Well, it's been like that for us since 2020 when the new W4's came out and they FINALLY got the program updated with the W4 tab. I tried and tried to explain to them that there is no place to view a HOH tax table - only single and married - UNLESS you check the box for additional job, then they pop up.  But if this is your only job and you don't check the box, there is no withholding taken out.  And if you go back and look at the W4 tab after you exit out of employee screen, you will notice the HOH box is grayed out, even if there is a check mark in it.  

Has your program taken out the correct federal withholding for your HOH employees?  I would be curious to know.