Protecting Te Tiriti · Evidence Series · Part 07
What does “entrenchment” legally mean?
In New Zealand law, entrenchment is primarily a rule about how a protected provision may be amended or repealed. It can require a supermajority of MPs or a referendum instead of an ordinary parliamentary majority. That is real constitutional protection, but it is not automatically the same thing as making a provision supreme, immutable, or legally superior to Parliament.
Electoral Act 1993Standing OrdersParliamentary PracticeCabinet Manual
This part asks what entrenchment means under the present New Zealand constitutional system. It does not yet decide whether Te Tiriti should be entrenched. Before that political question can be answered, the legal mechanism and its limits have to be identified.
1. Ordinary legislation normally changes by ordinary majority
New Zealand operates under parliamentary sovereignty. Most Acts of Parliament can be amended or repealed by later Acts passed through the ordinary legislative process. A constitutional subject is not automatically entrenched merely because it is important.
The Cabinet Manual itself distinguishes the small group of specially protected electoral rules from other constitutional statutes that can be changed through ordinary legislation.
2. Entrenchment changes the amendment rule
New Zealand Parliament defines entrenchment as protecting a provision by requiring more than the usual majority for amendment or repeal. The clearest current model is section 268 of the Electoral Act 1993.
That section identifies a group of “reserved provisions”. They deal with matters including the term of Parliament, the Representation Commission, electoral districts, the voting age and the method of voting.
A proposal to amend or repeal one of those reserved provisions must either:
| Route | Requirement | Legal function |
|---|---|---|
| Supermajority | 75% of all members of the House of Representatives | Prevents an ordinary bare parliamentary majority from directly changing the protected provision. |
| Referendum | A majority of valid votes cast at a poll of electors | Allows the protected provision to be changed through direct electoral approval instead of the 75% parliamentary route. |
Entrenchment is a manner-and-form restriction. It tells Parliament that a particular change must be made through a special procedure.
3. The protection itself has to win the special majority
Standing Order 270 now controls proposals for legislative entrenchment. A proposal that would require more than an ordinary majority for future amendment must itself obtain the same special majority when it is adopted.
So Parliament cannot ordinarily impose a 75% amendment threshold today using only 51% support. A proposed 75% lock must itself obtain 75% support at the relevant stage.
The current Standing Orders also require prior select-committee scrutiny of an entrenchment proposal and prevent such a proposal being considered in a committee of the whole House under urgency.
Entrenchment is supposed to reflect broad constitutional agreement, not allow a temporary majority to make its own policy unusually difficult for future Parliaments to change.
4. New Zealand's present entrenchment is only “single” entrenchment
This is the critical limitation. Parliamentary Practice records that the Electoral Act's reserved provisions are not doubly entrenched. Section 268 protects the listed provisions, but section 268 itself is not one of the reserved provisions.
In theory, a future parliamentary majority could therefore try to repeal or weaken the protective machinery first using ordinary legislation, then alter the formerly protected provision.
Parliamentary Practice says using that route to circumvent the reserved provisions would be constitutionally improper and arguably breach constitutional convention. But the fact that the route exists shows the difference between single entrenchment and genuinely self-protecting higher law.
Single entrenchment
Provision A is protected by provision B, but provision B is not itself protected by the same special amendment rule.
Double entrenchment
The protection clause is itself protected, making it harder to remove the special amendment rule before changing the substantive provision.
5. A referendum is not automatically permanent protection either
Parliamentary Practice distinguishes between a referendum result and continuing legislative entrenchment. A referendum may trigger a legal change, but that does not by itself prevent a later Parliament from amending or repealing the resulting law.
For continuing legal protection, the law itself needs an entrenched amendment rule or some other constitutional mechanism.
“The people voted for it” and “future Parliaments are legally restricted from changing it” are different propositions.
6. Judicial enforcement is not completely settled
Entrenchment raises a further constitutional question: what happens if Parliament purports to pass a law without complying with a legally required special procedure?
