The TurboTax program is incorrectly not allowing people to file as Head of Household because they are not claiming a dependent. The IRS tool proves this issue.

Using this tool from the IRS, you are eligible to file as head of household without claiming a dependent on your return. Can you fix TurboTax to allow filing for Head of Household without claiming a dependent?
https://apps.irs.gov/app/IPAR/investigate/IPAR_1/en-US/Attribute~Filing_Status~global~global/qs%24s2...