routing number

Routing Number

A routing number is a nine-digit code that identifies a specific financial institution within the United States banking system. Every bank and credit union is assigned at least one routing number, and this code tells other banks and payment systems exactly where to send money when you make a transfer or payment.

Routing numbers are typically printed on the bottom-left corner of a personal check, followed by your account number and the check number. They are also generally available through your bank’s website or mobile app, usually in the account details section. Some larger banks have more than one routing number, often depending on the state where you opened your account, so it is worth confirming the correct one before initiating a transfer.

In most cases, you will need to provide a routing number alongside your account number when setting up direct deposit, making an electronic payment, or linking your bank account to an external app or service. The routing number alone does not give anyone access to your funds. It simply directs a transaction to the right financial institution.

Why It Matters

Providing the wrong routing number is one of the most common reasons electronic payments fail or get delayed. If you enter an incorrect number when setting up direct deposit or paying a bill, your transaction may be rejected or, in some cases, sent to the wrong institution entirely. Taking a moment to verify your routing number before submitting a payment can save you significant time and frustration.

Routing numbers also play a role in how quickly funds move between accounts. Transfers between accounts at the same institution typically process faster than those involving two different banks, partly because no routing between external systems is required.

Example

Suppose you start a new job and your employer asks you to fill out a direct deposit form. You would provide your bank’s routing number and your personal checking account number. Your employer’s payroll system uses the routing number to identify your bank, then uses the account number to deposit your paycheck into the correct account. Without the routing number, the payment system would have no way of knowing which financial institution to contact.

Related Terms

• Account number
• ACH transfer (Automated Clearing House)
• Direct deposit
• Wire transfer
• SWIFT code