A widespread Westpac outage is affecting several banks it owns, leaving thousands of customers unable to use online banking services and eftpos terminals. 

Westpac confirmed it is experiencing the issue this afternoon, but failed to say what is causing the problem.

“We’re aware some customers are experiencing issues accessing banking services,” a spokesperson said. 

A widespread Westpac outage is affecting several banks. (Nine)

“We’re working to restore services as quickly as possible and apologise to customers for the inconvenience.”

The same issue is also affecting St George, BankSA and Bank of Melbourne customers.

According to DownDetector, customers began experiencing issues just before 1pm.

At the peak, more than 1000 people reported an issue with their services. 

Westpac also owns RAMS and BT, which are unaffected by today’s outage.