A minor child is a person who has not yet reached the age at which the law treats them as a full adult. In most U.S. states that age, called the age of majority, is 18; a handful of states set it at 19, and one at 21. Until that birthday, a minor can own property and earn wages but generally cannot sign binding contracts, make their own medical decisions, or sue in their own name. They live under the legal authority of a parent or court-appointed guardian, who is responsible for their housing, education, welfare, and day-to-day decisions. The moment the age of majority arrives, that dependency ends automatically, with no paperwork or court order required.
Older legal texts sometimes use the word “infant” for a minor. It means the same thing and has nothing to do with being a baby.
Contracts and Legal Capacity
Minors can enter contracts, but those contracts are voidable at the minor’s option. The minor can walk away and be restored to their original position; the adult on the other side cannot. A minor who disaffirms generally has to return whatever they still have from the deal, but most jurisdictions do not hold them responsible for depreciation or damage to the item while it was in their possession.
The big exception is necessities: food, clothing, shelter, basic medical care. A minor who buys a necessity can be held liable for its reasonable value even after disaffirming the contract. Without that rule, few businesses would sell essential goods to minors at all. For everything else, businesses protect themselves by asking a parent or guardian to co-sign, which puts the enforceable obligation on an adult.
Medical Decisions and Consent
Parents or legal guardians hold the default authority to consent to medical treatment for a minor. A doctor performing surgery on a 10-year-old needs the parent’s informed consent, not the child’s. Parents are legally obligated to make these decisions based on the child’s health and safety.
When a Minor Can Consent Alone
Every state carves out situations where a minor can consent to care without involving a parent. The most common categories are reproductive health, mental health counseling, and substance abuse treatment. Many states also let minors who are pregnant, married, or living independently consent to general medical care on their own.
The mature minor doctrine goes further. Under this common-law principle, an older adolescent who demonstrates sufficient understanding of their medical situation and the proposed treatment can consent without parental involvement. Physicians evaluating maturity typically look at the minor’s age (usually 14 or older), the complexity of the treatment, and the risks involved. When a provider accepts a minor’s independent consent, the provider must also protect the minor’s medical records from parental access in most circumstances.
Emergencies
When a child faces a life-threatening emergency and no parent or guardian is available, the law does not require doctors to stand by. The emergency exception rests on implied consent: the law assumes any reasonable parent would want their child treated if death or serious permanent injury were imminent. A provider who treats a child in the good-faith belief that an emergency exists is well protected from liability, even if the situation later turns out to have been less dire than it appeared.
Property and Money
A minor can own property outright, including real estate, stocks, and bank accounts. What they cannot do is manage, sell, or make binding decisions about those assets. That gap between owning and controlling is why the Uniform Transfers to Minors Act and its predecessor, the Uniform Gifts to Minors Act, exist.1Social Security Administration. Uniform Transfers to Minors Act
Under those frameworks, an adult custodian manages property for the child’s benefit until the child reaches the distribution age. The custodian has a fiduciary duty to preserve the assets and use them in the minor’s interest. Distribution ages vary by state, typically between 18 and 25 depending on local law and how the account was set up. Once the minor hits that age, the custodian must hand over full control.
When a minor receives a large sum, such as an inheritance or a personal injury settlement, courts often require more protection than a standard custodial account provides. The money may be placed in a court-supervised trust or a blocked account that no one can touch without a judge’s approval.
Working as a Minor
Federal law sets a baseline for when and how minors can work, and many states layer stricter rules on top. The Fair Labor Standards Act sets 14 as the minimum age for most non-farm employment, with narrow exceptions for younger children delivering newspapers, acting, or working in a family-owned business.2U.S. Department of Labor. Fact Sheet #43: Child Labor Provisions of the Fair Labor Standards Act for Nonagricultural Occupations
Workers aged 14 and 15 face strict scheduling limits:
- No more than 3 hours on a school day, and only outside school hours.
- No more than 8 hours on a non-school day.
- No more than 18 hours in a school week.
- No more than 40 hours in a non-school week.
- Work must fall between 7 a.m. and 7 p.m., except from June 1 through Labor Day, when the evening cutoff moves to 9 p.m.
