@yoshimikamada
you can print your returns before you file them to double check. Your IRS form 1040 should have “head of household“ checked. The IRS Form does not make a distinction between people who are married, living separately, and filing house of household versus people who are single and filing head of household; form 1040 just says “head of household“.
As long as you told TurboTax you were married, your California form should correctly say that you are married but living separately, because the California form does include that extra information that the IRS form does not include.
