Where to find your routing and account numbers on a check
Your routing number and account number are printed at the bottom of every check you receive. The routing number comes first, followed by your account number, then the check number at the far right. All three are printed in magnetic ink character recognition (MICR) format — the numbers have a distinctive blocky appearance that looks slightly raised or embossed.
The bottom left corner of the check holds the routing number. It is always nine digits long. Immediately to its right is your account number, which varies in length depending on your bank but is typically between 10 and 12 digits. The check number appears on the far right of the MICR line and also in the upper right corner of the check itself.
If you are looking at a check and the MICR line is faded, smudged, or missing, you can find both numbers on your bank statement or by logging into your online banking account. Your bank's website or mobile app will display your routing and account numbers under account details or settings.
Key Takeaways
- The routing number (nine digits) appears first on the MICR line at the bottom of the check, followed immediately by your account number.
- Your account number length varies by bank but is typically 10 to 12 digits and identifies your specific account at that bank.
- The check number appears on the far right of the MICR line and also printed in the upper right corner of the check.
- If the MICR line is unreadable, your bank statement or online banking portal will show both your routing and account numbers.
Understanding the nine-digit routing number
The routing number identifies which bank or credit union holds your account. It is always nine digits and never changes for your bank, even if you open new accounts or move to a different branch. The first four digits represent the Federal Reserve routing symbol, the next four identify your specific bank, and the final digit is a check digit used to verify the number is correct.
Every bank in the United States has its own routing number. If you have accounts at two different banks, each check will show a different routing number. The routing number is what tells the payment system where to send money when someone deposits or cashes your check.
You can verify your routing number by searching the Federal Reserve's routing number database online, or by calling your bank directly. Having the correct routing number matters when you set up direct deposit, arrange wire transfers, or provide banking information to an employer or government agency.
Understanding your account number
Your account number identifies your specific account within your bank. While the routing number tells the payment system which bank to use, the account number tells that bank which of its thousands of accounts should receive or send the money. Account numbers vary in length — some banks use 10 digits, others use 12 or more — but yours will be consistent across all your checks from that bank.
Your account number appears on every check, every bank statement, and in your online banking portal. It is unique to you and your account; no other person at your bank will have the same account number. If you close an account and open a new one at the same bank, you will receive a new account number and new checks with that number printed on them.
When you provide your banking information to set up automatic payments, direct deposit, or wire transfers, you will need to give both your routing number and account number together. One without the other is not enough for the payment to reach the right place.
How the MICR line works
The numbers at the bottom of your check are printed in MICR format so that high-speed check-processing machines can read them automatically. The blocky, distinctive appearance of MICR numbers makes them readable by both machines and humans, even if the check is slightly damaged or faded. Banks process millions of checks daily, and MICR technology allows them to sort and route checks without manual data entry.
The MICR line always follows the same order: routing number, account number, check number. This standardized format means that any bank's processing equipment can read any other bank's checks. If you look at checks from different banks, you will notice the MICR numbers look the same — that consistency is intentional and required by banking standards.
If the MICR line on your check is damaged or illegible, the check may be rejected during processing or sent back to you. For this reason, you should avoid writing on or damaging the bottom of your checks, and handle them carefully if they will be deposited or mailed.
Routing number vs. account number: what each one does
The routing number and account number serve different purposes, and both are necessary for a payment to reach your account. Think of the routing number as the address of the bank building, and the account number as the mailbox number inside that building. Without the routing number, the payment system does not know which bank to contact. Without the account number, the bank receives the money but does not know which customer it belongs to.
When you receive a direct deposit from your employer, the employer uses your routing number to find your bank and your account number to deposit the money into your specific account. If either number is wrong, the deposit will either be rejected or sent to the wrong account. The same applies to wire transfers, automatic bill payments, and other electronic transfers.
For checks deposited by mail or at an ATM, the routing and account numbers are read by the bank's processing equipment and used to route the check to the correct bank and account for payment. The check itself is the instruction to move money from your account to whoever is depositing it.
Common mistakes when reading routing and account numbers
The most common mistake is confusing the routing number with the account number. The routing number is always nine digits and appears first on the MICR line. If you see a longer number, that is your account number. Another frequent error is transposing digits — writing down a 5 as a 6, or an 8 as a 3. MICR numbers are designed to be readable, but it is easy to misread a single digit, especially if the check is old or the ink is faded.
Some people also mistake the check number for the account number. The check number is the smallest number on the MICR line and appears on the far right. It changes with every check you write, while your account number stays the same. If you are setting up direct deposit or a wire transfer, you need your account number, not your check number.
If you are unsure whether you have copied the numbers correctly, verify them through your bank's website or by calling your bank's customer service line. Providing incorrect routing or account numbers to an employer, government agency, or payment service can delay or prevent money from reaching your account.
Where to find routing and account numbers if you do not have a check
If you do not have a physical check available, you can find your routing and account numbers through several other sources. Your bank statement — whether printed or online — displays both numbers. Log into your online banking account and look for account details, account information, or settings; most banks display the routing and account numbers prominently in one of these sections.
You can also call your bank's customer service number, which is usually printed on the back of your debit card. A representative can provide both numbers over the phone. If you need the numbers for a specific purpose like setting up direct deposit, your employer's human resources department may also be able to look them up if you provide your name and bank name.
The Federal Reserve maintains a public routing number database that you can search by bank name and state. This is useful if you know your bank but need to verify the correct routing number before providing it to an employer or payment service.
Frequently Asked Questions
Why do I need both the routing number and account number?
The routing number tells the payment system which bank to use, and the account number tells that bank which of its accounts should receive the money. Without both, the payment cannot reach your account. It is like needing both a street address and an apartment number to deliver mail to the right place.
Does my routing number change if I move to a different branch?
No. Your routing number is tied to your bank, not to a specific branch. If you move or switch branches, your routing number stays the same. Your account number also stays the same unless you close the account and open a new one.
Can I use the check number instead of the account number?
No. The check number is unique to that individual check and changes with every check you write. For direct deposit, wire transfers, and other banking purposes, you must provide your account number, not the check number. The account number is the permanent identifier for your account.
What if the MICR line on my check is smudged or faded?
If the numbers are still partially readable, most banks can process the check. If the MICR line is completely illegible, the check may be rejected or delayed. You can find your routing and account numbers on your bank statement or online banking portal instead of relying on the check itself.
Are routing numbers the same across all banks?
No. Each bank has its own unique routing number. If you have accounts at two different banks, each will have a different routing number. The routing number is how the payment system distinguishes between banks during processing.