I am supporting my 21 year old daughter.

Am I Head of Household?

https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-filing-status/qualify-head-household-2021/L0NxUtVc2_US_en_US?uid=m5x19jkx

• What is a "qualifying person" for Head of Household?

If you qualify as Head of Household, when you enter your marital status (single or married filing separately) into MyInfo, and then enter your qualifying dependent, TurboTax will offer HOH as your filing status.

To file as Head of Household, you have to:

• Pay for more than half of the expenses for a qualifying household
• Be considered unmarried on the last day of the tax year
• Have a qualifying child or dependent

What is a qualifying child?

The eligibility of a qualifying child or dependent extends beyond just your own son or daughter. To be considered a qualifying child, the child has to meet the criteria in each of the following categories:

• The child is your biological or adopted child, stepchild, or foster child. The qualifying child also may be a sibling, step sibling, or half sibling. A qualifying child can also be a descendant of one of these relatives (child, grandchild, great grandchild, etc.).
• The child lived within your home for more than six months during the tax year.
• The child needs to be younger than you.
• As of the end of the tax year, the child is under 19 if he is not a student, or under 24 if he is a full-time college student.
• The child did not pay for more than half of their living expenses during the tax year.