You cannot open a bank account in your sibling's name without their permission and presence
Banks require the account holder to be present in person or to sign documents electronically themselves. You cannot walk into a branch, provide your sibling's information, and open an account they do not know about. If your sibling is an adult, they must consent to the account and typically must verify their identity directly to the bank—either by showing up or by completing an online identity verification process.
If your sibling is a minor, the rules are different. A parent or legal guardian can open a custodial account on their behalf. If you are not the parent or guardian, you have no legal standing to open an account for them, even if you want to help them save money or manage funds.
The reason banks enforce this is fraud prevention. Opening accounts without the owner's knowledge is a common identity theft tactic. Banks verify identity to protect both the account holder and themselves.
Key Takeaways
- An adult sibling must consent to and participate in opening their own account; you cannot do it for them.
- A minor's parent or legal guardian can open a custodial account, but you cannot unless you hold guardianship.
- If you want to help a sibling manage money, a joint account or authorized user arrangement requires their presence and signature.
- Banks verify identity directly with the account holder to prevent fraud, so proxy account opening is not an option.
- If your sibling cannot visit a branch, many banks offer remote account opening through video verification or digital signing.
What you can do if your adult sibling wants your help
If your sibling wants a bank account but needs help, several options exist that require their participation. The simplest is to go to the bank together. Your sibling can bring a government-issued ID, proof of address (a utility bill or lease), and their Social Security number. You can sit with them, help them understand the options, and support them through the process. Most banks complete account opening in 15 to 30 minutes.
If your sibling cannot visit a branch in person, many banks now offer remote account opening. Your sibling can start the process online or by phone, complete identity verification through video call or by uploading photos of their ID, and sign documents electronically. Chase, Bank of America, Wells Fargo, and most credit unions offer this option. The process usually takes 24 to 48 hours.
If you want to manage the account together, you can open a joint account. Both of you must be present and sign the account agreement. You will both have equal access to the money and equal responsibility for overdrafts or fees. A joint account is useful if you are pooling money for a shared goal or if one of you is helping the other manage finances temporarily.
Alternatively, you can be added as an authorized user on your sibling's account. Your sibling opens the account in their name, then asks the bank to add you. You can deposit and withdraw money, but your sibling remains the account owner and is responsible for any fees or overdrafts. This arrangement gives you access without shared ownership.
Opening a custodial account for a minor sibling
If your sibling is under 18 and you are their parent or legal guardian, you can open a custodial savings account or custodial checking account in their name. You control the account until they reach the age of majority (18 or 21, depending on your state and the bank). The account teaches them about saving and banking while you manage it.
To open a custodial account, bring your ID, proof of address, and your minor sibling's birth certificate or Social Security number. Some banks also require the minor to be present. The account is held in trust for them, and any interest earned is taxed at their rate, not yours—which is usually lower.
If you are not the parent or guardian—for example, you are an older sibling or aunt—you cannot open a custodial account. Only a parent, legal guardian, or court-appointed conservator has the authority to do so. If your sibling's parents are unable or unwilling to open an account, you would need to pursue guardianship through the court, which is a lengthy legal process and not practical for the purpose of a bank account.
What happens if you try to open an account without their knowledge
If you attempt to open an account using your sibling's name and information without their consent, the bank will likely reject the application during identity verification. Banks now use third-party verification services that cross-check the information you provide against government records and credit bureaus. If the person opening the account is not the person whose name is on it, the verification fails.
If you somehow succeed in opening an account fraudulently, your sibling can report it to the bank and have it closed. They can also file a fraud report with the Federal Trade Commission (FTC) and place a fraud alert on their credit report. If money is involved, they can pursue civil or criminal charges against you.
Banks also report suspicious account openings to the Financial Crimes Enforcement Network (FinCEN). Attempting to open accounts in someone else's name without consent is identity theft, regardless of your relationship to them or your intentions.
Remote account opening if your sibling lives far away
Distance is not a barrier. If your sibling lives in another state or country, they can still open a U.S. bank account remotely. Most major banks and online banks (Ally, Charles Schwab, Discover, Chime) allow account opening entirely online. Your sibling will need to upload a photo of their ID, verify their identity through a video call or by answering security questions, and sign documents electronically.
The process typically takes 24 to 48 hours. Your sibling receives a debit card by mail within 7 to 10 business days. Some online banks offer faster card delivery or temporary digital card access while the physical card is in transit.
If your sibling is outside the United States, options are more limited. Most U.S. banks require a U.S. address and Social Security number or Individual Taxpayer Identification Number (ITIN). Some online banks and fintech companies serve international customers, but they have stricter verification requirements and may charge higher fees. Your sibling should research banks that serve their country of residence.
If your sibling has no ID or Social Security number
A Social Security number is standard but not always required. If your sibling is undocumented or has never applied for a number, some banks will open an account using an ITIN (Individual Taxpayer Identification Number) or a passport from another country. However, options are limited, and verification takes longer.
If your sibling has no government-issued ID, they may be able to use a passport, tribal ID, or military ID. Some banks accept alternative documents like a school ID plus a utility bill. Call ahead to ask what your sibling's bank accepts before they visit.
If your sibling has a criminal record or is on a fraud watch list, some banks may deny the account. This is rare, but it happens. If an account is denied, your sibling can ask the bank for the reason and try another bank—different institutions have different policies.
Frequently Asked Questions
Can I add my sibling to my existing bank account?
Yes, if they consent. Contact your bank and ask to add them as a joint account holder or authorized user. They will need to provide identification and sign paperwork. A joint account gives them equal access and equal responsibility; an authorized user can access funds but you remain the primary owner.
What if my sibling is in prison or unable to sign documents?
If your sibling is incarcerated, they can still open an account by mail or through a video call with the bank. If they are physically unable to sign (due to disability), they can sign with a mark or thumbprint, or authorize someone with power of attorney to sign on their behalf. Contact the bank to ask what documentation they need.
Do I need my sibling's permission to add them as a beneficiary on my account?
No. A beneficiary is someone who receives money from your account after you die. You can name anyone as a beneficiary without their knowledge or consent. However, if you want them to access your account while you are alive, they must consent and be added as a joint holder or authorized user.
Can my sibling open a bank account if they have bad credit?
Yes. Banks do not check credit scores for savings or checking accounts. They may check ChexSystems (a banking history report) to see if your sibling has had accounts closed due to fraud or unpaid fees. If there is a problem, some banks specialize in second-chance accounts. Your sibling should ask the bank directly.
What if my sibling is a minor and their parents refuse to open an account?
You cannot override the parents' decision. If the minor is in danger or being neglected, contact child protective services. Otherwise, the minor will have to wait until they turn 18 and can open an account on their own. At that point, they can walk into any bank with an ID and Social Security number.