Age of Majority and Emancipation in Massachusetts
In Massachusetts, a person who has reached 18 has full legal capacity for all purposes unless another law provides otherwise.
Last checked . General information, not legal advice.
Massachusetts at a glance
- Age of majority
- 18
The rules in Massachusetts
What is the age of majority in Massachusetts?
Age of majority in Massachusetts: 18.
Where do the Massachusetts age of majority laws come from?
The rules above come from Mass. Gen. Laws ch. 231, 85P. Each source is linked on this page. We last checked them in October 2026.
What this means in practice
The age of majority is not the same as every age limit in the law. Separate rules can set the age for drinking alcohol, buying tobacco, making a will, marrying without consent or ending child support, so check the specific rule that applies to the question you have.
Emancipation usually requires a court petition and proof that the minor can support and manage themselves. A court order may grant full adult status or only specific rights, and it can end a parent's duty of support. Read the order and the statute together to see exactly what changes.
Documents signed for a minor, such as a medical consent form or a power of attorney for a child, generally stop being needed once the child reaches the age of majority. Contracts signed by a minor may be voidable, so adults dealing with minors often ask a parent or guardian to sign as well.
General information, not legal advice. Laws change, and cities can add their own rules, so check the current statute before you rely on it.
Compare with neighboring states
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