You cannot open a bank account in your sibling's name without their permission and presence
A bank will not let you open an account that belongs to someone else, even a family member. The person whose name goes on the account must be present at the bank, or in some cases complete the process online themselves. This is a legal requirement called Know Your Customer (KYC) compliance — banks must verify the identity of the account holder themselves.
If your sibling is an adult, they have to do the opening themselves or explicitly authorize you to act on their behalf. If your sibling is a minor, a parent or legal guardian can open an account with them, but not without them. The bank will ask for identification from the person whose name is on the account, and they will verify it matches the person in front of them or logging in online.
What you can do is help your sibling through the process, gather documents they need, or recommend a bank. What you cannot do is complete it for them or forge their signature.
Key Takeaways
- Your sibling must be present or complete the account opening themselves — banks will not open an account for someone who is not there to verify their identity.
- If your sibling is a minor, a parent or legal guardian opens the account with them present, not you alone.
- You can be added as an authorized user or joint account holder only if your sibling agrees and signs the paperwork.
- If your sibling is incapacitated or unreachable, you would need legal power of attorney or guardianship to act on their behalf.
What happens if your sibling is a minor
A parent or legal guardian must open the account with the minor present. The bank will ask for the parent's or guardian's identification and the minor's identification (usually a birth certificate or school ID). The account will be in the minor's name, but the parent or guardian has control over it until the minor reaches the age of majority — usually 18, though this varies by state and by bank.
You cannot open this account yourself unless you are the legal parent or guardian. If you are an older sibling and your parents are unavailable, you would need to ask a parent to do it, or wait until your sibling is old enough to open their own account.
Adding yourself as an authorized user or joint account holder
If your sibling already has an account and wants to add you, they can do this at the bank. You will both need to be present, and your sibling will sign a form authorizing you. The bank will take your identification and verify it. Your sibling remains the primary account holder, and you become an authorized user or joint account holder depending on what they choose.
The difference matters: an authorized user can use the account but the primary holder controls it and can remove you. A joint account holder has equal legal rights to the account, can withdraw all the money, and can close it. Your sibling should understand this difference before adding you.
If your sibling cannot go to the bank in person
Many banks now let account holders open accounts online without visiting a branch. If your sibling is out of state, traveling, or homebound, they can often complete the entire process on their phone or computer. They will upload a photo of their ID, answer security questions, and sign electronically. You do not need to be involved in this process — your sibling does it themselves.
If your sibling is unable to use a computer or phone due to age or disability, a parent or legal guardian can help them through the process, but the account still opens in your sibling's name with their consent. If your sibling is unconscious, in a coma, or otherwise unable to consent, you cannot open an account for them without a court order granting you power of attorney or guardianship.
When you need legal power of attorney or guardianship
If your sibling is incapacitated — meaning they cannot make their own decisions due to illness, injury, or cognitive decline — you can petition a court for power of attorney or guardianship. This is a legal process that varies by state. With power of attorney, your sibling appoints you to act on their behalf (they can do this while still able to make decisions). With guardianship, a court appoints you because your sibling cannot make decisions.
Once you have either of these, you can open a bank account on your sibling's behalf. You will bring the power of attorney document or guardianship order to the bank, along with your sibling's identification and yours. The account will still be in your sibling's name, but you will have the legal right to manage it.
This process takes weeks or months and usually costs money in court fees. It is not something to pursue unless your sibling truly cannot manage their own finances.
Documents you will need depending on the situation
| Situation | Who Opens the Account | Documents Needed |
|---|---|---|
| Your sibling is an adult | Your sibling | Their government ID, proof of address (utility bill or lease), Social Security number |
| Your sibling is a minor | Parent or legal guardian with minor present | Parent's government ID, minor's birth certificate or school ID, proof of address |
| You are adding yourself to an existing account | Your sibling (primary holder) and you | Both of your government IDs, both of your Social Security numbers |
| You have power of attorney for your sibling | You, on their behalf | Power of attorney document, your government ID, your sibling's government ID, their Social Security number |
| You are the legal guardian of your sibling | You, with your sibling present | Guardianship order, your government ID, your sibling's government ID or birth certificate |
What banks will and will not accept
Banks will not accept a handwritten note from your sibling saying you can open an account for them. They will not accept a text message or email. They will not accept a power of attorney document that is not notarized or that does not specifically grant you the power to open bank accounts. They will not accept a birth certificate as proof of identity for an adult.
Banks will accept government-issued photo ID (driver's license, passport, state ID card), proof of address dated within the last 60 days, and a Social Security number or Individual Taxpayer Identification Number. They will accept a notarized power of attorney or a court-issued guardianship order. Requirements vary slightly by bank and by state, so call ahead or check the bank's website before you go.
Frequently Asked Questions
Can I open a bank account for my sibling if they are in another country?
Not without their direct involvement. Your sibling would need to complete the account opening themselves, either online or by visiting a branch of that bank in their country. Some U.S. banks have international branches or partnerships that allow this. Your sibling should contact the bank directly to ask what options exist for their location.
What if my sibling is in jail or prison?
Your sibling can still open an account themselves if the facility allows phone or computer access, or they can authorize you in writing to open one on their behalf. You would bring a signed letter from your sibling along with their identification and yours to the bank. Call the bank first to confirm they will accept this arrangement.
Can I open a savings account for my sibling as a gift?
No. Even if you intend it as a gift, the account must be in your sibling's name and they must consent to it. You could open a savings account in your own name and give them the money, but that account would belong to you, not them. If you want to give them money for a savings account, help them open one themselves.
What happens if I forge my sibling's signature on a bank account process?
This is fraud and is a crime. The bank will discover the forgery during verification, and you could face criminal charges. Banks verify identity carefully specifically to prevent this. Do not attempt it.
Can I open a joint account with my sibling without them being present?
No. Both account holders must be present or complete the process online themselves. The bank will verify both of your identities. You cannot create a joint account unilaterally.