Guide
KiwiSaver for children: is it worth signing them up?
Parents can enrol children in KiwiSaver from birth, and small regular contributions have an extraordinary amount of time to grow. But the money is locked in until 65 apart from a first home and limited exceptions — so it's worth understanding exactly what you're signing them up for.
Last checked October 2026
How enrolment works for under-18s
Children aren't auto-enrolled — a parent or legal guardian signs them up directly with a KiwiSaver provider. For children under 16, all legal guardians usually need to consent. From 16, the young person signs up themselves with one guardian's consent.
You'll choose a provider and fund at enrolment. There's no default scheme for children, so if you don't pick a fund, nothing happens — which makes the choice of provider and fund type the main decision.
What's changed for 16 and 17-year-olds
From 1 April 2026, 16 and 17-year-olds who are employed and contributing now receive the compulsory employer contribution — previously the match only started at 18. That makes a part-time job meaningfully more valuable for a teenager, because every dollar they contribute from wages now attracts employer money too.
From 1 July 2025, eligible 16 and 17-year-olds also receive the government contribution: 25 cents per dollar of their own contributions, up to $260.72 a year. They must mainly live in New Zealand and have annual taxable income of $180,000 or less. Joining or turning 16 partway through the KiwiSaver year reduces the maximum. Under-16s do not qualify.
The case for: time is the superpower
A dollar invested at age 5 has 60 years to compound before 65. At a 6% average annual return, $20 a week from birth grows to roughly $40,000 by age 18 — and if left untouched, that alone could compound to several hundred thousand by retirement without another cent being added.
KiwiSaver also builds the habit early. A teenager who watches their balance grow through their first job tends to stay engaged with it for life — and engagement is the single biggest driver of good KiwiSaver outcomes.
The case against: it's locked away
Money in a child's KiwiSaver can't be touched until 65, except for a first-home withdrawal, significant hardship, serious illness or permanent emigration. It can't help with university costs, a first car, or a gap year — the expenses that actually arrive in a young person's twenties.
If flexibility matters more than retirement saving, a regular investment fund in the child's name (or the parent's) keeps the money accessible. Many families do both: a small KiwiSaver contribution for the long game, and a flexible fund for everything before it.
Which fund type for a child?
With a 50-plus year horizon, most children can weather far more market ups and downs than an adult near retirement. That's the classic argument for a growth fund: short-term falls don't matter when the money won't be needed for decades.
The big exception is a first home. If the plan is to use KiwiSaver for a deposit in the next few years — say a 16-year-old who'll buy in their early twenties — a more conservative fund protects the balance as that goal gets close. The fund type should follow the goal, not just the age.
How much to contribute
There's no minimum for children — you set the amount with the provider, and you can change or pause it at any time. Common approaches are a small weekly automatic payment ($10–$20), or lump sums on birthdays.
Under-16s do not receive the government contribution, so there is no top-up threshold to aim for. From 16, eligible members can receive the full $260.72 with $1,042.86 of their own contributions between 1 July and 30 June if eligible for the whole year. Choose an affordable amount without taking money away from more flexible savings.
Fees matter more than usual
Children's balances are small, which makes fixed dollar fees disproportionately expensive. A $30-a-year membership fee is 3% of a $1,000 balance — enough to cancel out a year of returns in a mediocre market. Look for providers with low or no fixed fees on small balances, and check the total cost, not just the percentage fee.
What happens at 18
- The account stays with the same provider and fund — nothing resets.
- Government-contribution eligibility can already begin at 16; turning 18 does not restart it or increase the maximum.
- If they start work, they're auto-enrolled only if they aren't already a member — since they are, payroll deductions just begin at their chosen rate.
- It's a good moment to review the fund type together and hand over the login.