You claim him as a dependent under the personal information section. He would be a Qualifying Relative dependent if he had no income, lived with you all year, you provided more than 1/2 of his support, and he is a citizen, or resident of the US. He does not have to be related to you to be a Qualifying Relative, that's just a tax term. He also cannot be the Qualifying child dependent of anyone else, meaning, for example, his parents. He would have to be under the age of 19, or under the age of 24 and a full-time student for at lease 6 months in order to be their Qualifying child though.
If he qualifies as your dependent, you can also claim his medical expenses, including health insurance.
If you happen to live in one of the 3 states that recognize common law marriage of same sex couples, you could file as married joint. You should carefully read the state common law marriage requirements, though, and understand that you may later be required to file for divorce if you decide to split up. Currently, those localities are RI, Iowa, and DC.
Ok some states may consider those living together as married under common law marriage. The Fed follows the states laws for marriage.
Currently, Iowa, Rhode Island and the District of Columbia recognize common law same-sex marriages <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-drop/rr-13-17.pdf">https://www.irs.gov/pub/irs-drop/rr-13-17.pdf</a>
You claim him as a dependent under the personal information section. He would be a Qualifying Relative dependent if he had no income, lived with you all year, you provided more than 1/2 of his support, and he is a citizen, or resident of the US. He does not have to be related to you to be a Qualifying Relative, that's just a tax term. He also cannot be the Qualifying child dependent of anyone else, meaning, for example, his parents. He would have to be under the age of 19, or under the age of 24 and a full-time student for at lease 6 months in order to be their Qualifying child though.
If he qualifies as your dependent, you can also claim his medical expenses, including health insurance.
If you happen to live in one of the 3 states that recognize common law marriage of same sex couples, you could file as married joint. You should carefully read the state common law marriage requirements, though, and understand that you may later be required to file for divorce if you decide to split up. Currently, those localities are RI, Iowa, and DC.