ANZ is paying hundreds of millions of dollars in compensation to customers over a variety of account processing errors.

ANZ chief executive Shayne Elliott admits the bank had applied "bandaid" solutions that did not work to fix the problems.

The five different errors each led to large numbers of customers being overcharged or not receiving agreed discounts or benefits in relation to their home loans.

Shayne Elliott ANZ royal commission

ANZ chief executive Shayne Elliott admits the bank had applied 'bandaid' solutions

Mr Elliott said the total number of accounts affected was approaching two million, but noted many would be double counted such as where a customer received both credit card and home loan remediation.

"It is hundreds of millions of dollars when it is added up," he told the banking royal commission on Wednesday.

ANZ last month announced a $374 million provision for refunds to customers and related remediation costs over its product issues and inappropriate advice or fees-for-no-service.

"Some of that is money that will go back to customers. That's theirs," Mr Elliott said.
The rest reflected the cost of running the remediation programs.

Mr Elliott said ANZ did not adequately address the processing errors, blaming a complex organisation structure.

"When you run a confederated business model, when things break in them, when errors happen, it's less likely they get accelerated at a board or executive committee.

"... If issues are not raised to the appropriate level, there is an inability to connect the dots and see that something is systemic here."

Mr Elliott agreed that meant it was more likely that a bandaid solution was applied.

He said ANZ was simplifying its organisation.

The royal commission heard ANZ was one of two financial services organisations that the corporate regulator said viewed customer remediation as a distraction in the past.

A January 2018 ANZ document said: "It was seen as a distraction, at the expense of earning revenue, and therefore not always given the highest priority."

Mr Elliott said it was a mid-level executive's observations it conceded it was a valid perspective.

"There will have been an element of that, most certainly.

"I do not believe it was pervasive across the organisation."

Mr Elliott said at times ANZ had become far too focused on revenue as a definition of good behaviour or good outcomes.

"People who drove good revenue outcomes were seen to be doing a good job, and we paid less attention to how they achieved those outcomes," he said.