The legislation meant to protect investor confidence undermined it instead

A cure that may have caused the disease

When the Government pushed through legislation in August 2026 to halt Mike Smith’s landmark climate tort case against Fonterra, Z Energy, Genesis and four other major emitters, the stated justification was protecting business and investor confidence. Official documents released to the NZ Herald tell a more awkward story. Officials warned that premature intervention to protect high-emitting corporates could itself damage confidence to invest in New Zealand.

That is the contradiction at the heart of this. The Government reached for a remedy against sovereign risk that its own advisers said could manufacture some.

Justice Minister Paul Goldsmith defended the outcome, arguing “the courts are not the right place to resolve claims of harm from climate change, and tort law is not well-suited to respond to a problem like climate change”. That is a defensible policy view. What it does not answer is why the Government acted against advice, on a problem its officials could not find evidence for.

The evidence they couldn’t find

The Regulatory Impact Statement was blunt. Officials concluded the problem definition, the Government’s concern about litigation harming business confidence, rested on an assumption that had not been adequately tested. The panel noted a “lack of any business perspective” meant the underlying question had not been properly examined.

More pointedly, the RIS stated officials had “not identified any evidence that the ongoing court proceedings have had a measurable impact on business confidence”. Ministry of Justice officials recommended the status quo, saying it would be “premature to consider policy reform while relevant court proceedings are still underway”.

The Government’s own draft Cabinet paper from March 2026 conceded a statutory bar could have the “longer-term, unintended effect of decreasing certainty in the law”, even as ministers publicly sold the change as a certainty measure. Goldsmith’s response was that “it is for the elected Government to determine how it moves forward”. True enough. But when you legislate against advice, the burden of proof shifts to you, and here there was no proof to shift.

The lobbying trail that should worry investors

The backstory is what turns a policy disagreement into a governance problem. Around June 2024, a member of Fonterra’s government affairs team provided a briefing note to Matt Burgess, then chief policy advisor in the Prime Minister’s office. The note was emailed to Burgess’s personal address. It argued Smith’s case created “material sovereign risk and significant uncertainty for the international investment community” and proposed specific wording for a statutory amendment.

That wording was substantially reflected in the law that eventually passed. When an OIA request sought the document, the PM’s office said it had no record. In July 2026, Chief Ombudsman John Allen ruled the office had unreasonably breached the OIA, finding it “surprising” Burgess could not recall the documents’ fate and warning of the “particularly concerning” possibility that government business was “routinely flowing through personal email accounts”. Luxon’s own spokesperson conceded “using private email to share official information undermines transparency and public trust”.

Sophisticated capital does not only price litigation risk. It prices rule-of-law quality. Retrospective legislation drafted to corporate specifications, routed through private email, and passed against official advice is precisely the governance signal that raises a country’s risk premium.

The billions on both sides of the ledger

The defendants had a headline number. Modelling they commissioned in November 2025 using the Climate Change Commission’s C-PLAN tool projected that broad cessation orders could cut GDP by $112.6 billion over 2028 to 2032, more than a quarter of New Zealand’s 2024 output. But those figures assumed immediate net-zero cessation orders, the most extreme remedy imaginable, one no court had signalled it would grant. Critics called the claims “hyperbolic”.

University of Auckland academics Jane Kelsey and Fernando Hernandez argued honesty required counting both columns: “the modelled cost of a remedy that may never be ordered, against the real and present value of preferential trade access that the bill puts at risk”. The University’s own analysis warned that “a government that legislates immunity for its largest emitters fails its courts and communities and jeopardises its trade deals”.

What this leaves behind

There is a legitimate case that tort law is a clumsy instrument for climate policy. But that is not the case the Government ran, or the way it ran it. It legislated to fix a confidence problem its officials could not detect, using text a defendant supplied, through channels that breached the OIA, timed to land two days before the Regulatory Standards Act’s scrutiny provisions took effect.

The lasting lesson for investors is not that New Zealand blocked a climate case. It is that a well-connected corporate obtained retrospective legislative protection when the courts would not oblige. For anyone weighing capital allocation, that is the more expensive precedent, and it is now on the books.

Sources

• Officials warned intervention in Fonterra climate case could hurt investor confidence (2026-09-11)
• Officials told Government not to intervene in climate court case (2026-09-11)
• Officials told government not to intervene in a climate court case (2026-05-27)
• Missing climate briefing note: Who knew what, and when? (2026-06-04)
• PM’s office breached OIA over climate note – Ombudsman (2026-07-01)
• Fonterra legal case doc sent to private email of Luxon’s former staffer (2026-06-02)
• Economic Impact Assessment of Smith v Fonterra (2025-11-17)
• Emitters’ claims that court case would shut them down are ‘hyperbolic’
• It’s not climate lawsuits that will cost NZ exporters billions; it’s the shortsighted bet to ban them (2026-07-17)
• Banning climate lawsuits could risk billions – University of Auckland (2026-07-22)