National has committed a future National-led government to three fiscal targets it is calling the Budget Responsibility Rules, and has dared Labour to sign up to the same numbers or explain to voters why it will not.
Prime Minister Christopher Luxon and Finance Minister Nicola Willis, who is also National’s finance spokesperson for the campaign, released the rules on Saturday. They commit the party to returning the Government’s books to an operating surplus in the 2028/29 financial year, to pushing net core Crown debt below 40 per cent of gross domestic product, and to bringing core Crown expenditure down to 30 per cent of GDP.
Not one of the three targets is new. All of them already sit inside the fiscal strategy the Government published alongside Budget 2026 in May. What has changed is the packaging. By lifting the targets out of a Treasury document and turning them into a named campaign promise, National is inviting voters to treat them as a test that any party seeking the Treasury benches should be willing to sit.
Willis said the point of the rules was to build a buffer before the next shock arrives rather than after it. “The only way to be ready for the next crisis is to get our books in order now, while conditions allow it,” she said. She also framed the targets as a route to household incomes rather than an accounting exercise, saying the rules were “about more than just preparing for the next crisis” and were “also about building a stronger economy where New Zealanders have more jobs and opportunities, and wages rise faster than prices so that life is more affordable”.
The challenge to the Opposition was explicit. “The challenge that should be put to Labour is whether it will commit to the same Budget Responsibility Rules that National is committing to – and if not, why not?” Willis said, in comments reported by the New Zealand Herald.
There is a certain amount of history in the name. The phrase Budget Responsibility Rules was coined not by National but by Labour and the Greens, who published a joint set of five rules in March 2017 under then finance spokespeople Grant Robertson and James Shaw. That document was an explicit attempt to neutralise the charge that a Labour-Green government could not be trusted with money, and it worked well enough that Labour campaigned on it and governed under it until the rules were loosened in 2019.
The numbers, though, have moved a long way. The 2017 rules aimed to reduce net core Crown debt to 20 per cent of GDP. National’s 2026 version sets the ceiling at 40 per cent, double the older figure, against broadly the same family of debt measure. The spending rule has survived almost unchanged, with both versions holding core Crown expenses at or under 30 per cent of GDP. The gap between the two debt figures is essentially the story of the intervening decade, in which the Crown borrowed heavily through the pandemic and has not yet unwound it. For scale, the last government to get net core Crown debt near zero was the Clark and Cullen one, which banked nine consecutive surpluses between 2000 and 2008.
The debt measure itself has been a political football. In 2022 the then Labour government switched the headline indicator to a broader net debt figure that counted the assets of the New Zealand Superannuation Fund, which had the effect of producing a much smaller number. Willis reversed that in 2024, reverting to the older and narrower net core Crown debt definition on the argument that the broader measure swung too much with markets to work as a long-run anchor. Anyone comparing debt promises across elections needs to check which yardstick is being used.
On the current forecasts, National is promising to reach two targets it has not yet reached. Treasury’s Budget update in May put net core Crown debt peaking at 46.1 per cent of GDP in 2027/28, above the 40 per cent ceiling, before easing. Core Crown expenses sat at 32.6 per cent of GDP in 2024/25 and are forecast to hold there through 2026/27 before drifting down to about 30.3 per cent by 2029/30. For scale, the same measure was 28.0 per cent in 2018/19, before the pandemic. The forecast surplus of about $2.6 billion in 2028/29 was itself an improvement on the December forecast, which had the books still in deficit that year.
What the rules are not is law. The Public Finance Act already requires any government to publish its fiscal objectives and to explain itself when it departs from the principles of responsible fiscal management, but it does not fix the numbers. Budget Responsibility Rules are a political undertaking, enforced by the embarrassment of breaking them, which is exactly what happened to the last set. That is worth remembering when any party offers a figure for a year that falls beyond the term it is asking voters to grant.
Labour spent the same morning on different ground, releasing small business policy including a target for government contracts. Finance spokesperson Barbara Edmonds has so far kept her own fiscal numbers close. In November 2025 she declined to name a preferred debt cap or surplus date, saying the detail would follow Budget 2026. That budget has now been and gone, which is precisely the opening National is trying to use.
Voters go to the polls on Saturday 7 November. If you want to see how the parties line up on tax, spending and the rest before then, our voting tool lets you compare their positions side by side.
Do fiscal rules change how you vote, or do you treat them as campaign furniture? Tell us what you think in the comments below.
This article was written by AI, briefed to report the facts, hopefully without some of the bias people bring to the job 🙂
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