To boost New Zealand's ability to fight inflation Auckland University's Tim Hazledine suggests broadening the Commerce Commission's powers, looking at extending the Pharmac concept, and cutting Goods & Services Tax (GST) to 10%.

Hazledine, Emeritus Professor of Economics at the University of Auckland, discusses this and more in the latest episode of interest.co.nz's Of Interest podcast.

Following Thursday's Consumers Price Index (CPI) release from Statistics NZ, Hazledine's assessment is the inflation tide is going out.

"It's receding, which is good. The question is whether it would've gone out anyway or whether King Canute in the Reserve Bank had anything to do with it," says Hazledine.

His key evidence for improvement is the 1.2% March quarter CPI figure, down from 1.8% in the March quarter last year.

"That's the indicator that you really should be interested in and that's encouraging."

Nonetheless Hazledine says there are signs a recession is going to happen, and suggests we ought to be looking at policy instruments to support the Reserve Bank, which has "a monopoly on inflation fighting almost by statute."

This includes expanding the Commerce Commission's mandate so it becomes a price watch commission, potentially even with a mandate to roll back price increases if they think they're not justified.

"They really have to be finding out about prices everywhere and investigating costs, investigating pricing practices," says Hazledine.

He also promotes the concept of tripartite pay talks, seen in parts of Europe, between the Government, unions and employer groups, exploring an extension of the Pharmac model to source other products and services at lower prices from international suppliers, and reducing GST to 10% from 15%.

"That [a GST cut] would immediately cut consumer prices...The biggest single beneficiary from inflation in New Zealand is the Government."

You can find all episodes of the Of Interest podcast here.