You can use whatever mailing address you would like even if it is a P.O. Box. This will not cause any issues. The most important thing is using an address where you would like to receive mail if the IRS needs to contact you. Just make sure the state of
residency is correct in the Personal Info tab
section.
So I won't have to worry about being audit for claiming head of household with p.o box as my address?
No. The address you enter is so the IRS can contact you if they need to. Many people do not receive personal mail at their home addresses.
I dont think TurboTaxShaB caught the HOH part of the question. I would think this would be a red flag for the IRS. I just read on another Q&A that you shouldn't use a Po Box as your address unless the post office does not delivermail to your physical address.