What Age Can You Sign a Legal Contract in the US

In the United States, you must be 18 years old to sign a legally binding contract. Minors, meaning anyone under age 18, generally lack the legal capacity to enter enforceable agreements, with limited exceptions including contracts for necessities, military enlistment at age 17, and emancipated minors.

The Legal Age Threshold and Why 18 Is the Baseline

Age 18 is the standard age of majority, meaning the age at which a person gains full legal rights and responsibilities, in all 50 U.S. states. At this age, an individual is presumed to have the cognitive maturity and legal standing to be bound by a contract’s terms without special protections.

Contract law in the United States treats the age of majority not as a formality but as a genuine threshold for legal capacity, meaning the recognized legal ability to enter binding agreements. Courts across every jurisdiction have consistently held that contracts signed by individuals under 18 are voidable, not automatically void, which is a critical distinction explored in depth below.

The age of majority standard traces back to English common law, the body of law inherited by American courts from Britain, which historically set the threshold at 21. The United States progressively lowered that threshold across most states during the 20th century, with the trend accelerating after the 26th Amendment was ratified in 1971, which granted 18-year-olds the right to vote and reinforced the political and social legitimacy of treating 18 as the boundary of adult legal status.

The Four Elements Every Enforceable Contract Requires

Before examining age rules in depth, it is worth understanding what makes any contract legally enforceable in the first place. Age of majority intersects with a broader framework of contract validity that applies to every agreement in the U.S.

Legal capacity is the element most directly disrupted by age. A contract missing any one of these four elements is either void or unenforceable regardless of the parties’ ages, but when capacity is absent because of minority status, the agreement occupies the special voidable category described throughout this article.

Contracts Signed by Minors: Voidable vs. Void

A voidable contract is one that can be canceled at the minor’s option but remains in force until the minor chooses to disaffirm it, meaning formally reject or cancel it. This is meaningfully different from a void contract, which has no legal effect at all from the moment it is created.

When a minor signs most contracts in the U.S., the agreement is voidable by the minor only. The adult or business on the other side cannot use the minor’s age as a reason to escape their own obligations. This asymmetry meaningfully protects younger signers while holding the adult party fully accountable.

The minor’s right to disaffirm typically extends until they reach age 18 and, in most states, for a reasonable period after turning 18. That reasonable period varies by state but is commonly interpreted as within a few months of reaching the age of majority.

With its intuitive interface & versatile features, the Age Calculator app is an essential tool for anyone looking to keep track of their age & the ages of their loved ones.

How Disaffirmance Actually Works in Practice

Disaffirmance does not require a court filing in most cases. A minor or newly turned adult can disaffirm by written notice, verbal communication, or simply by conduct that clearly signals rejection of the agreement. Written disaffirmance is strongly advisable because it creates a clear record and a defined date.

When a minor disaffirms a contract, the general rule is that both parties must be restored to their original positions, a principle called restitution, meaning the obligation to return whatever was received under the agreement. The minor must return whatever they received, and the other party must return payments made.

Courts vary on whether a minor must return goods that have depreciated or been consumed. Some states require only the return of whatever remains while others require full value restoration, making the specific jurisdiction a critical factor in predicting the financial outcome of disaffirmance.

What Happens After a Minor Turns 18

Once a person reaches age 18, they have two options regarding contracts they signed as a minor:

1. Ratify the contract, meaning they confirm and accept its terms, which makes the agreement fully enforceable going forward.
2. Disaffirm the contract, meaning they formally reject it, releasing themselves from future obligations.

Ratification, the formal acceptance of a previously voidable agreement, does not require a new signed document. Courts have found that simply continuing to perform under a contract after reaching 18, such as making ongoing payments, constitutes implied ratification that makes the deal permanently binding.

Silence alone is generally not treated as ratification. A newly turned 18-year-old who simply does nothing for several months following their birthday may still retain the right to disaffirm in many states. However, accepting new benefits under the contract after turning 18 almost universally constitutes implied ratification across every U.S. jurisdiction.

