What is a BSB Number?

A BSB number is a 6-digit code that stands for Bank-State-Branch. It is used across Australia to identify individual bank branches for domestic money transfers, direct debits, and payroll payments.

What Does BSB Stand For?

BSB stands for Bank-State-Branch. The name describes exactly what the code represents: which bank it belongs to, which state the branch is in, and which specific branchit identifies. This system was introduced to streamline electronic payments across Australia's banking network.

BSB Number Format Explained

A BSB number consists of 6 digits, typically written as XXX-XXX with a hyphen separating the first three digits from the last three:

Digits	Meaning	Example
1st & 2nd	Bank Code	06 = CBA, 01 = ANZ, 03 = Westpac
3rd	State Code	2 = NSW, 3 = VIC, 4 = QLD
4th-6th	Branch Code	Specific branch within the bank and state

BSB Number vs Account Number

Your BSB number identifies the bank and branch, while your account number identifies your specific account. To make a domestic bank transfer in Australia, you need both. Think of the BSB as the address of the bank, and the account number as the room number.

How to Find Your BSB Number

1Bank statement — printed near the top alongside your account number.
2Online banking — on your account details page in your bank's app or website.
3BSB lookup tool — use our free BSB lookup to search by bank or BSB number.
4Contact your bank — call customer service or visit a branch.

BSB Numbers by Major Australian Banks

CBACommonwealth Bank ANZANZ INGING WestpacWestpac BOQBank of Queensland TMBTeachers Mutual Bank St.GeorgeSt.George Bank NABNAB MacquarieMacquarie Bank SuncorpSuncorp Bank

Frequently Asked Questions

What is a BSB number in Australia?

A BSB (Bank-State-Branch) number is a 6-digit code used in Australia to identify individual bank branches. It is required for all domestic electronic fund transfers, direct debits, and payroll payments.

Is a BSB the same as a sort code?

They serve a similar purpose but are different systems. BSB is used in Australia (6 digits), while sort codes are used in the UK and Ireland (also 6 digits). For international transfers, you would use SWIFT/BIC codes or IBANs instead.

Do all Australian banks have BSB numbers?

Yes, all authorised deposit-taking institutions (ADIs) in Australia are assigned BSB numbers by the Australian Payments Network (AusPayNet). This includes major banks, credit unions, and building societies.

Can two banks have the same BSB number?

No. Each BSB number is unique and assigned to a specific bank and branch. However, a single BSB can be shared across multiple services within the same branch.

How many digits is a BSB number?

A BSB number is always 6 digits, typically written in the format XXX-XXX. The first two digits identify the bank, the third digit identifies the state, and the last three digits identify the branch.

What happens if I use the wrong BSB?

If you enter an incorrect BSB, your payment may be rejected, delayed, or sent to the wrong account. Always verify the BSB with the recipient before making a transfer. If a payment goes to the wrong account, contact your bank immediately.