How Old do you have to be for a tattoo? State-dependent: 18 standard, some allow younger with consent (written/presence). Prohibited under 18 in several states. Regret common in minors. Contact Lopez Law Group for legal support on issues. Free eval: (956) 968-7800. https://fernandojlopez.com/how-old-do-you-have-to-be-to-get-a-tattoo/