Capital One 360 lets you create multiple savings accounts within one login, each with its own balance and interest rate

A sub savings account in Capital One 360 is a separate savings account you can open and manage without leaving your existing account. Each one has its own account number, balance, and interest rate. You can create up to 25 savings accounts total under one Capital One 360 login, and you can name each one — "Emergency Fund," "Vacation," "Car Down Payment" — so you know what the money is for at a glance.

The process takes about five minutes. You do not need to verify your identity again or provide new documents. Capital One does not charge a fee to open a sub account, and you can move money between your accounts when ready using the app or website.

Key Takeaways

  • You can create up to 25 savings accounts under one Capital One 360 login, each with its own name and balance.
  • Opening a sub account takes about five minutes and requires no new identity verification or fees.
  • Money transfers between your own accounts happen when ready and do not count toward any transfer limits.
  • Each sub account earns the same interest rate as your primary savings account, and the rate applies to each account's balance separately.
  • You can close a sub account at any time, and the money moves back to your primary account or another account you choose.

How to create a sub account through the Capital One 360 app

Open the Capital One 360 app and tap the menu icon (three horizontal lines) in the bottom right corner. Select "Accounts" or "My Accounts," depending on your app version. You should see your primary savings account listed.

Look for a button labeled "Add Account," "Create Account," or a plus sign (+). Tap it. Capital One will ask you to choose the account type — select "Savings Account." Enter a name for the account (up to 20 characters). This name appears only to you in your account list. Confirm the details and tap "Create." The account opens when ready and shows a zero balance.

How to create a sub account through the Capital One 360 website

Log in to your Capital One 360 account at capitalone360.com. On the dashboard, you should see your accounts listed on the left side or in a central panel. Look for a link or button that says "Add Account," "Open a New Account," or "Create Savings Account."

Click it. Select "Savings Account" from the account type options. Type a name for the account — this is for your reference only. Review the account details (interest rate, terms, fees) and confirm. The account opens right away. You can begin moving money into it when ready.

Moving money between your sub accounts

Transfers between your own Capital One 360 accounts are when ready and free. In the app, select the account you want to transfer from, then look for a "Transfer" or "Move Money" button. Choose the destination account (your other sub account or primary savings account) and enter the amount. Confirm the transfer. The money appears in the receiving account within seconds.

On the website, the process is similar: click "Transfer Money," select the "From" and "To" accounts, enter the amount, and confirm. These internal transfers do not count toward the six-transfer limit that applies to external transfers (transfers to accounts outside Capital One 360).

Interest rates and how they work across multiple accounts

Each of your sub accounts earns the same interest rate that Capital One 360 offers on savings accounts. The rate is applied to each account's balance separately, so if you have $5,000 in one sub account and $10,000 in another, interest is calculated on both balances independently.

Capital One compounds interest daily and deposits it monthly. If the interest rate changes, all your accounts are affected equally. You can see the current rate and your earned interest in the app or on the website under account details.

Naming and organizing your sub accounts

When you create a sub account, you choose a name that helps you remember what the money is for. You can change this name at any time without affecting the account itself. In the app, tap the account, look for "Account Settings" or a gear icon, and select "Rename Account." On the website, click the account name and edit it directly.

Capital One does not limit what you name an account, so you can use descriptions like "Emergency Fund," "2025 Vacation," "Medical Expenses," or anything else that makes sense to you. The name is visible only to you when you log in.

Closing a sub account and what happens to the money

You can close any sub account at any time. In the app, open the account, go to settings, and look for "Close Account" or "Delete Account." On the website, find the same option in the account settings menu. Capital One will ask you to confirm.

Before you close an account, move any balance to another account — your primary savings account or another sub account. Capital One does not automatically transfer the money. If you close an account with a balance, you will need to contact Capital One to retrieve it. Once closed, the account number is no longer active, and you cannot reopen it under the same number.

Frequently Asked Questions

Can I set up automatic transfers between my sub accounts?

Capital One 360 does not offer automatic recurring transfers between your own accounts through the standard app or website. You can set up automatic transfers from external accounts (like a checking account at another bank) into your Capital One 360 accounts, but transfers between your sub accounts must be done manually each time.

Do sub accounts have separate debit cards?

No. Capital One 360 is an online bank and does not issue debit cards for any savings accounts, including sub accounts. You can only access the money through transfers to an external account, ATM withdrawals (if you have a Capital One 360 checking account), or by requesting a check.

What happens to my sub accounts if I close my primary savings account?

If you close your primary savings account, your sub accounts remain open and active. They function independently. However, if you close your entire Capital One 360 account (all accounts), all sub accounts close as well. You would need to move any balances before closing the main account.

Can I link a sub account to an external bank account for transfers?

Yes. You can link any of your sub accounts to an external checking or savings account at another bank. This allows you to transfer money in and out of that specific sub account. The linking process is the same as linking your primary Capital One 360 account — you provide the external account number and routing number, and Capital One verifies it with two small deposits.

Is there a limit to how much I can keep in a sub account?

Capital One 360 does not publish a maximum balance limit for individual accounts. However, balances over $250,000 are not covered by FDIC insurance at a single institution. If you have more than $250,000 total across all your Capital One 360 accounts, consider spreading the excess to another FDIC-insured bank to maintain full coverage.