The Necessities Exception: When Minors Are Bound

Minors cannot disaffirm contracts for necessities, a legal category that courts define as goods or services essential to the minor’s health, safety, and welfare. This doctrine prevents minors from consuming essential services and then escaping payment solely on the basis of age.

Courts apply the necessities doctrine carefully. A court in California, for instance, will look at whether the minor had a parent or guardian capable of providing the item. If a parent was present and able, the court may not classify the contracted item as a true necessity.

The necessities doctrine also raises a frequently misunderstood point about payment. Even when a contract with a minor is voidable, the minor remains liable under the concept of quasi-contract, meaning an obligation implied by law rather than by agreement, for the reasonable value of necessities actually received. The minor cannot disaffirm a medical treatment contract and then refuse to pay anything at all; they owe the fair market value of the care provided.

Emancipated Minors and Their Contractual Rights

Emancipation is the legal process by which a minor under age 18 is granted adult legal status before reaching the standard age of majority. An emancipated minor, meaning a person legally released from parental control by a court order or by operation of law, can sign contracts with full legal effect.

Emancipation can occur through three primary pathways:

• Court order: A judge formally declares the minor emancipated, typically after the minor demonstrates financial independence and the ability to manage their own affairs.
• Marriage: In states that permit marriage under 18 with parental or judicial consent, marriage frequently confers emancipated status automatically.
• Military service: Enlisting in the U.S. Armed Forces, possible at age 17 with parental consent, often grants emancipated status under state law.

Key Finding: Emancipated minors in states like California, Texas, and Florida are granted full contracting capacity, meaning every agreement they sign carries the same enforceability as one signed by an adult.

What Emancipation Does Not Change

Emancipation grants civil legal capacity for contractual and financial purposes, but it does not unlock every adult right simultaneously. An emancipated 16-year-old in California can sign a lease and hire an attorney, but they still cannot purchase alcohol, vote, or purchase a handgun. Age-specific federal and state statutes governing regulated activities remain fully in effect regardless of emancipation status.

Can Parents Reverse an Emancipation Order?

Courts are generally reluctant to reverse emancipation orders once granted because the minor has reorganized their life around that legal status. Some states permit a petition to rescind emancipation if circumstances change dramatically, such as the minor becoming unable to support themselves due to a serious illness or injury. This is uncommon and requires a showing that reversal genuinely serves the minor’s best interest.

State-by-State Variations Worth Knowing

While the baseline age of 18 applies nationwide, states differ meaningfully on several surrounding rules.

Alabama and Nebraska are the two states that set the age of majority at 19 rather than 18 for a broader range of civil purposes. Individuals and businesses operating in those states should verify which age threshold applies to the specific contract type before relying on the standard 18 baseline.

California’s entertainment industry has shaped some of the most significant minor contract law in the country. The California Family Code Section 6750 statute, which requires superior court approval for entertainment contracts involving minors, was designed specifically to protect child performers while giving studios reliable enforceability.

How Employment Contracts Interact with Age Rules

Employment contracts involving minors operate under a dual framework of federal and state law. Federal law under the Fair Labor Standards Act (FLSA), meaning the primary federal statute governing wages and working hours, permits employment of minors as young as 14 in non-hazardous jobs.

The enforceability of an employment agreement signed by a minor depends on the state. Most states treat minor employment contracts as voidable but enforce wage obligations through child labor statutes regardless of contract formalities. This means an employer cannot refuse to pay a 16-year-old worker by claiming the employment contract was unenforceable due to age.

Work permit requirements, known as employment certificates or age certificates, are required by most states for workers under 18 and must be obtained from a school or government authority before employment begins. These permits do not create contractual capacity but establish the lawfulness of the employment relationship.

