Your routing number is a nine-digit code that identifies which bank or credit union holds your account

The routing number tells the financial system where to send money when someone pays you or when you send money out. It is not unique to you — everyone at your bank shares the same routing number. Your account number is what makes the transaction go to your specific account, not someone else's at the same bank.

You need the routing number when you set up direct deposit at a job, arrange automatic bill payments, or send money by wire transfer. Without it, the payment system does not know which institution to contact.

Key Takeaways

  • Your routing number is a nine-digit code printed on the bottom left of your checks, and it identifies your specific bank or credit union.
  • The routing number is the same for all customers at your bank, but your account number is unique to you.
  • You can find your routing number on a check, by calling your bank, or by searching the Federal Reserve's routing number database using your bank's name and state.
  • Wire transfers, direct deposit, and automatic bill payments all require your routing number to reach the correct financial institution.

Where to find it on a check

If you have a checkbook, the routing number is printed on the bottom left of every check. It is the first set of nine digits, followed by your account number (which is longer), then the check number on the far right.

The routing number appears in the same position on every check from your account because it belongs to your bank, not to you. If you have checks from a different account at the same bank, the routing number will be identical.

How to find it without a check

Call your bank's customer service number on the back of your debit card or on your bank's website. Tell them you need your routing number. They will give it to you in under a minute — this is one of the fastest questions a bank can answer.

You can also search the Federal Reserve's routing number database at frbservices.org. Enter your bank's name and the state where your account is held. The database will return all routing numbers associated with that bank in that state. If your bank has multiple locations or merged with another bank, there may be more than one number listed — call your bank to confirm which one applies to your account.

Your online banking portal may also display your routing number. Log in, navigate to account details or settings, and look for a section labeled "routing number" or "bank information." Not all banks display it this way, but many do.

Why banks have routing numbers instead of one number per person

The routing number system was built in the 1910s, long before computers. Banks needed a way to sort checks by hand — the routing number told postal workers and bank clerks which institution to send the check to. The account number then told that institution which customer's account to deposit it into.

That two-part system (routing number plus account number) is still how payments move today, even though the sorting happens electronically now. The routing number identifies the destination bank; the account number identifies you within that bank.

What happens if you give the wrong routing number

If you provide an incorrect routing number, the payment system will either reject the transaction or send the money to the wrong bank. If it goes to the wrong bank, that bank will eventually notice the error and return the funds to the sender — but this can take several days or weeks.

For direct deposit from an employer, a wrong routing number usually causes the deposit to fail, and your employer's payroll department will contact you to correct it. For bill payments, the payment may be rejected, or it may reach the wrong institution and be returned. Always double-check the routing number before you submit a payment or set up direct deposit.

Routing numbers for wire transfers and ACH payments

Wire transfers and ACH transfers (the system used for direct deposit and automatic bill payments) both use routing numbers, but wire transfers sometimes require an additional code called a SWIFT code if the money is going to a bank outside the United States.

For domestic transfers within the US, your routing number is all you need. For international wire transfers, ask your bank whether you need a SWIFT code in addition to the routing number. Different banks handle this differently, and your bank's wire department can tell you exactly what information to provide.

When your routing number changes

Your routing number can change if your bank merges with another bank, if your bank is acquired, or if your bank restructures its operations. When this happens, your bank will notify you and provide the new routing number. You will need to update any automatic payments or direct deposit arrangements with the new number.

If you have old checks printed with the old routing number, they may still work for a period of time — many banks honor old routing numbers during a transition — but you should not rely on this. Contact your bank to ask how long the old number will be accepted, and update your information as soon as possible.

Frequently Asked Questions

Is my routing number the same as my bank's main number?

No. Your bank's main customer service number is for calling to talk to a person. Your routing number is a nine-digit code used by the payment system to identify your bank electronically. They are completely different.

Can someone steal money from my account if they know my routing number?

Not with the routing number alone. They would also need your account number, and even then, most banks require additional verification before processing a payment. Routing numbers are public information — they are printed on every check. The account number is what matters, and you should protect that.

Do I need a different routing number for savings and checking accounts?

No. Both accounts at the same bank use the same routing number. The account number is what distinguishes between your checking account and your savings account. When you provide the routing number plus the account number, the payment system knows exactly where to send the money.

What if my bank has multiple branches?

All branches of the same bank share one routing number. The branch you opened your account at does not matter — the routing number is the same whether you visit the downtown location or the one in the suburbs. The account number is what ties the money to your specific account.

Can I use my routing number to receive money from outside the US?

For international transfers, your bank may require a SWIFT code in addition to your routing number. Ask your bank's international wire department what information the sender needs to provide. Some banks accept routing numbers for international transfers; others require the SWIFT code instead.