What is the Bank of America account number format
The Bank of America account number format follows a consistent structure: a 9-digit routing number followed by a 10-digit account number on paper checks and many online references. For most consumer deposit accounts, the account number is 10 digits, although some newer digital accounts or specialized products may vary slightly in length. Both numbers appear together on personal checks at the bottom, with the routing number first, then the account number, then the check number. Understanding this layout helps you locate, verify, and share the correct digits when setting up direct deposit, transfers, or automated payments.
How Bank of America numbers are used in banking
Routing and account numbers work together to route transactions to the correct institution and customer. The routing number identifies Bank of America within the Federal Reserve and ACH networks, while the account number identifies your specific deposit or payment account. These numbers appear on checks, deposit slips, and selected online account details. They are required for direct deposits, electronic transfers, and wire instructions, and they differ from your debit card number, which uses a different numbering system and issuer identification. Using the correct routing and account combination reduces returns, delays, and processing issues.
Routing number vs account number
- Routing number: 9 digits that identify Bank of America as the financial institution.
- Account number: Typically 10 digits that identify your individual account within Bank of America.
- Check number: Appears at the far right of the MICR line and is not used for routing or automatic payments.
Where to find your Bank of America account number
You can locate your Bank of America account number in several reliable places. On personal checks, the MICR line at the bottom contains three groups of numbers: routing number, account number, and check number, in that order. In the Bank of America mobile app or online banking, view account details under the account name or settings section. Account opening documents and welcome packets also list both routing and account numbers. For support, statements and official letters mailed by the bank display these numbers alongside your identifying information.
Bank of America account number format at a glance
| Item | Verified detail | Source type |
|---|---|---|
| Routing number | 9 digits | Bank-issued MICR |
| Account number | Typically 10 digits | Bank-issued account identifier |
| Check number | Varies, usually at right | Per-check sequence |
Common locations on checks and statements
On a personal check, the bottom MICR line is divided into three groups. The first 9 digits represent the routing number, the next 10 digits are the account number, and the last set is the individual check number. On monthly statements and certain account disclosures, the routing and account numbers may appear near the top for reference. When in doubt, confirm these numbers with Bank of America customer service rather than relying on a duplicate or image that may be cropped or low-resolution.
How to verify your account number
To confirm accuracy, compare the number from an official document—such as a voided check or account welcome packet—with what you see in online banking. If the digits don’t match or you see fewer or more digits than expected, contact Bank of America support. When setting up direct deposit or automated transfers, always confirm both the routing and account numbers in writing or via secure messaging inside your online profile. Small differences, such as a missing leading zero, can cause payment failures or misdirected funds.
When account numbers change
In most cases, your Bank of America account number remains the same for the life of the account. You may receive a new number if the bank issues replacement checks in a different format, or if you close and reopen an account. Wire transfers and certain electronic payments sometimes require the current routing and account details, so verify before sending. If you recently closed and reopened an account, confirm whether you were issued a new account number to avoid returns.
Tips for entering and storing account numbers
- Double-check digits before submitting payment or setting up direct deposit.
- Store numbers in a secure password manager or encrypted note rather than plain text files.
- Use official bank portals or verified payee portals rather than typing long numbers manually when possible.
- Keep voided checks and welcome packets in a secure place for reference.
- Contact Bank of America if you suspect a wrong number was used, especially if the transaction has not cleared.