Hazardous Occupations and the Under-18 Prohibition

The FLSA’s Hazardous Occupations Orders (HOs) prohibit workers under 18 from performing certain categories of dangerous work entirely, regardless of any contract or parental consent. These prohibited categories include:

• Operating or cleaning meat processing machinery
• Mining and excavation work
• Roofing operations
• Driving motor vehicles as a primary job duty for workers under 17
• Manufacturing and storing explosives
• Operating power-driven circular saws or band saws

No contract, parental signature, or emancipation order overrides these federal prohibitions. An employer who places a 17-year-old in a prohibited hazardous occupation faces federal penalties even if the minor and their parents signed a written consent agreement.

Digital Agreements, Terms of Service, and Minors

When a 15-year-old clicks “I Agree” on a terms of service agreement, that agreement is technically voidable under the same doctrine that governs paper contracts. Enforcement in the digital space operates differently in practice, however, because platforms rarely have systems to identify and respond to minor-status disaffirmance claims.

The Children’s Online Privacy Protection Act (COPPA), the federal law requiring verifiable parental consent before collecting personal data from children under 13, establishes age 13 as a threshold for data-related digital interactions. COPPA does not grant contractual capacity but shapes how platforms must handle younger users.

Most major platforms set their minimum account age at 13 per COPPA compliance, with full terms of service technically directed at users 18 and older. This gap between the technical voidability of minor agreements and the practical reality of digital platform usage remains one of the most actively discussed areas of contract law in the United States today.

The Age Assurance Problem in Digital Contracting

No federal law currently requires platforms to implement robust age verification for users between 13 and 17. This creates a structural gap where millions of minors are technically party to terms of service agreements that are simultaneously voidable and practically unenforceable in either direction.

Several states, including California with its Age-Appropriate Design Code Act, have moved to impose stricter obligations on platforms regarding minors. These laws focus on data protection rather than contractual capacity directly, leaving the core voidability question unresolved at the federal level.

The practical consequence is that if a 16-year-old makes in-app purchases, enters a premium subscription, or agrees to arbitration clauses embedded in terms of service, all of those agreements are presumptively voidable. Platform companies currently absorb this legal risk as a cost of doing business rather than implementing verification systems capable of reliably confirming user age.

Arbitration Clauses and Minors

Arbitration clauses, meaning contract provisions that require disputes to be resolved through private arbitration rather than public courts, present a specific problem when minors are involved. If the underlying contract is voidable, the arbitration clause embedded within it is generally voidable as well.

This matters because a minor who disaffirms a service agreement is not bound by the arbitration provision in that agreement and retains the right to bring claims in public court. Several high-profile cases have tested whether platform terms of service containing arbitration clauses can bind minors, with courts in California and New York frequently ruling in favor of the minor’s right to proceed in court.

Parents who co-sign agreements containing arbitration clauses are bound by those clauses in their own right, even if the minor is later released from the contract through disaffirmance.

Medical Consent Contracts and the Age Exception Landscape

Medical care represents one of the most nuanced areas where minors gain limited contractual and consent rights well below age 18. These rights vary significantly by state and by the specific type of care involved.

These medical consent exceptions do not translate into broad contractual capacity. A 14-year-old who can consent to their own mental health treatment in Georgia still cannot sign a lease or a car loan. The exceptions are narrowly construed and apply only to the specific category of care the legislature intended to protect.

Parental Co-Signing and Guarantees

Parental co-signing, meaning a parent or legal guardian adding their signature to an agreement and assuming personal liability for the minor’s obligations, is the most widely used solution when a minor needs a binding contract. The co-signing parent is fully bound even if the minor subsequently disaffirms.

This approach is common in:

• Auto loans for young drivers under 18
• Apartment leases for college students
• Music and acting contracts in states without judicial approval mechanisms
• Credit card applications for young adults just reaching 18

A co-signed contract is enforceable against the parent regardless of what the minor later decides. The minor’s disaffirmance does not release the adult co-signer from their independent obligation.

