Your member number is a code your bank assigns to you as a customer, separate from your account number
A member number is an identifier that ties you to your bank as a customer. It is not the same as your account number. Your account number identifies a specific account you hold (checking, savings, money market); your member number identifies you as a person or business who has a relationship with that bank. Some banks call it a customer number, client number, or customer ID instead.
If you have multiple accounts at the same bank—a checking account and a savings account, for example—both accounts belong to the same member number. If you move to a different bank, you get a new member number because you are now a customer of a different institution.
Your member number typically appears on statements, in online banking, and on cards issued by the bank. It is usually shorter than your account number, often 6 to 10 digits, though the exact length varies by bank.
Key Takeaways
- Your member number identifies you as a customer of the bank; your account number identifies a specific account you hold at that bank.
- Banks use member numbers to link all your accounts, cards, and services under one customer profile.
- You can find your member number on your bank statement, in your online banking portal, or by calling customer service.
- You may need your member number when opening new accounts, disputing transactions, or updating account information.
Where to find your member number
Your member number appears in several places. Check your most recent bank statement—it is usually printed near the top or bottom, often labeled as "Member Number," "Customer Number," or "Client ID." If you use online banking, log in and look for account settings or profile information; your member number is typically displayed there.
You can also call your bank's customer service line and ask for your member number. Have your account number or the phone number associated with your account ready, and the representative will provide it. Some banks print the member number on debit cards or credit cards issued by the bank, though not all do.
Why banks assign member numbers
Banks use member numbers to organize their customer records. When you open an account, the bank creates a customer profile under your member number. Every account you open at that bank, every card issued to you, and every service you use (online banking, bill pay, wire transfers) connects to that single member number in the bank's system.
This structure makes it easier for the bank to manage your relationship with them. If you call with a question, the representative can pull up your entire profile using your member number and see all your accounts and services at once. It also helps the bank track fraud risk, monitor for suspicious activity, and comply with regulations that require them to know their customers.
When you need to provide your member number
You may be asked for your member number in several situations. If you are opening a new account at the same bank, the bank may ask for your member number to link it to your existing customer profile. If you are disputing a transaction or reporting fraud, customer service may request it to pull up your account history quickly.
Some banks ask for your member number when you are setting up bill pay, authorizing a wire transfer, or updating your contact information. You may also need it if you are applying for a loan or credit product through the bank, because the bank wants to verify that you are an existing customer.
In most cases, providing your account number is sufficient, and the bank can look up your member number from there. But having your member number on hand can speed up the process.
Member number versus account number: what is the difference
Your account number identifies one specific account. If you have a checking account and a savings account at the same bank, each has its own account number. Your account number is what you use to receive direct deposits, set up automatic payments, or give to someone who needs to send you money. It is printed on your checks and statements.
Your member number identifies you as a customer of the bank overall. It stays the same across all your accounts at that bank. Think of it this way: the member number is you; the account number is the specific account. A bank may have thousands of accounts, but each one belongs to a member number.
When you close an account, the account number goes away, but your member number remains active as long as you have at least one account at the bank. If you close all your accounts and leave the bank, your member number becomes inactive.
Privacy and security with your member number
Your member number is not as sensitive as your account number or Social Security number, but you should still treat it as private information. Do not share it with people you do not trust. Scammers sometimes use member numbers as part of social engineering attacks, where they call pretending to be from the bank and ask you to confirm personal details.
If someone calls you claiming to be from your bank and asks for your member number, hang up and call the bank directly using the number on your statement or their official website. Your bank already has your member number on file and should not need you to provide it unsolicited.
If you believe your member number has been compromised or misused, contact your bank immediately. They can monitor your accounts for fraud and take steps to protect your customer profile.
Frequently Asked Questions
Is my member number the same at every bank?
No. Each bank assigns you a different member number. If you have accounts at Bank A and Bank B, you have a different member number at each one. Your member number only applies to that specific bank.
Can I change my member number?
No. Your member number is assigned by the bank and cannot be changed. It is tied to your customer record and remains the same for as long as you are a customer at that bank.
Do I need my member number to receive a direct deposit?
No. You need your account number and routing number to receive a direct deposit. Your member number is not required for this. Your employer or the organization sending the deposit only needs the account and routing numbers.
What happens to my member number if I close my account?
If you close one account but keep others at the same bank, your member number stays active. If you close all your accounts at the bank, your member number becomes inactive, though the bank may keep the record on file.
Is my member number printed on my debit card?
Not always. Some banks print the member number on debit cards, but many do not. Check your card or your statement to see if it appears. Your account number is more commonly printed on cards.