The Finance Minister is hopeful she can bring more competition to the supermarket sector. 

The Government's seeking advice on breaking up the duopoly, possibly separating their retail and wholesale arms.

Nicola Willis says New Zealand currently has one of the least competitive grocery markets in the world - and Kiwis are paying more at the checkout as a result.

"What I want to achieve is a properly competitive market, to put downward pressure on prices, to motivate innovation and to ensure that shoppers get more choices."

LISTEN ABOVE