The Guarantor vs. Co-Signer Distinction

A guarantor, meaning a person who agrees to pay only if the primary party defaults, occupies a different legal position than a co-signer. A co-signer is jointly and severally liable from the beginning, meaning the creditor can pursue either party for the full amount without first exhausting remedies against the other.

When parents sign alongside a minor child, lenders and landlords typically structure the adult’s role as a co-signer rather than a guarantor precisely because co-signer liability is more immediate and easier to enforce. Parents should read agreements carefully to confirm which role they are assuming before signing.

Financial Contracts: Bank Accounts, Credit, and Investing

Financial institutions apply their own age frameworks layered on top of general contract law, creating a practical set of thresholds that many families encounter before children reach 18.

Bank Accounts

Most banks permit minors to hold custodial accounts, meaning accounts controlled by a parent or guardian on the minor’s behalf, at any age. Joint accounts that give the minor independent access and signing authority are generally available starting at age 13 to 16 depending on the institution, with the parent remaining jointly liable.

At age 18, the minor can typically convert a joint or custodial account into a fully independent account in their own name. Some banks require the parent’s authorization to complete this conversion if the account was opened under a custodial structure.

Credit Cards

The Credit Card Accountability Responsibility and Disclosure Act of 2009 (CARD Act) prohibits issuers from extending independent credit card accounts to anyone under 21 unless the applicant can demonstrate independent income or assets sufficient to repay, or obtains a co-signer who is 21 or older. This creates a layered threshold: age 18 for basic contractual capacity, and age 21 for independent credit card access without demonstrated income.

Authorized user status, meaning being added to another person’s existing account without independent liability, is available to minors of any age at most issuers’ discretion. Being an authorized user builds credit history but does not create contractual liability for the minor.

Investment Accounts

Minors cannot independently open brokerage accounts because securities agreements require full contractual capacity. The standard solution is a custodial account under the Uniform Transfers to Minors Act (UTMA) or Uniform Gifts to Minors Act (UGMA), meaning accounts managed by a custodian, typically a parent, until the minor reaches the age of majority specified in the account agreement.

That designated age is 18 in most states but 21 in several, including California for UTMA accounts, Delaware, and South Carolina. At the designated age, full control of the account and all its assets transfers irrevocably to the now-adult beneficiary, and parents cannot prevent that transfer even if they disagree with how the funds will be used.

Real Estate Transactions Involving Minors

Real estate contracts signed by minors are voidable under the standard rule, which creates serious complications in property transactions. Title companies and mortgage lenders generally refuse to close transactions where a minor is a named buyer or seller without additional protections in place.

When a minor inherits real estate through a will or intestate succession, meaning inheritance when no will exists, the property is typically managed by a court-appointed guardian or trustee until the minor reaches 18. The guardian may need court approval to sell, lease, or encumber the property on the minor’s behalf.

Some states allow a parent to petition the court for authorization to sell a minor’s real property interest, with the sale proceeds held in a blocked account or trust for the minor’s benefit until they reach majority. This court-supervised process adds time and cost but resolves the voidability problem by substituting judicial authority for the minor’s missing contractual capacity.

Settlement Agreements and Releasing Legal Claims

A settlement agreement that releases a minor’s legal claims requires court approval in virtually every U.S. jurisdiction to be permanently binding. Without court approval, the minor retains the right to bring the same legal claims again after turning 18, regardless of what their parents agreed to on their behalf.

The court approval process for minor settlements typically involves these steps:

1. Filing a petition with the probate or civil court describing the claim and proposed settlement amount
2. Submitting supporting documentation, including medical records in personal injury cases
3. A hearing before a judge who evaluates whether the settlement is in the minor’s best interest
4. A court order approving the settlement and specifying how funds will be held
5. Establishment of a blocked account or structured trust to hold proceeds until the minor reaches 18

Settlement funds in court-approved minor’s accounts are typically inaccessible to the parents. The minor receives full control at 18 or at whatever age the court specifies in the approval order.

