Why KiwiSaver was set up
New Zealand already had a state pension. NZ Super is paid to almost everyone from age 65, funded from taxes, and it pays the same amount whether you saved during your working life or not.
The problem was that NZ Super was never designed to fund the retirement most people picture. By the early 2000s New Zealand had one of the lowest household savings rates in the developed world, most workers had no workplace savings scheme at all, and household wealth was heavily tied up in property. At the same time the population was ageing, which meant the cost of NZ Super was only going to rise.
KiwiSaver was the response. It was announced in the 2005 Budget by then Finance Minister Michael Cullen, passed into law as the KiwiSaver Act 2006, and opened to members on 1 July 2007.
How it was designed
The aim was to get people saving without making it compulsory, so the scheme was built around a few deliberate choices:
- You are enrolled automatically when you start a new job, and have to actively opt out. Most people stay in simply because they do not get around to leaving.
- Other people put money in alongside you. Employer contributions became compulsory in 2008, and the government adds its own contribution each year.
- The money is locked away until 65, with a limited set of exceptions such as buying your first home.
- Your savings are managed by private providers rather than a single government fund, so you choose who looks after your money and how it is invested.
How your money is invested
Once you're a member, you don't invest the money yourself. Your contributions, your employer's and the government's are paid into your account and automatically invested into whichever fund you hold with your provider — each payment buying into that fund at the current unit price.
Your provider then looks after the underlying investments — a mix of shares, bonds, property and cash that depends on the fund type you're in — and reinvests the returns, so your balance builds over time. You can log in to check your balance, but you never have to buy or sell anything yourself.
If you didn't choose a fund when you joined, you'll have been placed in a default fund, or one set by your age. It keeps investing every contribution automatically, which is convenient — but a default is rarely the best fit for everyone, so it's worth checking the fund you're in matches how long you have until you'll use the money.
How it has changed since 2007
KiwiSaver has been adjusted many times, usually by tightening the incentives:
- Members originally received a $1,000 kickstart from the government when they joined. This was scrapped in 2015.
- The annual government contribution was halved in 2011, and halved again from 1 July 2025 to a maximum of $260.72. An income limit of $180,000 was introduced at the same time, and 16 and 17 year olds became eligible.
- The minimum employee contribution rate started at 4%, dropped to 2% in 2009, rose to 3% in 2013, and is 3.5% from 1 April 2026 and 4% from 1 April 2028.
- Employer contributions started at 1% in 2008 and follow the same 3.5% and 4% steps.
Where it sits today
More than 3 million New Zealanders are now KiwiSaver members, and for many people it is the largest asset they own apart from a house.
It is still voluntary, and it still sits on top of NZ Super rather than replacing it. What the scheme does not decide for you is which provider you use, which fund you are in, or what rate you contribute at — and those choices make a considerable difference to what you end up with.