The Short Answer
An account number is the unique string of digits that identifies your specific bank account. Where a routing number identifies the bank, your account number identifies you within that bank — it’s how the institution knows which account to credit or debit. You’ll need it to set up direct deposit, pay bills electronically, or link your account to other apps and services.
In short, your account number is your account’s personal ID — and it should be shared carefully.
Where to Find Your Account Number
Your account number appears in several familiar places:
- On a check. It’s the second set of numbers along the bottom, after the routing number.
- On your bank statement. Usually near the top, sometimes partly masked.
- In online or mobile banking. Under your account details, often behind a “show” tap.
- On a deposit slip. Printed at the bottom alongside the routing number.
Account Number vs. Routing Number
These two numbers work together but do different jobs:
- Routing number — identifies your bank or credit union (nine digits, shared by everyone at that institution).
- Account number — identifies your individual account (unique to you; length varies by bank).
Think of it like an address: the routing number is the building, and the account number is your apartment. A transfer needs both to land in the right place.
A Simple Example
Example: Suppose you start a new job and need to set up direct deposit. Your employer asks for your routing number and account number. The routing number tells their payroll system which bank to send your pay to; your account number tells the bank to deposit it into your checking account specifically. Get one digit wrong in the account number and your paycheck could be delayed or misdirected — which is why it’s worth double-checking.
Keeping Your Account Number Safe
- Share it only with trusted parties. Employers, billers you set up, and your own linked apps.
- Be wary of requests. Legitimate companies rarely ask for it by email or text out of the blue.
- Shred old statements and voided checks rather than tossing them whole.
The Bottom Line
Your account number is the unique ID for your specific bank account, working alongside the routing number that identifies your bank. You’ll use it for direct deposit, electronic payments, and linking accounts. Because it can be used to move money, share it only with trusted parties and keep documents that show it secure. Knowing where to find it — on a check, statement, or in your banking app — makes setup tasks quick and accurate.
Frequently Asked Questions
What is an account number in simple terms?
It’s the unique number that identifies your specific bank account. While the routing number identifies your bank, the account number tells the bank exactly which account to use.
Where do I find my account number?
Look on a check (the second set of numbers at the bottom), your bank statement, a deposit slip, or your online and mobile banking under account details. Apps often hide it behind a “show” tap.
What’s the difference between an account number and a routing number?
The routing number identifies your bank and is shared by all its customers. The account number identifies your individual account and is unique to you. Transfers need both to reach the right place.
Is it safe to give out my account number?
Share it only with trusted parties like your employer or billers you set up. Be cautious of unexpected requests, and protect documents that show it. Treat it as sensitive information.
Does every account have a different account number?
Yes. Each account you hold — checking, savings, and so on — has its own unique account number, even at the same bank. The routing number, however, is usually the same across your accounts there.
What happens if I enter the wrong account number?
A payment or deposit could be delayed, rejected, or sent to the wrong account. Always double-check the digits when setting up direct deposit or transfers, and contact your bank promptly if you spot an error.
This article is for educational purposes only and is not financial or legal advice. Bank terms, fees, and rules vary by institution. For guidance on your own accounts, check with your bank or a qualified financial professional.