Free · Australia

BSB number checker

Check an Australian BSB (Bank-State-Branch) number and account number before you pay, and see which bank the BSB belongs to.

Checked and returned — never stored or logged.

How BSB number details are built

06Bank (here Commonwealth Bank)
2State
000Branch

Frequently asked questions

What is a BSB?

A six-digit code identifying an Australian bank and branch. With the account number it is all you need to pay an Australian account domestically.

How long is an Australian account number?

Usually 6 to 9 digits, depending on the bank.

Check bank details from your own app

The same validation is in the FluxRail API — for every country, in one call — and runs automatically on every payout you send.

Read the API docs

More free bank tools