The basic steps to connect a savings account
To add a savings account to the Capital One app, open the app, tap the menu icon (three horizontal lines), select "Accounts," then tap "Add Account" or the plus sign. Choose "Savings Account," enter your account number and routing number, and follow the prompts to verify the account. The verification usually takes one to two business days, during which Capital One sends small test deposits to confirm you own the account.
The account you're adding must be in your name. If it's held at another bank, you'll need the routing number (a nine-digit code that identifies your bank) and your full account number. If it's another Capital One savings account, the app may recognize it automatically and skip the manual entry step.
Once verified, the account appears in your app's account list and you can view balances, transfer money between accounts, and set up alerts. The process is the same whether you're adding a Capital One savings account or one from a different bank.
Key Takeaways
- You need your account number and routing number to add a savings account manually; the app may auto-detect other Capital One accounts.
- Capital One verifies new accounts by sending two small test deposits, which takes one to two business days.
- You must own the account in your own name; you cannot add accounts held by someone else.
- Once verified, you can transfer money between the new account and your other linked accounts within the app.
Where to find your account and routing numbers
Your account number appears on the bottom left of any check from that account, printed as the second set of numbers after the routing number. If you don't have a checkbook, log into your bank's website or app and look for account details or account settings—the account number is usually displayed there in full.
Your routing number is the first set of numbers on a check, or you can find it on your bank's website under "routing number," "bank routing number," or "ABA number." Many banks also list it in their mobile app under account information. If you cannot find it, call your bank's customer service line and provide your account number; they will give you the routing number when ready.
Capital One's routing number is 051000017 if you're adding another Capital One account and the app does not auto-detect it. For accounts at other banks, use that bank's routing number, not Capital One's.
What happens during the verification process
After you enter your account number and routing number, Capital One deposits two small amounts—usually between $0.01 and $0.99 each—into the account you're adding. These deposits appear in that account within one to two business days. You then return to the Capital One app and enter the exact amounts of both deposits to confirm you have access to the account.
This verification step protects both you and Capital One by confirming the account is real and that you own it. If you do not complete the verification within a set time (usually 10 days), the process expires and you must start over. Once you enter the correct amounts, the account is permanently linked and you won't need to verify it again.
If the test deposits do not arrive after two business days, check that you entered the routing number and account number correctly. A single digit wrong will cause the deposits to fail. Return to the app, delete the account, and re-enter the information carefully before trying again.
Transferring money between linked accounts
Once a savings account is verified, you can transfer money to and from it using the Capital One app. Tap "Transfer," select the account you're sending money from, the account you're sending it to, and the amount. The transfer usually completes the same business day if both accounts are at Capital One, or within one to three business days if one account is at another bank.
Transfers between two Capital One accounts are free and typically when ready or complete by the end of the business day. Transfers from Capital One to an external bank account (or from an external account to Capital One) may take longer because they move through the ACH network, which processes transfers in batches.
You can set up recurring transfers if you want to move money on a regular schedule—for example, $200 to savings every payday. The app lets you choose the frequency (weekly, biweekly, monthly) and the date the transfer should occur.
Removing or unlinking an account
To remove a linked savings account, open the app, go to "Accounts," find the account you want to remove, tap the menu or settings icon next to it, and select "Remove Account" or "Unlink Account." The app will ask you to confirm. Once removed, the account no longer appears in your app, though the account itself remains open at the bank.
Removing an account does not close it or affect the money in it. It only disconnects it from your Capital One app. You can re-add the same account later by going through the verification process again. If you want to close the account entirely, you must contact the bank that holds it.
Troubleshooting common problems
If the app won't let you add an account, check that you're using the correct routing number and account number with no extra spaces or characters. The account must also be in your name; if it's a joint account or held by someone else, the verification will fail. Some banks also block external transfers by default, so you may need to contact your bank to allow Capital One to send test deposits.
If the test deposits don't arrive, wait the full two business days before assuming there's a problem—weekends and holidays don't count. If they still haven't appeared after two business days, delete the account from the app and re-enter the information. A single digit error in the routing or account number will cause the deposits to go to the wrong place.
If you see an error message like "Account not found" or "Invalid routing number," double-check both numbers against your bank statement or your bank's website. Call your bank's customer service if you're unsure. If the problem persists after you've verified the numbers are correct, contact Capital One's support team through the app or by phone.
Frequently Asked Questions
Can I add a savings account from a different bank?
Yes. You can link savings accounts from any U.S. bank to your Capital One app. You'll need that bank's routing number and your account number. The verification process is the same as for Capital One accounts.
How long does it take to verify a new account?
Verification usually takes one to two business days for the test deposits to arrive, then a few minutes for you to enter the amounts in the app. The account is fully linked and ready to use when ready after you confirm the deposit amounts.
What if I enter the wrong deposit amounts during verification?
You'll see an error message. You can try again, but you have a limited number of attempts (usually three). If you exceed the limit, the verification expires and you must delete the account and start over.
Do I need to verify the account every time I use it?
No. Verification happens only once, when you first add the account. After that, the account stays linked and you can transfer money without any additional verification steps.
Can I add a joint account or an account in someone else's name?
No. The account must be in your name only. If you're a joint owner, you can add it, but if the account belongs entirely to someone else, the verification will fail and you won't be able to link it.