What a Chase ABA number is and why you need it

Your Chase ABA number is a nine-digit code that identifies which Chase branch or processing center handles your account. Banks use it to route money correctly when you receive transfers, direct deposits, or payments from outside sources. It is not the same as your account number — the ABA tells the sending bank which bank to send money to, while your account number tells Chase which account within the bank to deposit it into.

You will need your ABA number whenever you set up direct deposit for payroll or benefits, arrange automatic bill payments from another bank, or receive a wire transfer. Some employers, government agencies, and billers ask for it before they can send you money. Without the correct ABA number, a transfer can be delayed or sent to the wrong place entirely.

Key Takeaways

  • Chase's main ABA number for most accounts is 021000021, though some branches and account types use different codes.
  • You can find your ABA number on the bottom left of any check you have, in your Chase online banking portal, or by calling Chase customer service.
  • The ABA number stays the same regardless of which Chase branch you visit or which state you live in, because it routes to Chase's central processing system.
  • If you are setting up a transfer and are unsure which ABA number to use, call Chase or ask the organization requesting it — using the wrong one can delay your payment by several business days.

Where to find your ABA number on a check

The easiest place to locate your ABA number is on any check from your Chase account. Look at the bottom left corner of the check. You will see three groups of numbers separated by colons or dashes. The first group of nine digits is your ABA number.

The format looks like this: 021000021:123456789:0. The first nine digits (021000021) are the ABA. The middle set is your account number. The last digit is a check digit used for verification. If you do not have a check handy, you can order one from Chase or use one of the other methods below.

Finding your ABA number in Chase online banking

Log into your Chase account through the Chase website or mobile app. Navigate to your account details or account information section — the exact location varies depending on whether you use the website or app, but it is usually under "Account" or "Settings."

Some Chase accounts display the ABA number directly on the account summary page. If you do not see it listed, look for a section labeled "Routing Number" or "Bank Information." If it is still not visible, you can call Chase customer service at the number on the back of your debit card, and they will provide it immediately. Have your account number and a form of ID ready when you call.

Chase ABA numbers for different account types

Most Chase personal checking and savings accounts use the ABA number 021000021. This is Chase's primary routing number for consumer accounts across the United States. However, some older accounts, accounts opened at specific branches, or business accounts may use a different routing number.

If you have a Chase business account, a money market account, or an account that has been open for many years, ask Chase directly which ABA number applies to your account. The safest approach is always to verify with Chase before you provide your ABA number to an employer or organization, especially if the transfer involves a large amount of money or is time-sensitive.

What happens if you use the wrong ABA number

If you give someone the wrong ABA number, the transfer may be rejected, returned to the sender, or delayed by several business days while the banking system tries to sort out where the money should go. The sender will eventually be notified that the transfer failed, but this can take three to five business days.

If the wrong ABA number happens to belong to another bank, the money could be deposited into a different bank's system entirely. In that case, you will need to contact both Chase and the other bank to trace the transfer and have it redirected. This process can take one to two weeks. Always double-check your ABA number before you give it to an employer, lender, or government agency.

ABA number versus account number and routing number

The terms "ABA number" and "routing number" are used interchangeably — they refer to the same nine-digit code. ABA stands for American Bankers Association, the organization that created the routing system. You may hear either term used by banks, employers, or billers.

Your account number is different and comes after the ABA number on your check. The account number identifies your specific account within Chase, while the ABA number identifies Chase itself. Both are required to set up most transfers. When someone asks for your "routing number," they are asking for your ABA number. When they ask for your "account number," they want the separate number that comes after it.

Using your ABA number for wire transfers and ACH payments

Wire transfers and ACH (Automated Clearing House) payments both require your ABA number, but they work differently. An ACH payment is a standard electronic transfer that typically takes one to three business days and is used for direct deposits, bill payments, and peer-to-peer transfers. A wire transfer is faster — usually completed the same day or next business day — but costs money and is typically used for larger amounts or time-sensitive payments.

For both types of transfers, you will provide your ABA number along with your account number to the person or organization sending you money. Make sure you have the correct ABA number before you initiate either type of transfer, because reversing a wire transfer is difficult and may not be possible if the money has already been withdrawn by the recipient.

Frequently Asked Questions

Is Chase's ABA number the same for everyone?

Most Chase customers use 021000021, but some accounts may have a different routing number depending on when the account was opened or what type of account it is. Call Chase or check your check to confirm which number applies to your account.

Can I use my ABA number to identify which Chase branch I bank with?

No. The ABA number routes to Chase's central processing system, not to a specific branch. Your account is processed the same way regardless of which branch you visit or which state you live in. The ABA number does not tell you or anyone else which branch holds your account.

What if someone asks for my ABA number and I am not sure I should give it?

Your ABA number is safe to share — it is not sensitive information like your PIN or full account number. However, always verify that you are giving it to a legitimate organization. If an employer or government agency asks for it, confirm the request through their official website or phone number before you respond.

Do I need a different ABA number for each of my Chase accounts?

No. All your Chase accounts at the same bank use the same ABA number. Your account number is what distinguishes one account from another. You only need one ABA number for all your Chase accounts.

How long does it take for a transfer to arrive if I provide the correct ABA number?

ACH transfers typically take one to three business days. Wire transfers usually arrive the same day or next business day. Direct deposits from employers often arrive on a set schedule, usually within one to two business days of the pay date. The exact timing depends on when the sender initiates the transfer and their bank's processing schedule.