Joint Bank Account: What Is It and How Does It Work?

Key insights:

• A joint bank account allows 2 or more people to share ownership of an account, with each owner having full access to deposit, withdraw and transfer funds
• All joint account owners share equal responsibility for the account's activity, including overdrafts — even if they didn’t initiate or benefit from a transaction
• Joint checking accounts can simplify shared finances for couples and families, but require a high level of trust between all account holders

Opening a joint bank account is a common next step that many couples take after getting married. According to a recent U.S. Census survey, 77% of married households with assets in financial institutions held at least 1 joint account with their spouse. Merging funds for shared expenses, from rent to utilities to groceries, can help simplify day-to-day money management.

But joint accounts aren’t just for couples. Parents, family members and business partners can use them too. Whatever your reason for opening a joint account, understanding how they work, including the responsibilities that come with shared ownership, is key.

Let’s look into how joint bank accounts work and what to consider before opening one.

What is a joint bank account?

A joint bank account is a bank account held in co-ownership. These accounts work the same way as individual bank accounts, with 1 important difference: Any joint account owner can access it, perform transactions and monitor activity without the other owner’s permission.

You can open many types of bank accounts as joint accounts, including checking and savings accounts.

How does a joint bank account work?

Any joint owner can use the account however they choose. That means they may deposit, withdraw and transfer funds at will. It also means each joint owner is individually responsible for all activity on the account — even if they didn’t participate in or benefit from the transactions.

Your bank can act on the instruction of any of the joint account owners at any time. However, if there are conflicting instructions or a dispute among the account owners, your bank may require all joint owners to act together when giving instructions or performing transactions.

Each account owner is also jointly responsible for all account activity, including overdrafts created by any authorized signer or party to the account, regardless of whether they participated in the transaction.

Who pays taxes on a joint account?

Generally, banks report interest received by account owners to the IRS for the year it was received, as required by applicable law.

When you open a joint bank account, your bank may ask you to identify a primary, first-titled holder. If tax reporting is required, the bank will issue an information return to the first-titled account owner. You should contact your bank directly for specific tax information related to your account.

What are the benefits of a joint bank account?

Shared ownership of a bank account comes with several practical advantages, including:

• Tracks shared expenses: Account owners can monitor and manage household or shared costs in 1 place
• Encourages transparency: Both owners see all account activity, helping promote financial openness
• Merges income for shared goals: Helps to save together for big purchases like a home down payment or car
• Simplifies bill payments: No more splitting or reimbursing each other for recurring expenses

What are the drawbacks of a joint bank account?

Joint accounts may not be the right fit for everyone. Here are some potential downsides to keep in mind:

• Shared liability: Every owner is responsible for all account activity, including overdrafts they didn’t cause
• Less financial privacy: All owners have full visibility into the account’s transactions, which may feel uncomfortable for some
• Potential for conflict: Disagreements over spending habits or financial priorities could create tension between account owners
• Complications when relationships change: If the relationship between account holders deteriorates, deciding how to split the money or whether to close the account can become complicated

How to open a joint bank account

Opening a joint checking account follows a similar process to opening an individual bank account. Here’s what to expect:

1. Gather all necessary documentation

Each applicant should provide a government-issued ID, proof of residence and their tax identification (often a Social Security number). This information is required from every person applying to be an owner of the joint account.

2. Choose your bank

Whether you’re applying with a bank you already use or a new one, it’s worth comparing account options first. Consider the fees, balance requirements and features — like mobile check deposit or online bill pay — that matter most to you.

3. Apply for the account

Most banks allow you to apply online, by phone or in person. Be sure to contact the bank to confirm any specific steps or requirements they have for joint accounts, as the process may vary.

4. Make an opening deposit

Depositing funds into the account establishes it as active. Take time to understand the account’s fee structure and any minimum balance requirements to avoid potential fees.

5. Set up account access for all owners

Once the account is open, make sure all joint owners have the access they need — including debit cards, online banking credentials and mobile app setup.

At Citi, you can set up access for the second owner in person at a local branch or over the phone via Customer Service.

How to close a joint bank account

Any joint account owner may close a joint account. To do so, first stop all deposits, withdrawals and transfers into the account. Next, you’ll need to withdraw all remaining funds (ideally into another active account). Lastly, you should request that your bank close the account, following their specific process.

Since the steps for closing a joint account may vary by bank, check with your institution to ensure you’re following the correct procedure.

Who should consider opening a joint bank account?

Before opening a joint bank account, you should have an established, trusting relationship with whomever you’re sharing it with. Some groups who may benefit include:

• Married couples or domestic partners: Joint accounts may help couples manage shared expenses and work toward financial goals together
• Parents and teenagers: A joint checking account can be a useful tool for teaching younger family members how to manage money, while parents retain visibility into account activity

What should you look for in a joint bank account?

Since joint bank accounts function similarly to individual accounts, the right choice depends on your specific financial goals.

For example, if your primary goal is saving, look for accounts with interest rates that align with your expectations. If you plan to use the joint account for everyday purchases and shared expenses, consider an account with strong digital and mobile features — like mobile check deposit, online bill pay and real-time account alerts — to make managing the account easier for all owners.

Make the most of your joint bank account with Citi

A joint bank account can help simplify how you manage shared finances, whether you’re splitting household bills, saving toward a shared goal or teaching a teenager smart money habits.

Understanding how joint accounts work, including the shared responsibility that comes with them, helps you make a more informed decision about whether a joint account is right for your situation.

When you’re ready to take the next step, explore Citi^® Checking Accounts to see how they can support your banking needs.

Joint bank account FAQs

What are the rules for a joint bank account?

Each owner of a joint bank account has equal access to the account and may deposit, withdraw and transfer funds independently. Every owner is also equally responsible for all account activity, including overdrafts, regardless of who initiated the transaction. In the event of a dispute between account owners, the bank may require all parties to act together before executing any transactions.

Can I open a joint bank account without my spouse being present?

This depends on the bank. Citi requires both applicants to be present — either in person or via phone verification — when opening a joint account, since each person must provide identification and agree to the account terms. Contact your bank directly to confirm their specific requirements.

Does a joint bank account automatically go to the surviving joint-owner spouse?

In many cases, yes. Joint bank accounts are often set up with “right of survivorship,” meaning the surviving account owner automatically assumes full ownership of the account upon the other owner's death. That said, account terms may vary by institution and by state law, so it’s worth confirming the terms of your specific account.

Can I open a joint bank account online?

Many banks, including Citi, offer the option to open a checking account online. The process typically requires each applicant to provide personal identification information and agree to the account's terms and conditions. With Citi Accounts, you can opt for a joint account during the online application.

Disclosure: This article is for general educational purposes. It is not intended to provide financial advice. It also is not intended to completely describe any Citi product or service. You should refer to the terms and conditions financial institutions provide for various products