The current edition of Parliamentary Practice in New Zealand says the possible judicial enforcement of manner-and-form requirements remains an open question. It records recent indications that courts could potentially exercise a role where a statute was enacted without satisfying a required constitutional procedure, but it does not describe the issue as finally settled.
It also records doubt about whether courts would enforce entrenchment aimed merely at substantive public-policy settings rather than rules serving a necessary constitutional purpose.
Strongest footing
Entrenchment of fundamental democratic machinery, such as core electoral rules, has the clearest constitutional pedigree.
More contested footing
Entrenchment of ordinary substantive policy may have weaker constitutional justification and uncertain judicial enforceability.
7. Te Tiriti is not currently one of the Electoral Act's reserved provisions
Section 268's current list does not include Te Tiriti, the Treaty of Waitangi Act 1975, Treaty principles, the Waitangi Tribunal, or the Cabinet Manual's description of Te Tiriti as a founding document of government.
That means those Treaty-related legal mechanisms do not currently enjoy the same statutory 75%-or-referendum protection as the listed reserved electoral provisions.
Some Treaty provisions may nevertheless be politically difficult to alter and constitutionally important. But political durability, constitutional significance and legal entrenchment are different categories.
8. “Entrench Te Tiriti” is not yet a complete legal proposal
Before such a proposal can be evaluated, at least five drafting questions must be answered:
| Question | Why it matters |
|---|---|
| What exactly is entrenched? | The Māori text, both Treaty texts, Treaty principles, a statutory recognition clause, Tribunal jurisdiction, or an entirely new constitutional provision would produce different legal effects. |
| What amendment threshold applies? | 75%, another parliamentary supermajority, a referendum, consent of another constitutional actor, or a combination? |
| Is the protection itself entrenched? | Without double entrenchment, a future Parliament may theoretically attack the lock before the protected provision. |
| Who interprets the entrenched text? | Entrenchment may make amendment harder while leaving interpretive authority with the existing courts, Parliament or another body. |
| What happens if legislation conflicts with it? | A higher amendment threshold is not automatically a power for courts to invalidate inconsistent legislation. |
9. Entrenchment can protect a rule without changing the source of sovereignty
This is the constitutional distinction that matters most for this series. A Parliament can entrench a provision within the parliamentary legal order. That can make unilateral amendment materially harder. But the act of entrenching something does not, by itself, answer where ultimate constitutional authority comes from.
For example, Parliament could theoretically enact a specially protected statutory Treaty clause. That may provide a stronger shield against ordinary repeal. Yet unless the constitutional design says otherwise, the text is still being given domestic legal form by Parliament and interpreted through institutions of that legal order.
Does entrenchment merely make Parliament's own Treaty rule harder for Parliament to change, or does it recognise an authority that exists independently of Parliament and cannot be altered without the consent of the other Treaty party?
10. The finding for this series
The evidence supports a precise conclusion: entrenchment in New Zealand is principally procedural protection against ordinary amendment or repeal. The current statutory model uses a 75% parliamentary majority or referendum for a limited group of electoral provisions. Those protections are constitutionally significant but not doubly entrenched, and the full extent of judicial enforcement of manner-and-form requirements remains unsettled.
Therefore, saying “entrench Te Tiriti” does not yet tell us the constitutional effect. The proposal must identify the protected text, the amendment rule, the interpreter, the consequence of inconsistency, and whether the protective mechanism itself can be removed.
Part 07 establishes that entrenchment can strengthen a legal shield without necessarily altering the constitutional architecture underneath it. The next audit question is therefore unavoidable: if Te Tiriti were entrenched, inside whose constitution would it be entrenched?
Primary and official sources
Electoral Act 1993, s 268 — reserved provisions and 75% / referendum rule ↗
Standing Order 270 — proposals for entrenchment ↗
Parliamentary Practice — manner and form, single entrenchment and judicial enforcement ↗
Parliamentary Practice — proposals for entrenchment ↗
Parliamentary Practice — referendums and continuing legal effect ↗
Cabinet Manual — entrenched electoral provisions and constitutional change ↗