July 2028. That is when National plans to make KiwiSaver contributions compulsory for every working New Zealander. No more opt-outs, no more contribution holidays for the ~36.5% of earners currently not participating.
The current system is voluntary: 3.39 million Kiwis (63.5% of the population) are members with $123.1 billion under management as of March 2025. But the remaining third, disproportionately low-income workers and self-employed, have no retirement savings beyond NZ Super.
What the proposal means for your paycheck
Under the proposed 10% combined rate (5% employee / 5% employer):
- A $75,000 earner currently contributing 3%: take-home drops by $1,500/year
- Same earner's KiwiSaver grows by an extra $2,550/year (because employer match doubles)
- Over 30 years at 6% returns: the extra contributions create ~$215,000 more in retirement wealth
The total remuneration ban
Finance Minister Nicola Willis signaled a ban on "total remuneration packaging". The practice where employers absorb their KiwiSaver match into the advertised salary rather than paying it on top. Under the new rules, the employer contribution must be additional to the agreed gross salary. This alone increases real employer costs by 2-5% of payroll.
The progressive contribution path
National's full plan phases in gradually:
- July 2028: Compulsory participation (minimum rates)
- 2030: Default rates rise to 8% combined (4%/4%)
- 2032: Default rates reach 12% combined (6%/6%)
Employers will absorb the largest payroll cost increase in NZ history. Employees gain dramatically larger retirement balances but see smaller paychecks during the transition.
