I should have filed as head of household but I didn't. What can I do?

[DoninGA]

If you were eligible to file as Head of Household the TurboTax program would have given you that filing status when you were completing the My Info section of the program.

See this TurboTax support FAQ for being eligible for Head of Household - https://ttlc.intuit.com/community/family/help/do-i-qualify-for-head-of-household/00/25539

Based on the requirements, are you eligible?

[xmasbaby0]

If you e-filed already you have to wait to amend after it has been fully processed.  You cannot change it now.

But ..... are you HOH?   If you entered your marital status and claimed a qualifying dependent it would have offered HOH to you.

Am I Head of Household?

https://ttlc.intuit.com/questions/1894553-do-i-qualify-for-head-of-household

https://ttlc.intuit.com/questions/2900097-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.