New Hampshire Age of Majority Law

Minors – Age of Majority – New Hampshire

The common law rule that a person is a minor to the age of 21 is hereby abrogated. A person who has reached his eighteenth birthday is hereby declared to be of majority for all purposes, except as prohibited by the constitution of New Hampshire and of the United States.

Title 1, Chap.21-B, §21-B:1


Age of Majority
18 (§21-B:1)

Not specified

Can join with spouse in release of homestead interests (§460:4)

Ability to Sue
Next friend; court may appoint guardian ad litem (§498-A:22

Consent to Medical Treatment
12 or older may consent to drug treatment (§318-B:12-a)