Commonwealth Bank Fraud: How to Report It and Stop the Money
If money left your Commonwealth Bank account without your permission, or you paid a scammer, contact Commonwealth Bank straight away and ask it to block the payment and your card. The first minutes matter most.
Do this first
- Call Commonwealth Bank’s official line below, or use help inside the official Commonwealth Bank app. Never use a number from a text, a caller or a search result.
- Give them the transaction details (amount, time, and the account or number you paid) and ask them to block your card and stop or recall the payment.
- Change your online banking password and PIN if anyone may know them. Commonwealth Bank will never ask for your PIN, password or a one-time code.
- Report it to the police too: see who handles cybercrime in Australia, and keep screenshots of every message and payment.
Official Commonwealth Bank fraud contacts
Commonwealth Bank (CommBank)
Bank- Report a scam:13 2221
- Business (CommBiz) customers, option 4:13 1998
- From overseas:+61 2 9999 3283
App or online: CommBank app: Message us to report a scam, at any time. Lost card: Cards › Report lost, stolen or damaged card.
Report phishing: [email protected]
Know this about Australia
- The Scams Prevention Framework law has passed, but banks only have to meet its obligations from 31 March 2027. It does not yet give you a right to a refund.
- NAB and ANZ list only overseas numbers on their fraud pages. Inside Australia, use the bank's app or the number on the back of your card.
If Commonwealth Bank won’t help
Scamwatch (ACCC)
Report a scam so authorities can take down scam sites and contacts and warn others. Scamwatch does not recover money.
Online form. For a police report, use ReportCyber at cyber.gov.au. Call 000 if you are in immediate danger.
Official websiteIDCARE
Free national identity and cyber support service for people in Australia and New Zealand after a scam or identity theft.
Official websiteYour rights as a Commonwealth Bank customer in Australia
- ePayments Code (ASIC). A voluntary code that most major banks follow. It sets who pays for unauthorised card, online and mobile transactions, and how to recover a payment sent to the wrong account by mistake. Source
Report it to the police too
Cybercrime agencies in Australia lists who to report to, and our step-by-step guide covers the rest: How to Report a Scam or Cybercrime in Australia (and Recover Your Money).
Common questions about Commonwealth Bank fraud
- What is the Commonwealth Bank fraud helpline number?
- Commonwealth Bank lists these numbers on its own website: Report a scam: 13 2221; Business (CommBiz) customers, option 4: 13 1998; From overseas: +61 2 9999 3283. Always dial the number printed on your card or shown in the official app if you are unsure.
- How do I report fraud to Commonwealth Bank?
- Call Commonwealth Bank's official line, or report it in the app or online: CommBank app: Message us to report a scam, at any time. Lost card: Cards › Report lost, stolen or damaged card.. Tell them the amount, the time and the account the money went to, and ask them to block your card or the payment.
- What if Commonwealth Bank will not help or refund me?
- In Australia you can complain to Scamwatch (ACCC), IDCARE. Details of what each one handles are on this page.
Other providers in Australia
These contacts were read on Commonwealth Bank’s own website on 3 October 2026. If a number has changed, use the one in the official app and tell us. Ministry of Cyber Affairs is not Commonwealth Bank and cannot recover money. All Australia providers are in Bank Fraud Help: Australia.