The Member for Tamworth used parliament last week to condemn Australia's big four banks for using the COVID-19 crisis as an excuse to slash costs.

"I don't think that's acceptable to us," he said.

Constituents have bombarded him with inquiries about reopening bank branches, he said.

He took their frustration to the floor of parliament.

"One thing that really annoys me is loyalty is a thing of the past," he told the Leader.

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"I'm a big believer in loyalty and many business owners, farmers and many others in our community have supported and been loyal to those big banks over many years. How about showing some reciprocation and being loyal back to the community, instead of cutting and running."

He told parliament that small businesses had been forced to store their daily takings, either on site or at home, waiting until the local bank's handful of opening days.

"What happens when the business owner goes down to their bank to deposit the daily takings and the size of their branch and number of tellers is so reduced that, in these times of COVID, they have to sit out on the street and wait for their number to be called? How is that providing safety for the business owner and security of their money?"

Mr Anderson's fiery address came during a debate brought on by neighbouring MP Adam Marshall, the Member for Northern Tablelands.

Mr Marshall introduced the motion, which condemned the National Australia Bank for refusing to commit to keeping its Uralla branch open, in July.

Within a day NAB announced a reopening date for the branch.

The MP told parliament it was like the "conversion on the road to Damascus".

Labor MPs and Member for Upper Hunter Michael Johnsen joined the chorus of condemnation in a bipartisan display of discontent on Thursday night.

Mr Anderson told the Leader it's "100 per cent time" for the big banks to return to normal opening hours.

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If they don't, he advised Tamworth residents to sign up to a smaller alternative banking institution, like a credit union, and vote with their feet.

NAB Executive Krissie Jones said the company had been forced to close about 70 branches in response to the COVID-19 pandemic, including Uralla's. The company has been "progressively reopening temporarily closed branches around the country," she said.

"More than 90 per cent of NAB's customer interactions are now taking place online, or by phone, and we will continue to provide the banking services our regional communities need, while also adapting to the way our customers choose to bank with us," she said.

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