Wills, Trusts, and Estate Planning Before 18

Most states set age 18 as the minimum to execute a valid will, the legal document that directs how a person’s assets are distributed after death. A will signed by a 17-year-old is generally void, not merely voidable, because incapacity of a minor to execute a will is treated as an absolute bar rather than a protective right the minor can waive.

Notable exceptions exist. Members of the armed forces on active duty can execute valid wills at any age in most states, reflecting the same policy rationale that permits military enlistment at age 17. Some states also recognize holographic wills, meaning wills written entirely in the testator’s own handwriting, under more flexible rules that may offer limited options for older minors in extraordinary circumstances.

Trusts established for the benefit of minors are created and controlled by the adult who funds them, not by the minor beneficiary. A minor can be a trust beneficiary at any age. The UTMA and UGMA custodial account structures described earlier in this article are simplified versions of this trust concept that do not require a formal trust document.

Powers of Attorney and Minors

A power of attorney, meaning a legal document authorizing one person to act on another’s behalf in legal or financial matters, cannot be executed by a minor. Because a power of attorney is itself a contract requiring full legal capacity, the grantor must be 18 or older and mentally competent at the time of signing.

Parents automatically hold legal authority to act on behalf of their unemancipated minor children through parental rights, which makes a formal power of attorney unnecessary in most family contexts. When a minor needs someone other than a parent to act on their behalf, the proper mechanism is typically a guardianship appointment through the courts rather than a power of attorney.

How Courts Treat Contract Disputes Involving Minors

Courts apply a distinctly protective interpretive lens when a contract dispute involving a minor reaches litigation. Judges are generally inclined to resolve ambiguities in favor of the minor, and they scrutinize whether the adult party took reasonable steps to verify the minor’s age before contracting.

The statute of limitations, meaning the legally defined window of time within which a lawsuit must be filed, is typically tolled, meaning paused, for minors. The clock for a contract-related lawsuit does not begin running until the minor reaches 18, giving newly adult plaintiffs the full statutory period from that birthday to bring claims based on agreements they entered as children.

Equitable estoppel, meaning a legal principle that prevents a party from taking a position inconsistent with their prior conduct, is sometimes argued against minors who disaffirm contracts after receiving substantial benefits. Courts are divided on whether equitable estoppel can override a minor’s statutory right to disaffirm, with the majority rule favoring the minor’s right unless fraud was directly involved.

Contracts, Age, and Immigration Status

Undocumented minors and minors with various visa classifications face the same age-of-majority thresholds as U.S. citizens for most contract purposes under state law. State contract law generally does not condition capacity on citizenship or immigration status.

However, certain contracts require a Social Security number or lawful presence verification, which creates practical barriers regardless of age. Financial contracts, employment agreements subject to I-9 verification, and federal student loan agreements all require documentation that may be unavailable to minors without lawful immigration status. These access limitations operate independently of the age 18 threshold and are not resolved simply by the minor reaching adulthood.

Risks of Contracting With Someone Under 18

Businesses that knowingly contract with minors face genuine legal exposure. If a 17-year-old signs a service agreement for web design and later disaffirms, the business typically must return any payment received and may lose the value of services already rendered.

Reasonable assumptions about a minor’s age do not provide legal protection in most states. Even if a minor presents false identification claiming to be 21, the contract generally remains voidable. Some states have enacted statutes that reduce or eliminate the minor’s disaffirmance right when fraudulent misrepresentation of age occurred, but this protection is not uniform across all 50 states.

