Search the AusPayNet BSB directory by BSB number, bank, branch or suburb, and see the address, state and payment streams for each match.
Australian Payments Network Limited (AusPayNet) BSB file, 1 October 2026
Look up a BSB
Results appear here. The directory loads the first time you search.
Source: Australian Payments Network Limited (AusPayNet) BSB file, 1 October 2026. Official AusPayNet BSB search . Details can change monthly and may be wrong or out of date. AusPayNet accepts no liability for this data, so check the BSB and account details with the bank or the payee before you pay.
What a BSB is
BSB stands for Bank-State-Branch. AusPayNet administers the BSB system for financial institutions in Australia, and its cheque specification says the BSB identifies the issuing financial institution and its branch. The account number is a separate field, in a format the institution decides.
Where to find yours: your bank's app, online banking and statements normally show the BSB beside the account number. If you only know the bank and the suburb, the search above lists the BSBs for that branch.
How the digits are structured
AusPayNet writes a BSB as XXX-XXX. In its MICR Technical Specifications (V3.3.2, September 2017), it explains that the institution is identified by a two- or three-digit numeric code allocated by AusPayNet. For institutions with a two-digit code, the third digit usually represents the State of the issuing branch. The remaining digits are a three-digit Branch identifier issued by the institution itself.
Two examples from AusPayNet's key to abbreviations: Australia & New Zealand Banking Group Limited (ANZ) uses the two-digit prefix 01, and Bendigo and Adelaide Bank Limited (BBL) uses the three-digit prefix 633. The state digit is a rule of thumb, not a guarantee, so rely on the state shown in the result.
Some listings are labelled as merged or point to another BSB. Those rows are kept as AusPayNet publishes them, so read the branch and address columns before you copy a number.
Where the data comes from
Source: Australian Payments Network Limited (AusPayNet) BSB file, 1 October 2026. AusPayNet updates the BSB database on the first (NSW) business day of each month. The directory is not loaded until you search, and nothing you type is sent anywhere. The official search is at bsb.auspaynet.com.au.
The listings come from information supplied by banks and other financial institutions. They can be out of date or wrong, and AusPayNet accepts no liability for them. Before you send money, confirm the BSB and account number with your bank or the person you are paying; a payment to a wrong account may not be recoverable.
BSB lookup FAQs
What does BSB stand for?
BSB stands for Bank-State-Branch. AusPayNet administers the BSB system for financial institutions in Australia, and its cheque specification says the BSB field identifies the issuing financial institution and its branch.
How is a BSB number made up?
AusPayNet's cheque specification says the financial institution is identified by a two- or three-digit numeric code allocated by AusPayNet. For institutions with a two-digit code, the third digit usually represents the State of the issuing branch. The institution then sets a three-digit Branch identifier. A BSB is written XXX-XXX.
Does my bank have more than one BSB prefix?
Some do. In AusPayNet's key to abbreviations, Westpac Banking Corporation is listed against the prefixes 03, 04, 73, 74, so the first digits of a BSB are not a reliable way to tell which brand an account is with. Search the full BSB to see the institution and branch it belongs to.
What do the payment stream letters mean?
AusPayNet's BSB search describes the stream codes as P for paper (cheques), E for electronic (direct entry), H for high value and N for real time (new payments platform). The monthly file this tool uses lists the P, E and H streams a BSB takes part in.
Is a BSB missing from the results unusable?
Not necessarily. A BSB can be missing because it was typed wrongly, has been closed or merged, or is newer than the file. AusPayNet also says a BSB that is not flagged as NPP-enabled should not be assumed to be unavailable for NPP payments, and that the AP+ Business Reference Data Table is the authoritative source for NPP-reachable BSBs. Confirm with the bank or the payee.
How current is the data?
This tool uses the AusPayNet BSB file dated 1 October 2026. AusPayNet updates its BSB database on the first (NSW) business day of each month. For a payment you are about to make, the official AusPayNet search is the place to double-check.
