Nu Tireni · The Nullity Audit · Part 06 · 1941–2026 · Deep Audit

What do modern New Zealand courts treat as settled — and what remains historically disputed?

The audit ends with a legal boundary, not a slogan. Modern New Zealand courts treat Parliament, the courts and the present constitutional order as authoritative. At the same time, they no longer accept Wi Parata’s denial of Māori law: Te Tiriti is constitutionally significant, tikanga is part of New Zealand law, and Māori customary rights may survive unless lawfully extinguished. Those propositions coexist because they answer different legal questions.

1. Start with the proposition modern courts no longer accept

Wi Parata treated Māori custom as incapable of supplying legally cognisable rights and described the Treaty, insofar as it purported to cede sovereignty, as a “simple nullity”. That reasoning does not represent modern New Zealand law.

Chief Justice Winkelmann stated in 2026 that the language of Treaty “legal nullity” is no longer used. Modern courts recognise tikanga-based rights and customary interests, and the Supreme Court has confirmed that tikanga has been and will continue to be recognised in the development of New Zealand common law where relevant.

2. But Te Tiriti is still not a free-standing power to invalidate legislation

The Privy Council’s 1941 decision in Te Heuheu Tūkino v Aotea District Māori Land Board remains authority for the proposition that Te Tiriti is not directly enforceable in New Zealand courts unless its relevant obligation has been incorporated into domestic law by statute.

That does not mean Te Tiriti is legally irrelevant. Modern courts describe it as a document of constitutional significance. Where Parliament expressly requires consistency with Treaty principles, or requires decision-makers to take Treaty obligations into account, those duties are justiciable. Courts also use Te Tiriti and its principles in statutory interpretation and administrative law where the legal context supports that use.

3. Parliament’s present authority is treated as a constitutional fact

The Courts of New Zealand state the orthodox position directly: Parliament is sovereign, can create, amend or repeal law, and New Zealand courts do not have power to invalidate primary legislation merely because it is inconsistent with constitutional principle.

The High Court has also repeatedly rejected attempts to use Māori sovereignty as a personal jurisdictional defence. In Brooker v Police, Mander J held that persons within New Zealand are subject to the jurisdiction of New Zealand courts and to laws enacted by Parliament. That line of authority does not depend on proving anew in each case what occurred in February or May 1840.

4. That domestic closure does not prove the historical cession

This is the distinction the entire series has been building toward. A court’s recognition of the present constitutional order is not the same evidential proposition as a finding that the February 1840 rangatira validly ceded their law-making sovereignty.

The Waitangi Tribunal’s Stage 1 Te Paparahi o Te Raki report is unusually explicit on this point. It found that the rangatira who signed at Waitangi, Waimate and Mangungu in February did not cede the authority to make and enforce law over their people and territories. But the Tribunal also said it was not deciding how or when the Crown acquired the sovereignty it exercises today.

5. Sovereignty did not automatically extinguish Māori property or customary law

Attorney-General v Ngāti Apa is decisive here. The Court of Appeal rejected the proposition that, on acquiring sovereignty, the Crown automatically acquired beneficial ownership of all New Zealand land. Māori customary property survived the change in sovereignty unless and until it was lawfully extinguished.

This is a profound limitation on the old Wi Parata approach. The Crown’s sovereignty and Māori customary rights are not treated as mutually exclusive concepts. Crown sovereignty supplies the legal order within which the courts operate; surviving customary rights can remain legally enforceable within that order.

6. Tikanga is not merely historical evidence — it is part of modern New Zealand law

In Ellis, the Supreme Court unanimously accepted that tikanga has been and will continue to be recognised in the development of the common law. The Court did not create a separate Māori court system outside New Zealand law; it recognised tikanga as a source relevant to the law’s development within the existing legal order.

The Chief Justice’s 2026 constitutional lecture describes the same trajectory: tikanga-based rights continue to be recognised in property law, public law, statutory interpretation and common-law development.

7. The 2026 cases show both the reach and the limit of that recognition

The Court of Appeal’s 2026 decision in Mercury NZ Ltd v Māori Land Court concerned Pouākani claims to tikanga rights in parts of the Waikato River bed and water. The Court treated customary and tikanga-based claims as serious legal claims, but held that the Māori Land Court lacked jurisdiction over some causes and that customary rights were not an exception to the indefeasibility of registered title under the Land Transfer regime.

The important lesson is structural. Recognition of tikanga or customary rights does not mean every claimed right defeats every statute, registered title or jurisdictional limit. The legal system asks what right is asserted, whether it survived, which court has jurisdiction, what statute governs, and whether Parliament has clearly altered or extinguished the right.

8. So where exactly is the surviving legal space?

It lies between two propositions that are often falsely treated as opposites:

The surviving space is therefore not a personal “opt out”. It is a field of legally cognisable rights and constitutional obligations inside the present legal order: customary title, tikanga, statutory Treaty protections, judicial review, Treaty settlements, Māori land law, and other causes where the law recognises continuing Māori rights or Crown obligations.

The law has closed the question “does Parliament bind me at all?” much more firmly than it has closed the questions “what Māori rights survived?” and “what obligations does the Crown still owe?”

9. The Nullity Audit therefore ends somewhere different from where Wi Parata began

Prendergast’s reasoning was that there had been no Māori body politic capable of ceding sovereignty. Modern law rejects the premise that Māori law and rights were legally nonexistent.

The Waitangi Tribunal instead finds that Te Raki rangatira possessed authority but did not cede it in February 1840. The Crown nevertheless proclaimed sovereignty, London approved and published the claim, imperial law erected governing institutions, Crown authority expanded, and the courts came to recognise the resulting constitutional order as authoritative.

That is the juridical bridge revealed by the audit. It is not a newly discovered deed of cession.

10. Final finding

We therefore should not state that “Prendergast was right” or that “the Treaty was legally nothing”. Nor does the evidence justify saying that historical non-cession automatically nullifies the present state.

The stronger and more defensible conclusion is narrower:

This is the point at which the next investigation should stop asking only “was sovereignty ceded?” and start asking a more precise constitutional question: if rangatiratanga was not extinguished merely by Crown sovereignty, what legal content does rangatiratanga still carry today, and through which present-day legal mechanisms can it actually be exercised?