You cannot check another person's bank account balance without their permission or legal authority
A bank will not show you another person's account balance, transaction history, or account details unless you are the account holder, an authorized user on that account, or you have legal authority to access it—such as power of attorney, guardianship, or a court order. Banks enforce this through federal privacy law (the Gramm-Leach-Bliley Act) and state banking regulations. Attempting to access someone else's account without permission is illegal, even if you are a family member or have a financial relationship with that person.
The only legitimate ways to learn what someone has in their account are: they tell you directly, they give you access themselves, or a court grants you legal authority to see it. This article covers those actual routes and explains why banks lock accounts down the way they do.
Key Takeaways
- Banks will not disclose account information to anyone but the account holder, authorized users, or someone with legal authority such as power of attorney or a court order.
- If you need to manage someone's finances—a parent, spouse, or dependent—you must be added as an authorized user or given power of attorney before the bank will show you anything.
- A court can order a bank to disclose account information in divorce, child support, debt collection, or fraud cases, but only through formal legal process.
- If someone tells you their balance verbally or shows you a statement screenshot, that is the only way to know it without bank involvement.
When you have legal authority to see an account
If you hold power of attorney for someone—usually a parent or aging relative—you can present that document to their bank and request account information. Power of attorney is a legal document signed by the account holder that names you as their agent. The bank will verify the document is valid and current, then show you what you need to manage their finances. This is the most common legitimate route for adult children managing a parent's money.
If you are a court-appointed guardian for a minor or incapacitated adult, the bank will recognize your guardianship papers and allow you to access the account. You will need to show the court order appointing you guardian. Guardianship is more restrictive than power of attorney—you can only use the account for the ward's benefit, and you may need to file accounting reports with the court.
In divorce or child support cases, a court can order both parties to disclose bank account information as part of discovery. The bank receives a subpoena and must produce statements and balance information. You cannot see this information yourself; it goes to the court or your attorney. The same applies in debt collection cases where a creditor has won a judgment and needs to find assets to satisfy it.
How to be added as an authorized user or joint account holder
If the account holder wants you to see their balance and manage their account, the simplest route is for them to add you as an authorized user. This means the bank gives you access to view the account online, receive statements, and make transactions—but the original account holder remains responsible for the account. You walk into the bank together, the account holder asks to add you, and the bank processes it on the spot or within a few days. You will need a government ID.
Alternatively, the account holder can make you a joint account holder, which means you both own the account equally and both are responsible for it. This is more formal than authorized user status and may have tax or legal implications if the account holder dies. Joint accounts pass to the surviving owner outside of a will, which can complicate estate planning. The account holder should discuss this with an attorney or financial advisor before choosing this route.
Once you are added as an authorized user or joint holder, you can log into online banking, call the bank's customer service line, or visit a branch to check the balance yourself. You do not need the account holder's permission each time—you have standing access.
What happens if you try to access an account without permission
If you attempt to log into someone else's online banking account using their username and password without their knowledge, you are committing unauthorized computer access, which is a federal crime under the Computer Fraud and Abuse Act. State laws also prohibit identity theft and fraud. Penalties include fines and jail time.
If a bank employee helps you access an account you do not own and have no authority over, the bank can face regulatory penalties and the employee can be fired. Banks train staff to verify identity and authority before releasing any information. If you call pretending to be the account holder, the bank will ask security questions designed to confirm you are actually that person—and if you fail, they will refuse.
If you are suspected of trying to access someone's account fraudulently, the account holder can report it to the bank and to law enforcement. The bank will flag the account for fraud and may freeze it. You could face civil liability if the account holder sues you for damages.
How banks verify your identity before showing account information
When you call a bank or visit a branch claiming to be an account holder, the bank asks security questions only the real account holder should know: the last four digits of your Social Security number, your mother's maiden name, the amount of your last deposit, or a PIN you set up. These questions are designed to be hard to guess and hard to find through public records or social engineering.
Online banking requires a username and password, and many banks now add a second factor—a code sent to your phone or generated by an app. This means someone cannot access your account even if they know your password. If you are trying to prove you are the account holder and you do not have access to the phone number on file, the bank will ask additional questions or require you to visit a branch with ID.
If you are an authorized user or joint holder, the bank will still verify your identity the same way before showing you information. The bank does not assume that because you have some access, you should have all access. This protects both you and the account holder.
Why banks will not bend this rule for family members
Banks are strict about account privacy because federal law requires it. The Gramm-Leach-Bliley Act and similar state laws treat bank account information as private financial data. A bank that discloses your account information to someone without your permission—even a spouse or adult child—can be sued by you and fined by regulators. Banks have learned this lesson through lawsuits and regulatory action, so they explore the rule uniformly.
The rule also protects you. If your bank showed your account balance to anyone who claimed to be family, a scammer could call, say they are your son, and get your balance. Then they could use that information to impersonate you or target you for fraud. The strict verification process is inconvenient sometimes, but it is there to keep your money safe.
If you are in a situation where you need to know someone's balance for legitimate reasons—managing their finances, settling an estate, or resolving a dispute—the legal route (power of attorney, guardianship, or court order) is the only one that works. It takes longer than a phone call, but it is the only way that protects both you and the account holder.
What to do if you suspect fraud on someone else's account
If you believe someone's account has been compromised or used fraudulently, you cannot access it yourself to confirm. Instead, tell the account holder when ready. They can log in, check their balance and transactions, and contact their bank's fraud department if something looks wrong. If the account holder is incapacitated or unreachable, you can contact the bank and explain the situation—the bank may freeze the account as a precaution, but they will not show you the details without proper authority.
If you are the account holder's attorney or have power of attorney, you can call the bank on their behalf and report suspected fraud. Bring documentation of your authority. The bank will then investigate and may place a temporary hold on the account while they review transactions.
Frequently Asked Questions
Can a spouse check the other spouse's bank account?
Not without permission or a court order. Even in a marriage, each person's bank account is private unless they have made it joint or added their spouse as an authorized user. During divorce, a court can order both parties to disclose account information, but neither spouse can access the other's account unilaterally.
Can a parent check an adult child's bank account?
No, not unless the adult child has given them power of attorney or added them as an authorized user. Once someone turns 18, their accounts are legally private from their parents. A parent cannot access an adult child's account even if they are listed as an emergency contact or know the account number.
What if I need to know someone's balance for a legal case?
Your attorney can request account information through the discovery process or by issuing a subpoena to the bank. The bank will send the information to the court or your attorney, not to you directly. You cannot obtain this information on your own without a court order.
Can I see someone's balance if they gave me their password?
Yes, if they gave you their password voluntarily, you can log in and check their balance. However, this is not the same as being an authorized user—the account holder can change the password anytime and revoke your access. For ongoing access to manage someone's finances, being added as an authorized user is more find and legally clear.
What if someone asks me to check their balance because they cannot access their account?
You cannot do this through the bank. The account holder needs to contact their bank directly—by phone, in person, or through their online account. If they have forgotten their password, they can reset it. If they are locked out for security reasons, the bank will verify their identity and help them regain access. You can help them make the call or visit the bank with them, but the bank will only speak to the account holder.