KiwiSaver and Retirement

The single biggest change to KiwiSaver in years took effect on 1 April 2026, and many people did not notice. The default contribution rate rose from 3 per cent to 3.5 per cent for both employees and employers. If you were on the default, that happened automatically. You did not need to do anything, and you did not get a form to sign.

That matters because KiwiSaver is not really a retirement calculator problem. It is a handful of decisions made years apart: which fund you are in, what fees you pay, whether you withdraw for a first home, and when you stop working. Get those roughly right, and the balance mostly looks after itself.

We have pulled together what the rules actually say as at September 2026, including the parts that changed recently and the parts people get wrong. There is a second default increase coming on 1 April 2028, when the rate rises again to 4 per cent. Planning around that now is easier than reacting to it later.

How We Researched This Guide

We built this from Inland Revenue's published guidance, the Financial Markets Authority's fund categories and projection assumptions, Kainga Ora's first-home withdrawal rules, and the legislation itself, which is set out in full on legislation.govt.nz. We also used our KiwiSaver fund database, which is built from the Government's Disclose Register.

One thing surprised us. The highest five-year returns in our database come overwhelmingly from single-sector funds concentrated in United States shares, with risk indicators of 5 or 6. A five-year stretch that strongly favoured United States equities flatters exactly those funds. Comparing one of them with a diversified growth fund is not comparing like with like, and we have said so plainly rather than letting the table speak for itself.

ValueHub's Trusted Providers

We've researched the providers below — here are our picks for this category.

Simplicity
★ 4.9 ★★★★★ (592 Reviews)
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Simplicity is a nonprofit KiwiSaver and investment fund manager charging 0.25% p.a. across all six KiwiSaver funds. 100% owned by the Simplicity Foundation, a registered charity. Over 190,000 members. Seven rounds of fee cuts since launch in 2016. Fifteen percent of management fees donated to NZ charities. Founded by Sam Stubbs (ex-Tower Investments CEO, Goldman Sachs).

The Quick Summary (60-Second Version)

If you read nothing else, read this.

  • The default employee and employer rate is 3.5 per cent from 1 April 2026, rising to 4 per cent on 1 April 2028. Your options are 3.5, 4, 6, 8 or 10 per cent.
  • The government adds 25 cents for every dollar you contribute, up to $260.72 a year. To get the maximum, you need to put in at least $1,042.86 between 1 July and 30 June.
  • You can withdraw for a first home after 3 years of membership, but at least $1,000 must stay in the account, and you only get one bite.
  • Fees compound against you. The gap between 0.24 per cent and 1.30 per cent is about 1.06 percentage points per year on your whole balance.
  • KiwiSaver is locked in until 65, but you do not have to withdraw then. There is no deadline, and your balance stays invested until you tell your provider otherwise.
  • Self-employed people get no employer contribution, which is the single biggest difference. The government contribution is still available on the same terms.

What Actually Changed, and What It Costs You

The 1 April 2026 change was tidier than most. If you were on the default 3 per cent, your rate rose to 3.5 per cent and your employer's did too, with no action from either of you. If you were already contributing more than 3 per cent, your own rate did not move, but an employer sitting at 3 per cent still rose to 3.5 per cent. So a lot of people got a quiet pay rise into their KiwiSaver without lifting a finger.

One detail catches people out. The new rate applies to all pay days from 1 April. Even if a pay period covers time before and after that date, the whole contribution for that pay period is deducted at the new rate. There is no part-period apportionment.

Employer contributions are taxed under the employer superannuation contribution tax, and the rate depends on your total annual salary and wages plus gross employer contributions from the previous tax year. It runs from 10.5 per cent at the bottom to 39 per cent at the top. That is worth knowing, because it means the headline employer percentage is not quite what lands in your account.

Where the government contribution sits now

I need an appropriate superannuation image

Fund Choice, Fees, and the Decision That Moves the Needle

Most providers offer several very different funds under the same brand, which is why fund choice matters more than provider choice. Two people with the same balance at the same provider can end up with very different outcomes simply because one chose a conservative fund and the other chose a growth fund.

