Budget 2026: How the boomer Budget is gobbling more of every tax dollar
Tuesday, 26 May 2026
ANALYSIS: One of the key megatrends facing New Zealand’s fiscal management is the nation’s large ‒ and growing ‒ boomer state.
This is one of the key pressures Finance Minister Nicola Willis will be dealing with in this Budget. The costs are largely set, relatively easy to project and, short of overturning the broad retirement policy settlement that has existed for a quarter century, difficult to significantly alter.
While the boomer bulge has been warned about for more than two decades ‒ even spurring Michael Cullen to create the New Zealand Superannuation Fund in 2001, with the first contributions beginning in 2003 ‒ it is now here. With every Budget, more money must be found to pay obligations promised as a basic right for nearly 50 years.
New Zealand’s population is ageing and a demographic wave that has been moving through the system for decades is now arriving at two costly destinations: NZ Superannuation and healthcare.
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This year, the number of New Zealanders claiming NZ Super ‒ the universal taxpayer-funded retirement scheme ‒ will likely hit one million for the first time.
In 2021 the Crown spent $16.5 billion on Super. In 2027 it will be $26.4b.
NZ Super, established by the Muldoon Government in 1977, is a pay-as-you-go system in which current taxpayers fund current retirees. It is set at two-thirds of average weekly earnings.
For a single retiree living alone, the gross payment is $1294.74 per fortnight, or about $1110 after tax.
For a couple, the payment is $984.28 each before tax, or about $854 each after tax ‒ a combined $1708 per fortnight.
New Zealanders qualify from the age of 65.
The cost of NZ Super in 2026 is expected to be about $24.7b ‒ more than 16% of forecast core Crown spending of $153b. By 2030, it is expected to rise to $30.8b against total spending of $167b.
The politics of it are relatively straightforward. New Zealand has few government incentives ‒ either sticks or carrots ‒ pushing people towards privately funding their own retirement. KiwiSaver has grown substantially but, to date, lacks both the contribution rates and favourable tax settings to be anything more than a modest add-on to NZ Super.
New Zealand’s system is nowhere near an Australian-style superannuation model, where 12% of pre-tax earnings paid by employers go into individual retirement accounts and where contributions and returns are taxed at 15%.
At the same time, NZ Super has become deeply embedded as a social right. People work hard, pay taxes and consider it their due. But those taxes are not salted away by the Government to cover future retirement costs. They are paid by current taxpayers to fund current retirees.
People are reliant on it, making any rapid change politically and practically difficult.
All of this means that by 2036, universal super is expected to consume more than 20 cents of every tax dollar raised by the Government.
The NZ Super Fund, designed as a repository for surpluses, arguably makes less sense in the current environment of persistent deficits.
While the fund is expected to begin making contributions from 2028, by 2040 it is forecast to cover just 3.3% of the annual cost of NZ Super, rising to 6.6% by 2060 and 12.7% by 2080.
It helps, but only at the margins. It does not arrive and suddenly absorb large chunks of the Government’s superannuation bill.
At the same time, the ratio of workers to retirees continues to decline. In the 1960s, there were seven workers for every retiree. Today there are about four. By 2065, that ratio is expected to fall to just two workers per retiree.
And that is only on the retirement side.
The other major area of fiscal pressure is healthcare. While estimates vary, it is generally accepted that 80% to 90% of a person’s lifetime healthcare costs are incurred in the final years of life.
In other words, as the population ages, healthcare spending rises sharply: more hospital time, more costly interventions and more chronic illness.
Health spending is forecast to rise from about $30b today to $34.5b by 2030.
So while Willis and the Government are trying to balance the books and reduce the Government share of the economy, it must also find money for these two large age-related spending pressures.
That inevitably squeezes the rest of the Budget.
Even the much-vaunted increase in defence spending is largely occurring through capital expenditure rather than core Crown operating spending. According to last year’s forecasts, defence spending is expected to average about $3.6b annually through to 2030, although those figures will be updated on Thursday.
All of this amounts to the key strategic challenge facing Willis ‒ and many of her successors. How does the Government pay for a sharp rise in age-related spending while the relative number of workers declines? And how does it still find money for priorities outside health and superannuation?
Under the current Government, that means more borrowing while also attempting to slow the rate of spending growth until economic growth helps return the books to balance.
Future governments may choose different paths: spending cuts, higher taxes or structural changes to retirement policy.
For now, the focus remains on reducing New Zealand’s structural deficit. In last year’s Budget, Willis reduced the Government subsidy into KiwiSaver while increasing default employee and employer contribution rates.
Nothing significant is expected in this area in the coming Budget, but the politics of retirement ‒ whether retirement savings or the settings of NZ Super itself ‒ appear increasingly likely to become an election issue.
It now appears plausible that compulsory KiwiSaver contributions could arrive within the next decade, while Prime Minister Christopher Luxon has indicated he is prepared to campaign on lifting the retirement age at the next election.
The main takeaway is relatively simple. More than a third of the Budget is spent on two areas with extremely high public support and little political appetite for cuts.
That means, in tighter fiscal times, the rest of the Budget has to absorb the pressure.
This year’s Budget will reveal how the Government has chosen to manage it.