Will NZ Super Still Exist When You Retire? The Affordability Debate and Your Plan B (NZ)

NZ Super is one of the government's largest costs, and it is set to grow as the population ages. Here is what the affordability debate really says, what has actually changed, and how to build a retirement plan that does not depend on it.

NZ Super is the foundation almost every New Zealander retires on, and questions about whether it will last are reasonable rather than alarmist. This article explains what the affordability debate actually says, separates what has been proposed from what has been enacted, and looks at how to build a retirement plan that holds up even if the rules change.

TL;DR: NZ Super is one of the government's largest single costs, projected to rise from about 5.1% of GDP today to roughly 8% by 2065 as the 65+ population grows. ⁵⁸ The qualifying age stays at 65, with no legislated increase scheduled. ³ The sensible response is not to assume Super disappears, but to treat it as a base you top up yourself.

Is NZ Super financially sustainable as the population ages?

The honest answer is that NZ Super is affordable now and becomes more expensive over time, rather than that it suddenly stops being affordable on a particular date. The pressure is demographic. New Zealanders are living longer, and the large cohort born after the war is moving into retirement, so the number of people drawing Super grows faster than the working-age population paying tax to fund it.

The scale is significant. The number of New Zealanders aged 65 and over is projected to grow sharply over coming decades, on the order of 1.3 million or more by mid-century. ⁸ Because NZ Super is funded from general taxation each year, more recipients and a relatively smaller working-age base mean the cost rises as a share of the economy.

That is a real fiscal challenge, and it is also one that successive governments have managed without cutting the base payment. It is worth holding both ideas at once: the cost is rising, and NZ Super has remained one of the most stable parts of New Zealand's retirement system.

How much does NZ Super cost the country now and in future?

NZ Super is already one of the government's largest single expenditure items. Gross spending has sat at roughly 5.0 to 5.1% of GDP in the early 2020s, with appropriations around $16.6 billion in 2021 rising toward roughly $21 billion over the forecast horizon. ⁶

The Treasury's long-term modelling shows where that heads on current settings.

Figure: NZ Super cost and the ageing population trend. Modelled on the Treasury's 2021 Long-term Fiscal Statement (He Tirohanga Mokopuna) and Stats NZ national population projections. ⁵⁸ Projected NZ Super expenditure rises as a share of GDP alongside a growing 65+ population over coming decades. These are long-term projections based on current settings, not predictions; actual outcomes will differ as policy, the economy and demographics change.

A rise from about 5.1% to 8% of GDP is a meaningful increase, but it is gradual and it plays out over forty years. It is the kind of pressure that prompts policy debate, not the kind that forces an abrupt change. That distinction matters for how you plan.

Will the NZ Super age rise from 65 to 67?

This is the change people ask about most, and the current position is clear. The NZ Super qualifying age is 65, and there is no legislated increase scheduled. ³

Raising the age to 67 has been proposed many times, usually as a way to slow the cost growth above. But it is politically difficult, and the public response has been consistently cool. In the Retirement Commission's review, raising the age to 67 was ranked the worst of seven policy options by 61% of respondents, and the Commission recommends the qualifying age stay at 65. ⁷

One related change has happened, and it is easy to confuse with the age question. The residency requirement began rising from 10 years to 20 years from July 2024, phased in by birth date. ³ That affects how long you need to have lived in New Zealand to qualify, not the age at which you qualify. The age itself is unchanged.

What has actually been proposed versus enacted?

A lot of the worry around NZ Super comes from blurring the line between an idea floated in a report and a law that has passed. They are very different things. Here is where the main items stand as at the date of this article.

The pattern over the past few decades is that NZ Super's core, a flat payment from age 65 indexed to wages, has proved remarkably durable. Proposals to change it surface regularly and rarely become law. That is not a guarantee about the next forty years, but it is useful context against the louder "Super is doomed" framing.

Could NZ Super become means-tested one day?

Means-testing, where what you receive depends on your other income or assets, is one of the options that comes up in long-run discussions. It is not government policy, and there is no proposal currently before Parliament to introduce it.

It is worth understanding why universality has held. NZ Super's current design pays the same base rate to everyone who qualifies, regardless of savings, with the couple rate set so the combined after-tax payment equals 66% of the net average ordinary-time weekly wage, and the single-living-alone rate set near 40% of the average wage. ⁹ That simplicity is part of its political resilience: it is cheap to administer, hard to game, and does not penalise people for having saved.

The case people raise for some form of means-testing is the cost trend above. The case against is that it would, in effect, tax retirement saving, which cuts against the reason KiwiSaver exists. Both arguments get aired in reviews. Neither has produced a change in the law.

The planning takeaway is balanced rather than alarming. Means-testing is possible in principle over a long horizon, which is one more reason not to build a plan that assumes the full single or couple rate will always be there untouched. It is not a reason to assume your Super will vanish.

What does this uncertainty mean for your retirement plan?

The reliance figures are the reason this matters in practice. Around 40% of New Zealanders aged 65 and over have virtually no income besides NZ Super, and a further 20% have only a little more, so roughly 60% rely on it as their main or only income. ⁴ For those households, any change to the rules lands directly on their standard of living, with little room to absorb it.

That is the real lesson of the affordability debate. The risk for an individual is less "Super disappears" and more "Super changes at the margin", a later age, a tighter indexing rule, a residency tweak, and you have no buffer of your own to cushion it. The further away your retirement is, the more time there is for settings to shift.

The response is straightforward in principle. Treat NZ Super as a base layer you do not control, and build a second layer that you do. The bigger your own savings, the less any single policy change can hurt you.