Business Risk Mitigation Strategies

Businesses that cannot practically avoid contracting with individuals who may be minors have several risk reduction tools available:

• Age verification at the point of contract: Require government-issued ID and document the verification process with a date-stamped record
• Parental co-signature requirements: Make co-signature a condition of contract formation for all individuals under 18
• Representation and warranty clauses: Include a contractual representation by the signing party that they are 18 or older, which strengthens the fraudulent misrepresentation argument if the party was actually a minor
• Scope narrowing toward necessities: Structuring agreements around services that qualify as necessities reduces disaffirmance risk
• Jurisdictional review: In states like California with judicial approval mechanisms for entertainment and similar contracts, pursue court approval proactively

None of these strategies is foolproof, but layering multiple protections substantially reduces the practical risk of minor disaffirmance affecting business operations.

Turning 18: The Full Range of Contracts Now Available

Reaching age 18 meaningfully unlocks the full range of contractual rights under U.S. law. The following agreements become independently accessible at exactly 18:

1. Sign a lease or rental agreement independently
2. Take out a personal loan or student loan in your own name
3. Enter a legally binding employment contract without parental authorization
4. Open a credit card account, subject to income requirements under the CARD Act
5. Purchase a vehicle with financing in your own name
6. Enter service agreements, including cell phone plans and streaming subscriptions
7. Sign an independent contractor or freelance agreement
8. Execute a valid will in most states
9. Purchase real estate and sign mortgage documents independently
10. Open a brokerage account and trade securities without a custodian
11. Enter settlement agreements and releases in legal disputes without court approval
12. Sign binding arbitration agreements with full enforceability on both sides
13. Execute a power of attorney granting another person authority to act on your behalf
14. Open a fully independent bank account and remove a parent from joint accounts

One area that remains restricted past 18 is alcohol-related contracts in licensed settings. Federal guidance and state law consistently apply the age 21 threshold to purchase and service agreements in that context.

Practical Checklist Before Signing Any Contract Near Age 18

For individuals approaching or just reaching age 18, and for parents managing their children’s affairs, the following considerations capture the most practically important variables.

If you are under 18:

• Confirm whether the contract is for a necessity, which you generally cannot disaffirm
• Check whether your state permits parental co-signature to make the agreement binding on the adult side
• Understand that you can likely disaffirm most non-necessity contracts before and shortly after turning 18
• Ask whether your state has a specific statute governing the type of contract involved, particularly for entertainment and employment agreements

If you are a parent co-signing for a minor:

• Understand you remain fully liable even if the minor disaffirms
• Clarify whether you are signing as a co-signer with immediate joint liability or as a guarantor with liability only upon default
• Review whether court approval is needed, particularly for settlements releasing the minor’s legal claims
• Confirm the contract does not involve prohibited hazardous occupations under federal FLSA rules

If you are a business contracting with someone near 18:

• Verify age with government-issued identification and document that verification with a date-stamped record
• Include an age representation clause in the agreement
• Require a parental co-signature for anyone under 18 as a standard condition of contract formation
• In California, New York, and similar states, explore judicial approval for entertainment-related agreements
• Consult state-specific rules if operating in Alabama or Nebraska, where the age of majority is 19

FAQ’s

At what age can you legally sign a contract in the United States?

You must be 18 years old to sign a legally binding contract in the United States in almost all circumstances. This is the age of majority recognized across all 50 states, and contracts signed before this age are generally voidable at the minor’s option. The only broad exceptions are contracts for necessities, agreements by emancipated minors, and military enlistment at age 17.

Can a 16-year-old sign a contract?

A 16-year-old can physically sign a contract, but the agreement is voidable, meaning the minor can cancel it before or shortly after turning 18. The only exceptions are contracts for necessities like food or medical care, or if the 16-year-old has been legally emancipated by a court. The adult or business on the other side remains fully bound regardless of the minor’s choice to disaffirm.

Can a 17-year-old sign a legally binding contract?

A 17-year-old can sign a contract, but it is not fully binding on them and can be disaffirmed until a reasonable time after they turn 18. The adult or business on the other side remains fully bound by its terms throughout. Military enlistment at 17 with parental consent is one of the most significant exceptions to this general rule.

