A promise to increase Kiwisaver rates is being described as a fundamentally good move - even if there's more to do. 

National says it will lift default contributions to six percent by 2032 - matching Australia's 12-percent superannuation rate. 

Employer contributions would increase by half a percent each year - but not until 2029.

Milford Asset Management's KiwiSaver Head Murray Harris told Mike Hosking that although he backs the idea, 'we need to see what the long-term strategic plan for KiwiSaver is.'

LISTEN ABOVE