The FMA sorts funds into five categories based on how much they hold in growth assets, which include shares and property. Those go up and down more often than income assets like cash and bonds. The FMA's projection assumptions, after fees and tax, run from 1.5 per cent for defensive funds to 5.5 per cent for aggressive ones. These are planning assumptions, not promises.

Fund category Growth assets FMA projection assumption
Defensive 0 to 9.9 per cent 1.5 per cent
Conservative 10 to 34.9 per cent 2.5 per cent
Balanced 35 to 62.9 per cent 3.5 per cent
Growth 63 to 89.9 per cent 4.5 per cent
Aggressive 90 to 100 per cent 5.5 per cent

Default funds sit in the balanced category. If you are planning to withdraw soon, for example for a first home, that may not suit you, because a balanced fund can fall in value just before you need the money. A conservative or defensive fund is often a better home for money with a short timeframe.

Fees are the certain part

At 65, and Getting There From Here

The age of eligibility is currently 65. At that point, you can withdraw everything, and you contact your provider to arrange it. But there is no deadline. Your balance remains invested until you instruct your provider otherwise, and you can withdraw all of it, some of it, or none of it, or set up a regular withdrawal.

If you keep working past 65 and want deductions to stop, you complete a Non-deduction notice (KS51) and give it to your employer, who stops deductions from your next pay. Employer contributions are no longer compulsory after 65, and whether they continue depends on your employment contract. You are also no longer eligible for the government contribution once you turn 65.

NZ Super is the other half of the picture. It is not means-tested, and there is no contributions record. The rate depends only on who you live with and your tax code. From 1 April 2026, a single person living alone receives $647.37 a week before tax, which is $1,110.30 a fortnight after tax at the M tax code. A couple each receive $492.14 per week before tax, or $854.08 per fortnight after tax.

Before 65, the withdrawal rules

Switching, and when not to

Questions You Might Have

Do I have to withdraw my KiwiSaver at 65?

No. There is no deadline, and your balance stays invested until you tell your provider what you want. You can take all of it, part of it, or none of it, or set up regular withdrawals. Many people leave it invested and draw down as needed.

What happens if I am self-employed?

You are not automatically enrolled, so you have to join a scheme yourself. There is no employer contribution, which means you are missing the 3.5 per cent an employer would otherwise add. You still qualify for the government contribution on the same terms, provided your annual taxable income is $180,000 or less.

Can I reduce my contribution rate?

You can apply to Inland Revenue to temporarily reduce your rate to 3 per cent. Before 65, a savings suspension generally requires at least 12 months of membership and lasts between 3 and 12 months. Once it is in place, your employer is no longer required to contribute.

Should I switch to a conservative fund as I get older?

It depends on your timeframe, not your age. Money you will need within a few years is best suited to a conservative or defensive fund. Money you will not touch for 10 years or more generally suits growth or aggressive, provided you can ride out significant falls without switching. The most expensive behaviour is switching to conservative after a market fall.

Is my PIR still right in retirement?

Possibly not. Your prescribed investor rate depends on your income, and retirement often changes that. It is worth reviewing because the wrong rate means paying more tax on your fund's returns than necessary.

What Matters Most

The decisions that matter are few, and they are not complicated. Get into the right fund category for your timeframe, keep your fees low without sacrificing the asset mix, and make sure you contribute at least $1,042.86 each year so the government tops you up. Those three things do most of the work.

Everything else is detail. The default rate will rise to 4 per cent on 1 April 2028 whether you think about it or not. Your balance will do whatever markets do. What you control is the fund you are in, what you pay for it, and whether you panic at the wrong moment.

If you are within a few years of needing the money, for a house or for retirement, check what you are invested in. A balanced default fund is a sensible place to spend 30 years. It is a poor place to spend the 18 months before you need the cash.