The age when a United States citizen can acquire a tattoo with parental permission varies from state to state and is often unspecified. This does not mean that permission is allowed at any age, but rather that a minimum has not been set when parental consent is granted.
In the United States, the age at which one can legally receive a tattoo without parental permission is 18 years old. A number of states, prohibit any individual under 18 from legally acquiring a tattoo under any circumstances. In other states, a tattoo is legally allowed with parental consent at any age. The language of each law differs.