In 47 states and the District of Columbia, you can legally move out at 18 while still in high school, because reaching 18 ends your parents’ legal custody and gives you the right to choose where you live. Your parents cannot force you to stay, and police will not return you home. What changes is everything that used to happen quietly in the background: rent, enrollment paperwork, insurance, taxes, and financial aid all land on you.
The Three States Where 18 Isn’t Enough
Alabama and Nebraska set the age of majority at 19. Mississippi sets it at 21.1Cornell Law Institute. Age of Majority If you’re 18 in one of those states, your legal footing is different from an 18-year-old anywhere else.
Nebraska specifically allows anyone 18 or older to sign binding contracts and leases, so the practical picture there looks close to normal. Alabama sits in the middle: a court would have a hard time forcing an 18-year-old back home, but some rights remain restricted until 19. Mississippi is the strictest of the three. An 18-year-old there may need to file for formal emancipation to gain full legal independence before turning 21. If you live in any of these states, look up your state’s emancipation and contract rules before signing anything.
Enrolling Yourself at a New School
Public school enrollment follows where you live, not where your parents live. Once you move, you have to prove residency in the new district, and because you’re 18 you handle it yourself. A lease in your name, a utility bill, government mail at your address, or a notarized affidavit of residency from whoever you’re staying with will usually satisfy the district.
Staying inside the same district is simpler; you just update your address at the district office. Moving to a new district means withdrawing from your old school, enrolling at the new one, and asking for your academic records to be transferred. You’ll sign every form yourself. Permission slips, attendance notes, disciplinary paperwork — your signature is the one the school needs.
If You Don’t Have Stable Housing
Not every 18-year-old who leaves home lands in a signed lease. If you’re couch-surfing, in a shelter, or otherwise without a fixed nighttime residence, the McKinney-Vento Homeless Assistance Act gives you enrollment rights that override the usual residency rules.2Office of the Law Revision Counsel. 42 USC 11432 – Grants for State and Local Activities for the Education of Homeless Children and Youths Schools must enroll you immediately, even without proof of residency, prior records, or a guardian in the picture.
You can also stay in your previous school — your “school of origin” — after moving out of its attendance zone, and the district has to arrange transportation to get you there.2Office of the Law Revision Counsel. 42 USC 11432 – Grants for State and Local Activities for the Education of Homeless Children and Youths Every district has a McKinney-Vento liaison. Ask the front office to connect you with that person.
Who Controls Your School Records Now
At 18, the Family Educational Rights and Privacy Act moves control of your education records from your parents to you.3Office of the Law Revision Counsel. 20 USC 1232g – Family Educational and Privacy Rights Your school cannot release grades, attendance, or disciplinary information to your parents without your written consent, and the school will contact you, not them, about academic matters.
One exception matters here. If your parents still claim you as a dependent on their federal tax return, the school is allowed to share your records with them even if you don’t consent.4U.S. Department of Education – Protecting Student Privacy. Eligible Student Schools don’t always do this, but the legal wall is lower. If you want your parents out of your academic life, the tax dependency question is more than a money question.
Signing a Lease and Paying for Your Own Life
You can sign binding contracts at 18, and a lease is usually the first one. You’re on the hook for every term. If your roommates disappear, you still owe the full rent. Landlords can legally rent to you, but many will want a co-signer if you have no credit or limited income. A security deposit is standard, typically one to two months’ rent.
You can open a bank account in your own name without a parent on it. Any bank will do this for someone 18 or older with valid ID, and you’ll want the account for rent payments, direct deposit, and a basic financial track record.
Credit cards are the harder piece. Federal rules prohibit issuers from opening a credit card for anyone under 21 unless you can show independent ability to make minimum payments, or you have a co-signer who is at least 21.5eCFR. 12 CFR 226.51 – Ability to Pay In practice, that means showing job income, or starting with a secured card where your deposit is your credit limit.
Health Insurance and Medical Consent
Moving out does not knock you off your parents’ health plan. Under the Affordable Care Act, any plan that offers dependent coverage has to keep offering it to you until you turn 26, regardless of where you live, whether you’re in school, whether you’re married, or whether you have other coverage options.6Office of the Law Revision Counsel. 42 USC 300gg-14 – Extension of Dependent Coverage7eCFR. 29 CFR 2590.715-2714 – Eligibility of Children Until at Least Age 26 The catch: your parents don’t have to keep you on the plan. If they drop you, or don’t have coverage in the first place, you’ll be looking at the marketplace, employer coverage, or Medicaid if your income qualifies.
For medical decisions, 18 gives you full authority over your own care. Doctors ask you for consent, and your parents can’t access your health information under HIPAA without your permission.
Taxes: Are You Still a Dependent?
Moving out doesn’t automatically make you tax-independent. The IRS uses a residency test: to claim you as a qualifying child, a parent has to have lived with you for more than half the year.8Internal Revenue Service. Dependents Move out in June and your parent likely still claims you for that tax year. Move out in January and the math tips the other way.
This matters for more than the tax bill. Dependency status feeds back into your FERPA rights at school, as noted above, and if you and your parent both try to claim you, the IRS will reject one return. Sort out who claims whom before anyone files.
If you’re working, you’ll need to file a federal return once your gross income tops the standard deduction — $16,100 for a single filer in 2026.9Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026 Below that, filing can still be worth it to recover taxes withheld from your paychecks.
The FAFSA Problem You Should See Coming
This is where most 18-year-olds who move out get blindsided. Federal financial aid does not care that you pay your own rent. Living apart from your parents and not being claimed on their return does not make you an independent student for FAFSA purposes.
For the 2026–27 award year, you’re automatically a dependent student unless you meet a specific criterion: born before January 1, 2003, married, a veteran, have your own dependents, or were in foster care or a ward of the court at any time since age 13, among a few others.10Federal Student Aid. Dependency Status Most 18-year-old high school students don’t fit any of those, which means the FAFSA will ask for your parents’ financial information even if you haven’t spoken to them in months.
If your parents refuse to provide their information, or you genuinely can’t reach them, a college financial aid office can grant a dependency override case by case. If you’re an unaccompanied youth who is homeless or at risk of homelessness, a financial aid administrator can reclassify you as independent based on a documented interview or written statement. None of this happens automatically. You’ll have to walk into the aid office and make the case.
Do Your Parents Still Owe You Anything?
Once you reach the age of majority, your parents’ general legal obligation to support you ends. Rent, food, utilities, phone bill: yours now. No law forces a parent to help you financially just because you’re still in high school.
Court-ordered child support is the one exception. In many states, a support order from a divorce or custody case can continue past 18 while the child is enrolled in high school full-time. The specifics depend on the wording of the order and the state where it was issued, and some states cap this extended support at graduation or age 19, whichever comes first. The payments go to the custodial parent, not to you directly, so this only helps if you’re still receiving support through that parent after moving out. If no order exists, no state requires parents to keep supporting a child who has reached the age of majority, in high school or not.