What makes a contract void vs. voidable when a minor signs it?

A voidable contract remains in effect until the minor chooses to cancel it, while a void contract has no legal effect from the start. Minor-signed contracts in the U.S. are almost always voidable, not void, meaning they carry legal weight until the minor acts to disaffirm them. Wills signed by minors are a notable exception and are treated as void rather than voidable in most states.

Can parents make a contract binding on their minor child?

Parents cannot force a contract to be binding on their minor child by signing on the child’s behalf alone, but they can co-sign the agreement and assume full personal liability for its obligations. If the minor disaffirms the contract, the parent co-signer remains independently bound and cannot use the minor’s disaffirmance as a defense. Court approval of the contract, available in some states for specific contract types, is the most reliable way to prevent future disaffirmance.

What is the legal age to sign a contract in California?

In California, the standard age to sign a legally binding contract is 18, consistent with the statewide age of majority. California law also allows superior court approval of entertainment contracts involving minors under California Family Code Section 6750, which makes those specific agreements non-voidable once judicially confirmed. Emancipated minors in California can sign contracts at any age following the court’s emancipation declaration.

Can a minor disaffirm a contract after turning 18?

Yes, in most states a person can disaffirm a contract they signed as a minor for a reasonable period after reaching 18. Courts commonly interpret that reasonable period as within a few months of the 18th birthday, though the exact window varies by state. Continuing to accept benefits under the contract or making payments after turning 18 typically constitutes implied ratification that permanently eliminates the right to disaffirm.

Does an emancipated minor have full contract rights?

Yes, a legally emancipated minor has the same contractual capacity as an adult, regardless of their actual age. Emancipation can occur through court order, marriage, or military enlistment, and once granted it gives the minor the right to sign binding agreements independently. Emancipation does not, however, override age-specific federal restrictions on alcohol purchase, voting, or firearm acquisition.

Can a minor sign a contract for a car?

A minor can sign a vehicle purchase agreement, but the contract is voidable and can be canceled before or shortly after turning 18. Most auto lenders require a parent or guardian co-signer precisely because minor-signed loan agreements are not reliably enforceable without an adult guarantor also on the contract. The lender can pursue the co-signing parent for the full loan amount even if the minor disaffirms.

What age can you sign an apartment lease without a parent?

You must be 18 to sign an apartment lease independently in virtually every U.S. state. Landlords routinely require proof of age because leases signed by minors under 18 are voidable and offer little legal protection if the minor decides to disaffirm and vacate. An emancipated minor can sign a lease before 18, and a parent co-signer can make a lease enforceable from the adult’s side regardless of the minor’s age.

What contracts can minors legally be held to in the US?

Minors can be held to contracts for necessities, meaning food, clothing, shelter, and medical care, and they remain liable for the reasonable value of necessities received even if they disaffirm the contract. Contracts ratified after reaching 18, contracts executed by emancipated minors, and contracts for which court approval has been obtained are also fully enforceable. Outside these categories, the general rule is that minor-signed contracts are voidable at the minor’s election.

Does clicking “I Agree” on a website create a binding contract for someone under 18?

Clicking an online terms of service agreement while under 18 creates a voidable contract subject to the same disaffirmance rules as paper agreements. The Children’s Online Privacy Protection Act (COPPA) separately requires parental consent for data collection from children under 13, but COPPA compliance does not resolve the voidability question for users between 13 and 17. Platform companies generally absorb this legal risk because robust age verification systems that could prevent minor account creation are not currently required by federal law.

What is the minimum age to sign a military enlistment contract?

You can enlist in the U.S. Armed Forces at age 17 with written parental consent, making military enlistment one of the most significant exceptions to the standard contracting age of 18. This enlistment contract is binding on the minor, and it frequently triggers emancipated status under applicable state law. Active duty military members can also execute valid wills at any age in most states, another exception to the standard age 18 requirement for estate planning documents.

