The head of Australia's central bank backed the royal commission's recommendations of wide-ranging reforms as sensible and balanced.

Mr Lowe said bank leaders were responsible for driving cultural change and accountability started at the top.

"We didn't find ourselves in this position because of bad regulators," he told the National Press Club in Sydney on Wednesday.

"The fundamental problem isn't with the regulators, it's with the managers of the banks.

"They're the ones who made the loan decisions, who treated the people poorly, who didn't address conflict of interest issues, who prioritised sales over service.

"It's the managers of the banks who are ultimately responsible here, so I find it slightly frustrating that some people might blame the regulators for ending up in the position that we've ended up in."

He would not comment on the future of National Australia Bank's CEO Andrew Thorburn and chairman Ken Henry, a former Treasury secretary.

Royal commissioner Kenneth Hayne QC's final report expressed serious concerns about the leadership of Mr Thorburn and Dr Henry, saying he was not confident the lessons of the past had been learned.

Mr Thorburn has pledged to lead the necessary changes at the bank, but admits he does not know if he will still have his job come Friday.

"I can't guarantee that, but I can tell you that I am committed and more deeply determined than ever to be a strong leader for our company and help us become the sort of company we want to be," he told the ABC.

Mr Lowe said banks knew they had to win back the trust of the Australian people.

"I really hope and expect that the banks learn the lessons."

Some analysts believed the inquiry's final report was a clear win for the banks after Mr Hayne decided against recommending radical structural reform of the industry.

Mr Lowe said it was right to decision.

"I think what we needed here was fairly far-reaching reform, not revolution, and that's exactly what we've got," he said.

"Now it's up to both the banks, the government and the regulators to implement it and I think the path we're on is a reasonable one."

Mr Lowe agreed in-principle with a ban on trailing or ongoing commissions for mortgage brokers and the payments being up front, but said the government was right to be cautious about the competition issues involved with making the borrower pay.

Commonwealth Bank CEO Matt Comyn, who wanted the broker remuneration changes the royal commission recommended, said Australia's largest bank supported the inquiry's 76 recommendations.

"We will implement as many as we can as quickly as we can," Mr Comyn said.

"I recognise there's a lot of work to do and I'm absolutely committed to getting on with it."

Australian Associated Press