How does building KiwiSaver protect you from policy change?

KiwiSaver is the most accessible way for most people to build that second layer, and it sits outside the political variables attached to NZ Super. Your KiwiSaver balance is your money in a fund; it does not depend on the qualifying age, the residency rule, or any future means test.

A few features make it well suited to the job:

• It compounds over time. The earlier and more consistently money goes in, the more the returns do the heavy lifting, which is exactly the lever you have when retirement is decades away.
• Employer and government contributions add to your own. If you are employed and contributing, your employer generally contributes too, and the annual government contribution adds more on top if you qualify. Settings here are set by the Government and change, so check current figures.
• You choose the fund. A growth-oriented fund may suit people with a long time horizon who can tolerate more short-term ups and downs, while a more conservative fund trades lower expected returns for steadier values. Returns are not guaranteed, and the value of a KiwiSaver fund can go down as well as up.

Real NZ providers span a wide range of fund types and fee levels, from lower-cost index-based options such as Simplicity and Kernel, to actively managed options such as Milford and Booster, to the large bank-run and specialist schemes. They differ on fees, fund choice and approach rather than being interchangeable, so comparing like-for-like matters. You can compare funds independently on Sorted's Smart Investor.

KiwiSaver alone is not always enough, particularly for higher-income households or anyone who started late, which is where additional managed-fund investing and, for many, mortgage-free home ownership come in. The principle is the same: the more you control, the less you depend on policy staying still.

How do you build a retirement plan that doesn't depend on Super?

A plan that survives policy change tends to share a few features. None of these are personalised advice; they are the general building blocks an adviser works through with you against your own numbers.

1. Know your gap. Work out what your target retirement lifestyle costs, then subtract NZ Super at today's rates as a base. What remains is the gap your own savings need to fund. Our guide on how much you need to retire in NZ and the retirement income gap walk through this.

2. Build the second layer deliberately. Use KiwiSaver as the core, check your contribution rate, fund type and PIR (Prescribed Investor Rate, the tax rate on your KiwiSaver earnings), and add other investing where it fits.

3. Stress-test against change. A robust plan still works if the qualifying age were higher, or if you funded the first couple of years of retirement yourself. Building in that margin is cheaper than discovering you needed it.

4. Account for your own situation. Self-employed people have no employer contributions and no automatic enrolment, so the discipline has to be deliberate; our guide on retirement planning with no employer covers that. People near 65 should check the current NZ Super rates and eligibility rules, including residency.

5. Review it regularly. Rules, rates and markets all move. A plan checked once and forgotten quietly drifts out of date, as the residency change and recent KiwiSaver adjustments show.

The aim is not to bet against NZ Super. It is to make sure your retirement does not stand or fall on a policy decision you have no control over.

Frequently asked questions

Will NZ Super still exist when I retire?

On current settings and political history, some form of NZ Super is very likely to still exist, but the details may change over a long horizon. The qualifying age is 65 with no legislated increase scheduled, ³ and the base payment has been one of the most durable parts of the system. The prudent approach is to treat it as a base you top up yourself rather than assume the full rate will always be there untouched.

Is NZ Super going to become unaffordable?

It is affordable now and becomes more expensive over time. Gross spending is projected to rise from about 5.1% of GDP today to roughly 8% by 2065 as the population ages, on current settings. ⁵ That is a gradual, decades-long increase that drives policy debate rather than a sudden funding cliff.

Will the NZ Super age rise to 67?

It has been proposed repeatedly but is not enacted; the qualifying age is 65 with no legislated increase scheduled. ³ In the Retirement Commission's review, raising the age to 67 was ranked the worst of seven options by 61% of respondents, and the Commission recommends keeping it at 65. ⁷

Could NZ Super be means-tested?

It is discussed in long-run policy reviews but is not government policy, and there is no proposal currently before Parliament to introduce it. NZ Super is currently a universal payment from age 65, set relative to the average wage. ⁹ Means-testing is possible in principle over a long horizon, which is one more reason to build your own savings alongside it.

How many New Zealanders rely on NZ Super?

Around 40% of people aged 65 and over have virtually no income besides NZ Super, and a further 20% have only a little more, so roughly 60% rely on it as their main or only income. ⁴ For those households there is little buffer to absorb any change in the rules.

What is the best way to not depend on NZ Super?

There is no single answer, because it depends on your income, age and goals. In general, building your own savings, often through KiwiSaver as a core, plus other investing and, for many, mortgage-free home ownership, reduces how much any policy change can affect you. Personalised advice works through what fits your circumstances.

This article is general information only and is not personalised financial advice. It does not take into account your particular financial situation, goals or needs. Before acting, consider whether it's right for you and seek advice tailored to your circumstances. KiwiSaver is a long-term savings scheme; government contributions, contribution rates, withdrawal rules and tax (PIR) settings are set by the Government and can change, so check current rules at ird.govt.nz, kiwisaver.govt.nz and sorted.org.nz. Returns are not guaranteed; the value of investments can go down as well as up and you may get back less than you invested, and past performance is not a reliable indicator of future performance. NZ Super rates, the qualifying age and residency rules are set by the Government and can change. Figures are correct as at 21 February 2025. Craig Smith Business Services Ltd (FSP712931), trading as Smiths Financial, holds a Class 2 licence issued by the Financial Markets Authority to provide financial advice on personal risk insurance, health insurance, general insurance, KiwiSaver and managed funds, and is a member of the Financial Dispute Resolution Service (FDRS), a free and independent dispute resolution scheme. Written by Henry Smith, Financial Adviser; reviewed by Craig Smith, Principal Adviser. Last reviewed 21 February 2025.