Can a minor sign a freelance or independent contractor agreement?

A minor can sign a freelance agreement, but it carries the same voidable character as other minor contracts and can be disaffirmed before or shortly after turning 18. Businesses hiring freelancers under 18 take the risk that the minor will disaffirm and seek return of any money paid, making parental co-signatures strongly advisable. In California and New York, judicial approval of certain minor service contracts can eliminate the disaffirmance risk entirely.

What happens if a minor lies about their age to get a contract?

In most states, a minor who fraudulently misrepresents their age may lose the right to disaffirm the contract under equitable principles, meaning fairness-based legal rules. Some states have enacted specific statutes that eliminate the disaffirmance right when the minor presented false identification to obtain the agreement. The outcome varies significantly by jurisdiction, which is why businesses should implement documented age verification procedures rather than relying solely on the fraudulent misrepresentation defense.

Do settlement agreements need court approval when a minor is involved?

Yes, in virtually every U.S. jurisdiction a settlement that releases a minor’s legal claims requires court approval to be permanently binding. Without court approval, the minor retains the right to bring the same legal claims again after turning 18, regardless of what their parents agreed to on their behalf. Approved settlement funds are typically held in a blocked account inaccessible to parents until the minor reaches the age specified in the court order.

What is the minimum age to open a brokerage account and invest?

Minors cannot independently open brokerage accounts because securities agreements require full contractual capacity at age 18. The standard alternative is a UTMA or UGMA custodial account managed by a parent or guardian until the minor reaches the designated age of majority under the account agreement. That age is 18 in most states but 21 in several, including California for UTMA accounts, Delaware, and South Carolina, and the transfer of control at that age is irrevocable.

Does the CARD Act affect the age at which you can get a credit card?

The Credit Card Accountability Responsibility and Disclosure Act of 2009 (CARD Act) sets age 21 as the threshold for an independent credit card account unless the applicant under 21 can demonstrate sufficient independent income or obtains a co-signer who is 21 or older. Reaching age 18 grants basic contractual capacity but does not override this specific federal statute. Authorized user status on a parent’s account is available at any age and builds credit history without creating independent contractual liability.

Are states with an age of majority above 18 different from the national standard?

Alabama and Nebraska set the age of majority at 19 for a broader range of civil purposes, meaning contracts signed at 18 may still be voidable in certain contexts in those states. Anyone contracting in those two states should verify which age threshold applies to the specific agreement type before proceeding. Mississippi historically applied a higher threshold for some contract types but now treats 18 as the operative age for most commercial agreements.

Can a minor execute a valid will?

In most states, the minimum age to execute a valid will is 18, and a will signed by someone younger is generally void rather than voidable. Active duty military members represent a notable exception and can execute valid wills at any age in most U.S. states. Some states also recognize holographic wills, meaning wills written entirely in the testator’s own handwriting, under slightly more flexible rules, though these are still typically subject to the age 18 minimum.

What happens to a minor’s lawsuit if the statute of limitations runs while they are under 18?

The statute of limitations, meaning the legal deadline for filing a lawsuit, is typically tolled, meaning paused, for minors in the United States. The clock does not begin running on most claims until the minor reaches age 18, giving them the full statutory period from that birthday to bring legal action. This tolling rule applies to contract disputes, personal injury claims, and most other civil causes of action where the plaintiff was a minor when the claim arose.

What is a quasi-contract and how does it apply to minors?

A quasi-contract is an obligation implied by law rather than created by a voluntary agreement, used by courts to prevent one party from being unjustly enriched at another’s expense. When a minor disaffirms a contract for necessities, courts apply quasi-contract principles to require the minor to pay the reasonable value of goods or services actually received, even though the underlying contract is unenforceable. This prevents minors from consuming essential services entirely for free simply by invoking their right to disaffirm.