The minimum age to open a bank account depends on the type of account and whether a parent or guardian co-signs
Most banks will not open an account in a minor's name alone. A child under 18 needs a parent or guardian to open a custodial account — an account the adult controls on the child's behalf until they reach the age of majority, usually 18 or 21 depending on your state. Some banks allow this as early as birth; others set a minimum age of 13 or 14.
Once you turn 18, you can open a standard checking or savings account without a parent's involvement in most states. A few states treat 18-year-olds as minors for banking purposes until age 21, but this is uncommon. The bank will ask for a government-issued ID — a driver's license, state ID, or passport — and proof of address, usually a utility bill or lease.
If you are under 18 and want an account in your name alone, some banks and credit unions offer teen accounts starting at age 13 or 16. These accounts have restrictions: limited ATM withdrawals, no overdraft, parental monitoring. The rules vary by institution, so you will need to call or visit a branch to find out what your bank offers.
Key Takeaways
- Children under 18 can have a custodial account opened by a parent or guardian, with the adult holding legal control until the child reaches adulthood.
- At age 18, you can open a standard bank account on your own in most states without parental permission or co-signature.
- Teen accounts for ages 13 to 17 exist at some banks and credit unions but come with withdrawal limits and parental access to the account.
- You will need a government-issued ID and proof of address to open an account at 18; younger children need only a parent and their Social Security number.
How custodial accounts work before age 18
A custodial account is a legal arrangement where a parent or guardian holds the account and makes all decisions about deposits, withdrawals, and how the money is used. The child's name is on the account, and the account is held in trust for them, but the adult has full control. This protects the bank from liability and ensures the account is managed responsibly.
The parent provides their ID and Social Security number, plus the child's Social Security number. Some banks ask for the child's birth certificate as well. There is no minimum age at some institutions; others require the child to be at least a few days old. The account can be a checking account, savings account, or both.
When the child turns 18 or 21 (depending on state law and the bank's policy), the custodial account automatically converts to a standard account in the child's name. The parent's authority ends, and the young adult can manage the account independently. Some banks notify you of this transition; others do not, so it is worth asking when you open the account what the conversion process looks like.
Teen accounts: what they are and what limits explore
A teen account is designed for minors who want some independence without full adult control. These accounts typically allow the teen to make deposits and withdrawals, but with guardrails. Common restrictions include a daily ATM withdrawal limit (often $100 to $500), no overdraft protection, and no ability to open additional accounts or take out loans.
The parent or guardian still has access to the account and can see all transactions. Some banks allow the parent to set spending limits or receive alerts when the teen makes a withdrawal. The teen usually gets a debit card, though some banks restrict online purchases or international transactions.
Teen accounts are not available at every bank. Chase, Bank of America, Wells Fargo, and many credit unions offer them, but the features and age requirements differ. Chase allows accounts from age 13; some credit unions start at 16. Call your bank or visit their website to see if they have a teen product and what the rules are.
What happens when you turn 18
At 18, you have the legal right to open a bank account without a parent's involvement. You do not need permission, and you do not need a co-signer. If you already have a custodial account, it will convert to a standard account in your name. If you have a teen account, you can keep it or close it and open a different account elsewhere.
To open an account at 18, bring a government-issued ID (driver's license, state ID, or passport) and proof of address. A utility bill, lease, or recent bank statement works for address verification. You will also provide your Social Security number. The process takes 15 to 30 minutes in a branch or can be done online at most banks.
Once the account is open, you have full control. You can deposit and withdraw money, set up automatic transfers, explore for a debit card, and later open a credit card or take out a loan if you meet the bank's requirements. The parent or guardian has no access unless you explicitly add them as an authorized user.
State-by-state differences in age of majority
Most states consider 18 the age of majority for banking and financial decisions. However, a few states treat people differently until age 21. Alabama, Mississippi, and Nebraska set the age of majority at 19. The District of Columbia sets it at 21. These differences matter because they determine when a custodial account automatically converts and when you can legally manage your own finances without parental consent.
If you live in one of these states, ask your bank when your custodial account will convert. Some banks follow state law strictly; others use 18 as the cutoff regardless of state rules. Getting this in writing prevents confusion later.
Documents you need at each age
| Age | Account Type | Documents Needed |
|---|---|---|
| Birth to 17 | Custodial account | Parent/guardian ID, parent/guardian Social Security number, child's Social Security number, sometimes child's birth certificate |
| 13 to 17 | Teen account (if offered) | Parent/guardian ID, child's Social Security number, sometimes child's ID |
| 18+ | Standard account | Government-issued ID (driver's license, state ID, or passport), proof of address (utility bill, lease, or bank statement), Social Security number |
Frequently Asked Questions
Can a 16-year-old open a bank account without a parent?
Not at most banks. Standard accounts require you to be 18. Some banks and credit unions offer teen accounts at 16 with parental involvement, but the parent still has access and control. A few online banks may have different rules, so it is worth calling ahead to ask.
What if my parent wants to remove themselves from my account after I turn 18?
Once your custodial account converts to a standard account at 18 (or your state's age of majority), the parent has no legal claim to it and cannot access it unless you add them as an authorized user. If a parent is listed on a teen account, they can usually be removed by visiting a branch or calling the bank.
Do I need a Social Security number to open a bank account?
Yes. Banks are required by federal law to collect a Social Security number or Individual Taxpayer Identification Number (ITIN) for all account holders. If you do not have a Social Security number yet, you will need to explore for one before opening an account.
Can I open an account online if I am under 18?
Most online banks do not allow minors to open accounts without a parent. Some require you to be 18 to use their platform. A few online banks partner with custodial account providers, but this is rare. Your best option is a traditional bank or credit union branch, where staff can walk through the process with a parent present.
What is the difference between a custodial account and a teen account?
A custodial account is fully controlled by the parent until the child reaches adulthood. A teen account gives the teen some independence — they can make withdrawals and use a debit card — but with limits and parental monitoring. Teen accounts are only available at some banks and usually start at age 13 or 16.