HOH

No

Seriously, you can't figure that one out on your own?  

If I remember correctly,  you took this business over for a relative that passed and you kind of got dropped in over your head, but this is very basic Tax 101.

You're doing your clients a disservice to be in the dark over basics like this.

Do you have ANY reference books on your desk to look up these kinds of things? 

or even Googling   Who Qualifies For Head of Household

Sometimes statuses can be a bit tricky but you really need to have some reference materials on hand or even google is a wonderful thing. In order to learn, you must look up these things for yourself instead of the easy answer. 

Or ask here for the reference and someone will point you in the right direction. I try to research myself but sometimes I need a little direction. 

Here is a resource page to bookmark. It is Wizards. The IRS calls them Interactive Tax Assistant. You will see topics such as "What is my filing status?" and "Who may I claim as a dependent?"

By the way, "you" and the client's info, are the I in this process.

https://www.irs.gov/help/ita