KiwiSaver for Kids — Should You Enrol Your Child?

KiwiSaver isn’t just for adults. Children can be enrolled in a KiwiSaver scheme from birth — but the rules are different from adults, and there are real trade-offs worth thinking through before you open an account.

Can Children Join KiwiSaver?

Yes. Any New Zealand citizen or permanent resident who is ordinarily resident in New Zealand can join KiwiSaver, regardless of age. There is no minimum age.

However, children cannot enrol themselves. A parent or guardian must:

1. Choose a KiwiSaver provider
2. Complete an enrolment form on the child’s behalf
3. Sign as the account holder until the child turns 16 (at which point they can manage the account themselves)

Children are not automatically enrolled — auto-enrolment only applies when someone starts employment.

What Are the Rules for Under-18s?

No Employer Contributions

Because children aren’t in paid employment, they won’t receive employer contributions. This removes one of KiwiSaver’s biggest advantages — the free employer top-up. This is a meaningful consideration: for adult workers, employer contributions effectively add 3% of gross pay to their balance for free.

If a teenager aged 16–18 has a part-time job (retail, hospitality, etc.) and is enrolled in KiwiSaver, they will receive employer contributions on those wages — and it may be worth enrolment for this reason alone.

The Member Tax Credit — Does It Apply to Kids?

Yes — the MTC applies to any KiwiSaver member, including children, if contributions are made to their account.

• Maximum MTC: $521.43 per year
• To receive the full MTC, you need to contribute at least $1,042.86 per year to the account (approximately $20.06 per week)
• The KiwiSaver year runs from 1 July to 30 June

So if you contribute $1,042.86 or more to your child’s KiwiSaver in a year, IRD will add $521.43 — an immediate 50% return on that portion of the contribution.

This makes KiwiSaver for kids a compelling savings vehicle purely on the MTC alone, particularly for a growth-oriented investor with an 18+ year horizon.

What Fund Type Should You Choose for a Child?

With 18–65+ years until the child can withdraw (at age 65, or when they meet a qualifying event), the investment horizon is extremely long. The appropriate fund for most children is:

• Growth or aggressive — highest risk, but risk is very manageable over 50+ years
• Avoid conservative or cash funds — these are designed to preserve capital over short periods, not to maximise returns over decades

The difference between a growth fund (historical ~7–9% p.a. long-run) and a conservative fund (~3–5%) compounded over 50 years is enormous. A $1,042.86/year contribution from birth to age 18 in a growth fund could accumulate far more than the same in a conservative fund by retirement.

Review the fund type when the child reaches their 20s and 30s — they may want to adjust as their own circumstances and risk tolerance become clearer.

Choosing a Provider

Since the child won’t receive employer contributions, fees matter more — the entire balance will come from voluntary contributions and MTC, so high fees will drag performance significantly over decades.

Good options to consider for children:

Low-cost, passively managed growth funds are generally the best choice for a 50-year time horizon.

See the best KiwiSaver providers comparison and individual reviews such as Simplicity and Kernel for full details.

Trade-offs and Considerations

Lock-in

KiwiSaver is locked in until age 65 (with limited exceptions — first home withdrawal, hardship, serious illness, death). If your child might need this money earlier — for education, starting a business, or other life events — KiwiSaver is not the right vehicle.

Alternative options to consider alongside or instead of KiwiSaver:

• A children’s savings account or PIE fund (Simplicity, InvestNow, Kernel all offer non-KiwiSaver PIE funds)
• A Sharesies or InvestNow investment account set up for a child (no lock-in)
• A term deposit in the child’s name

Who Owns the Account?

The KiwiSaver account belongs to the child, not the parent. Once the child turns 16 and especially once they turn 18, they take full control. You cannot withdraw or redirect the money.

What Happens at Age 18?

When the child turns 18, they will be automatically enrolled if they start a new job. If they’re already in KiwiSaver, contributions continue on the same terms — no restart needed. Their employer will begin making contributions once they enter paid employment.

Is It Worth It?

Yes, in most cases — primarily because of the Member Tax Credit. Contributing $1,042.86 per year and receiving $521.43 from IRD is one of the best risk-free returns available in New Zealand. Over 18 years of childhood, that’s up to $9,385.74 in MTC alone (at current rates).

However:

• If the family can’t afford to lock away $1,042.86 per year, a non-KiwiSaver children’s investment account is better than a KiwiSaver with small contributions (due to fixed admin fees)
• If the child may need the money before 65, keep it outside KiwiSaver
• The MTC is the main financial argument for enrolment — don’t overlook it

How to Enrol Your Child

1. Choose a KiwiSaver provider (see the provider comparison guide)
2. Download or complete the enrolment form online — select “non-employee member” or “voluntary member”
3. Provide the child’s IRD number (children should have one; if not, apply to IRD)
4. Set up a regular voluntary contribution — even $20–$25/week covers the full MTC threshold

What to Read Next

• KiwiSaver for Students
• KiwiSaver in Your 20s
• How KiwiSaver Works
• Best KiwiSaver Providers NZ
• KiwiSaver Fund Types Explained