Documentation for a minor to be tattooed or pierced would consist of parent/guardian’s government issued ID (re: passport or drivers license), minors identification (re: drivers license or school ID) and minors birth certificate or official guardianship documentation.
Subsequently, can you get a tattoo without an ID?
You must be 18 to be tattooed (no exceptions, this is the law). If you are 21 or over and are lucky enough to look under 21 then you will need to provide ID. 18+ for Nipple piercings (female) 16+ for male.
Correspondingly, how do you get a tattoo if you’re under 18?
If you‘re under 18 years old and want a tattoo, don’t despair. Most states will allow you to get a tattoo if you have the consent of a parent or guardian. Sometimes this can just be written consent. In other cases, a parent or guardian must be present when the procedure takes place.