Jurisdictional error 

Jurisdictional error is the concept around which Australian judicial review doctrine is organised. It asks whether a decision-maker has stepped outside the boundary of the power Parliament actually conferred, rather than merely making a mistake within that boundary. Understanding what makes an error jurisdictional — and what does not — is the single most important analytical skill in Australian judicial review.

Why jurisdictional error, rather than error on the face of the record

Older English administrative law drew a distinction between jurisdictional error and mere error of law on the face of the record: a court could quash a decision for the latter only if the error was apparent on the face of the formal record of proceedings, without needing to show the decision-maker had exceeded their authority. Australian law has not followed that approach as its central organising principle. Instead, Australian courts ask directly whether the error affected the decision-maker's authority to make the decision at all. If it did, the decision is not merely erroneous — it is legally no decision, and can be treated as invalid regardless of whether the error appears on the face of any record. This shift matters because it ties judicial review back to the constitutional idea that an executive decision-maker only ever has the power the law actually gives them; an error that takes the decision outside that power means there was, in law, no valid exercise of power at all.

What makes an error jurisdictional

There is no single closed definition, but Craig v South Australia (1995) 184 CLR 163¹ is the leading authority describing several recurring categories that illustrate the idea:

• Asking the wrong question. If a decision-maker misunderstands the legal test they must apply and answers a different question from the one the statute poses, the resulting decision is not really an answer to the statutory question and falls outside power.
• Failing to consider a relevant consideration. Where a statute, expressly or by implication, requires the decision-maker to take a particular matter into account, and the decision-maker fails to do so, the decision may be beyond power.
• Taking into account an irrelevant consideration. Correspondingly, if the decision-maker is influenced by a matter the statute (expressly or impliedly) does not permit to be taken into account, the decision may again be outside power.
• Denial of procedural fairness. A failure to afford the fair process the law requires can itself amount to jurisdictional error, because statutory decision-making powers are ordinarily understood as conditioned on being exercised fairly, so a decision made unfairly is treated as not having been validly made at all.
• Acting on no evidence, or misconstruing the statute conferring power, so that the decision-maker's understanding of their own function was legally wrong from the outset.

These categories are not a closed or mechanical checklist. They are different applications of a single underlying question: did this error mean the decision-maker was not properly exercising the power the statute actually gave them?

Not every legal error is jurisdictional

It remains possible for a decision-maker to make a legal error that is not jurisdictional — a mistake made while still acting within the authority the statute conferred. Distinguishing a jurisdictional error from a mere error within jurisdiction is often the hardest and most contestable step in a judicial review problem, and it depends heavily on the proper construction of the particular statute: what the statute, correctly interpreted, treats as essential to the valid exercise of the power in question.

Why this matters for privative clauses

A privative clause is a statutory provision that purports to prevent or limit judicial review of a decision — for example, by declaring a decision "final" or excluding named remedies. Because jurisdictional error means that, in law, there was no valid decision at all, a privative clause framed around protecting "decisions" made under the Act is generally read as protecting only decisions that are genuinely within power — it cannot, on ordinary principles of statutory construction, be read as authorising a decision-maker to exceed the very limits the statute itself imposes. For decisions by Commonwealth officers this reading is reinforced by the constitutional entrenchment of the High Court's jurisdiction under s 75(v)², which Parliament cannot remove by ordinary statute. The practical consequence is that a privative clause can validly narrow the grounds on which a decision may be challenged, but it cannot make a decision affected by jurisdictional error immune from judicial review altogether.

Applying this in a problem question

1. Identify the precise error alleged and locate exactly which step in the decision-making process it occurred at.
2. Ask whether the error goes to the decision-maker's authority to decide (jurisdictional) or is a mistake made while still acting within that authority.
3. Test the error against the recognised categories — wrong question, relevant/irrelevant considerations, procedural fairness, no evidence, misconstruction of power — without treating the list as exhaustive.
4. If a privative clause is in play, explain how it should be construed in light of the jurisdictional character of the error alleged.
5. State the consequence: a decision affected by jurisdictional error is treated as invalid, not merely voidable, and explain what remedy follows.