It depends on what type of government forms you are referring to. For your income taxes, if he does not qualify as a dependent you cannot claim him. However if, for instance, you are attempting to get a tax payment arrangement you may need to count his income/expenses in your household calculation in many instances. You need to be much more specific.
This is not legal advice nor intended to create an attorney-client relationship. The information provided here is informational in nature only. This attorney may not be licensed in the jurisdiction which you have a question about so the answer could be only general in nature.
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It's not clear what "government forms" you are filling out. Whether you may claim your father as a "dependent" on your federal income tax return and whether you must report him as part of your household on other (non-tax related) government forms, may be different.
However, if you are wondering whether you may claim your father as a dependent on your federal income tax return, the answer is "probably not."
You may claim your father as a dependent on your 2012 federal income tax return only if his gross income for 2012 is less than $3,800 AND you provided over one-half of your father's (financial) support during 2012.
This response is for general informational purposes only. It does not create or imply an attorney-client relationship between the reader or any other person and Lapekas Law, P.A.. This response may not be relied upon to avoid civil penalties that may be imposed by the IRS regarding any matter discussed herein.