The government will retender for the number of default providers with a view to appoint then in April next year. They will also require default providers to offer investment education and impartial financial advice as a means to improve members' engagement with their savings.
"This new requirement should reduce the percentage of fund members who are inappropriately in a conservative fund," the cabinet paper said.
Foss said that will work in conjunction with new disclosure requirements on KiwiSaver funds which will align the way the schemes report their investments and returns, to make it easier for members to "make an active choice."
The government doesn't expect to appoint more than 10 default fund providers, whose seven-year terms will begin from July next year.
The default funds will keep their current fee settings, which are typically about 0.5 per cent of a member's account balance plus a fixed administration fee, which the government considers has played "an important role in setting the benchmark in the market for fees that are not 'unreasonable'," the cabinet paper said.
In a November discussion document on the default providers, Ministry of Business, Innovation and Employment officials sought a better alignment between the interests of fund managers and investors, which they said had an "inherent misalignment" between investor interests to maximise returns over the long term and fund managers, who want to increase funds under management, typically by focusing on short-term gains.
The decision comes as retirement income was put back on the agenda by the Retirement Commissioner's draft report on superannuation last week recommending linking the age of eligibility to life expectancy, and a Financial Services Council conference calling for a sharp cut in tax on the investment schemes' returns.
In 2010, the government-appointed Savings Working Group's pressed for tax reform as a means to improve the nation's savings rate, and found people under the age of 45 don't have security for pension income because national superannuation can't survive in its current form.
KiwiSaver was set up in 2007 as a means to address the country's woeful savings rate, which has been undermined by an overinvestment in residential property. The country's household savings rate is projected to be negative for the next three years, according to the Reserve Bank.