At 16 the hour restrictions disappear. Sixteen- and seventeen-year-olds can work unlimited hours in any job the Secretary of Labor has not declared hazardous. The hazardous occupation orders currently bar anyone under 18 from 17 categories of work, including operating forklifts or heavy machinery, mining, roofing, logging, manufacturing explosives, working with radioactive materials, and operating commercial meat-processing equipment.2U.S. Department of Labor. Fact Sheet #43: Child Labor Provisions of the Fair Labor Standards Act for Nonagricultural Occupations
Minors in Court
Federal law defines a “juvenile” as someone who has not yet turned 18, and “juvenile delinquency” as a federal law violation committed before that birthday that would be a crime if committed by an adult.3Office of the Law Revision Counsel. 18 USC Ch. 403: Juvenile Delinquency Most states follow a similar framework, channeling offenses by minors into a juvenile court system focused more on rehabilitation than punishment.
That protection has limits. Every state has some mechanism for moving a minor into adult criminal court for serious offenses like murder or violent felonies. The four common transfer paths are statutory exclusion (the legislature removes certain crimes from juvenile court entirely), judicial transfer (a juvenile court judge orders the case moved), prosecutorial discretion (the prosecutor chooses which court to file in), and “once an adult, always an adult” rules. The triggering age and offenses vary by state.
Suing and Being Sued
A minor cannot file a lawsuit independently. An adult representative has to step in: either a “next friend,” typically a parent who initiates the suit on the child’s behalf, or a “guardian ad litem,” someone the court appoints specifically to protect the child’s interests in that case. The representative makes litigation decisions, but any settlement involving a minor’s claim usually needs court approval. If a case moves forward without a proper representative, the court can dismiss it or throw out any judgment already entered.
When Parents Pay for What Their Child Did
Nearly every state has a parental responsibility statute that can hold parents financially liable when their minor child intentionally damages property, injures someone, shoplifts, or vandalizes. These statutes sit on top of common-law negligence claims, which can apply when a parent knew their child had dangerous tendencies and failed to supervise.
Most states cap statutory liability at a specific dollar amount per incident, and the caps vary widely. Some limit liability to a few hundred dollars. Others set caps between $5,000 and $25,000. A handful impose no cap at all for certain categories of harm, particularly where motor vehicles or firearms are involved. Most of these statutes require the child’s conduct to have been willful or intentional, though some extend to negligent acts in specific contexts like car accidents.
Parental liability under these statutes generally ends when the child reaches the age of majority or when a court terminates parental rights. The caps limit only the statutory claim. A separate common-law negligence suit against a parent who personally failed to supervise a known-dangerous child is not subject to them.
Becoming an Adult Early
Emancipation is the legal process that grants a minor adult status before they reach the age of majority. Most states require the minor to petition a court and show they are already living independently, managing their own money, and able to support themselves without parental help. Judges look for concrete evidence: steady employment, a lease or other proof of housing, and the ability to handle adult responsibilities. Many states require the minor to be at least 16 to petition; some set the floor at 17.
Once a court grants emancipation, the change is sweeping. The minor gains the legal capacity to sign binding contracts, consent to medical treatment, make educational decisions, and manage their own income and property. The parents’ legal duty to provide financial support and housing permanently ends. Courts do not grant emancipation lightly, because a minor who later falls on hard times generally cannot undo the decree.
Court petitions are not the only route. In many states, certain life events trigger emancipation automatically. Marriage is the most common: a married minor is treated as an adult for legal purposes in most jurisdictions, even without a separate order. Military enlistment can also result in automatic emancipation, though the details depend on the state and on whether parents keep providing support after the minor enlists. Federal law allows enlistment at 17 with written parental consent, or without it if no parent or guardian is entitled to custody and control of the minor.4Office of the Law Revision Counsel. 10 USC 505 – Regular Components: Qualifications, Term, Grade
Filing fees for emancipation petitions range from nothing to several hundred dollars depending on the court. Some states waive fees for minors who can show financial hardship, which is worth asking about since most minors seeking emancipation are not flush with cash.