What a sub savings account is and why you might want one

A sub savings account in Capital One 360 is a second savings account you create within the same login. Think of it as a separate bucket for money inside your main account — the funds sit in the same place, but you can label it, name it, and track it separately. You might use one sub account for an emergency fund, another for a vacation, and another for a car repair, all without opening new accounts or managing multiple logins.

Capital One 360 lets you create up to 25 sub savings accounts. Each one earns the same interest rate as your main savings account, and money moves between them when ready. You do not pay fees to create or maintain them.

Key Takeaways

  • You create a sub savings account by logging into Capital One 360 online or through the mobile app and selecting the option to add a new savings account.
  • Each sub account has its own name and balance, but all accounts share the same interest rate and are protected by the same FDIC insurance.
  • You can move money between your main account and any sub account when ready with no fees.
  • Transfers between sub accounts and external banks follow the same rules as transfers from your main account — they take one to three business days.

Setting up a sub account on the Capital One 360 website

Log into your Capital One 360 account on the website. On the left side of the screen, you will see your account summary. Look for a button or link that says "Add a Savings Account" or "Create New Account" — the exact wording changes occasionally, but it appears near your list of existing accounts.

Click that button. You will be asked to name the account. Choose a name that tells you what the money is for — "Emergency Fund," "Car Repair," "Vacation 2025," or anything else that makes sense to you. This name appears only in your account, so use whatever is clearest to you. You do not need to enter a starting balance; you can transfer money in after the account is created.

Click "Create" or "Confirm." The account opens when ready. You will see it listed alongside your other accounts, and you can start moving money into it right away.

Setting up a sub account on the Capital One 360 mobile app

Open the Capital One 360 app and log in. Tap the menu icon (usually three horizontal lines) in the top left or bottom right, depending on whether you use iPhone or Android. Look for an option labeled "Accounts," "My Accounts," or "Account Settings."

Tap "Add Account" or "Create New Savings Account." You will see a text field where you enter the account name. Type in a name that describes what you are saving for. Tap "Create" or "Confirm," and the account appears in your account list when ready.

Moving money into and out of a sub account

Once the sub account exists, you can move money between it and your main Capital One 360 savings account when ready. Log in, select the account you want to transfer from, and look for a "Transfer" button or option. Choose the sub account as your destination, enter the amount, and confirm. The money appears in the other account within seconds.

If you want to move money from a sub account to a bank account outside Capital One 360, the transfer follows the same timeline as any external transfer — usually one to three business days. The sub account works exactly like your main account for external transfers; Capital One 360 does not treat them differently.

Interest, insurance, and account limits

Every sub account earns interest at the same rate as your main Capital One 360 savings account. The rate changes when Capital One 360 changes it, and all your accounts move together. You do not earn more or less interest by splitting your money across multiple sub accounts.

All your Capital One 360 accounts — your main account and every sub account — are covered by FDIC insurance up to $250,000 per account. This means if Capital One 360 fails, the government protects your money up to that limit in each account. If you have $100,000 in your main account and $100,000 in a sub account, both are fully protected.

You can create up to 25 sub accounts. There is no fee for creating them, and you do not pay monthly maintenance charges. You can delete a sub account at any time, but you must move the money out first — Capital One 360 will not let you delete an account that holds a balance.

Renaming or deleting a sub account

To rename a sub account, log in and find the account in your list. Look for a settings icon (usually a gear or three dots) next to the account name. Tap or click it, select "Rename" or "Edit," and type the new name. Save the change, and the new name appears when ready.

To delete a sub account, transfer all the money out first. Once the balance is zero, go back to the account settings and select "Delete" or "Close Account." The account disappears from your list. You cannot delete an account that still holds money.

Common reasons to use sub accounts

People use sub accounts for different goals. Some create one for an emergency fund and keep it separate from everyday spending money, so they are less tempted to dip into it. Others create one for each major expense they are saving toward — a wedding, a down payment, a home repair — and watch each one grow separately. Parents sometimes create sub accounts for each child to track money set aside for their education or future.

The main benefit is psychological: seeing money labeled and separated makes it easier to stick to your savings goals. You get the same interest rate and the same safety whether you use one account or ten, but the structure helps you think clearly about what the money is for.

Frequently Asked Questions

Do I need a separate login for each sub account?

No. All your sub accounts appear in the same login. You see them all listed together when you log in, and you can switch between them without logging out.

Can I set up automatic transfers into a sub account?

Yes. You can set up recurring transfers from your main account or from an external bank account into any sub account, just as you would with your main account. The frequency and amount are up to you.

What happens to a sub account if I close my Capital One 360 account?

All sub accounts close when you close your main account. You must move the money out of all sub accounts before you can close your main account.

Can someone else access my sub accounts?

Only if they have access to your Capital One 360 login. Sub accounts do not have separate usernames or passwords — they are part of your main account. If you share your login with someone, they can see and move money in all your sub accounts.

Does Capital One 360 charge fees for sub accounts?

No. There are no fees to create, maintain, or close a sub account. Capital One 360 does not charge monthly maintenance fees on any savings account, including sub accounts.