Enquiry or Inquiry NZ: Which Spelling Is Correct

If you’ve ever paused before typing “enquiry” or “inquiry” in an email in New Zealand, you’re not alone. New Zealand English follows the British convention: use enquiry for general requests and inquiry for formal investigations.

British English distinction: enquiry (general) / inquiry (formal) ·
American English: always inquiry ·
New Zealand preference: follows British English: formal inquiries, casual enquiries

Five key distinctions sum up the English‑speaking world’s approach to these two spellings. The pattern below shows the contrast between British, American, and New Zealand usage.

The implication: if you’re writing for a New Zealand audience, you can safely follow the British convention – and that means using enquiry for everyday questions and inquiry for anything official or investigative.

Is inquiry or enquiry correct?

General rule in British vs American English

• In British English, “enquiry” is the standard spelling for a routine question, while “inquiry” is reserved for formal investigations (Ginger Software (English language reference)).
• In American English, “inquiry” covers both meanings – there is no separate “enquiry” (Grammarly (writing guidance platform)).

When to use each spelling

• Use “enquiry” for any request that is casual, informational, or not legally binding (Office of the Auditor-General (NZ public sector audit body)).
• Use “inquiry” for official investigations, legal proceedings, or any process authorised under law (Department of the Prime Minister and Cabinet (NZ Cabinet Office)).

What this means: your choice signals the seriousness of the question. A casual “enquiry” invites a routine answer; an “inquiry” implies you expect an official response.

What does enquiry mean?

Definition of enquiry

Enquiry simply means a request for information or a question. It is derived from the Old French enquerre and entered English in the 14th century (Online Etymology Dictionary (linguistic reference)). In everyday use, it is the noun form of the verb “enquire”.

Synonyms and usage

• Synonyms: question, request, query, investigation (though the last overlaps with inquiry) (Cambridge Dictionary (lexicographic authority)).
• Common phrase: “Thank you for your enquiry” – used in customer service and professional emails across New Zealand (Office of the Auditor-General (NZ public sector audit body)).

The pattern: “enquiry” is your default word for any question that does not trigger a formal process. When in doubt, start with “enquiry”.

Do British say inquiry or enquiry?

British English usage

Yes, British speakers use both spellings, and the distinction is well established. The BBC style guide, for example, instructs writers to use “enquiry” for general requests and “inquiry” for official investigations (BBC Learning English (editorial authority)). This convention has been taught in UK schools for decades.

Formal vs informal contexts

• Informal: “I sent an enquiry about the course.”
• Formal: “The police launched an inquiry into the incident.”

The catch: many British people themselves are inconsistent, especially in email. But in official writing – government reports, legal documents, news articles – the split is observed (UK Parliament (legislative authority)).

Is it inquiry or enquiry in Ireland?

Irish English conventions

Irish English generally follows British spelling conventions, including the enquiry/inquiry distinction. The Irish government’s website uses “inquiry” for official investigations and “enquiry” for public information requests (Irish Government (gov.ie) (state authority)).

Similarities to British English

• Same formal/informal split as the UK.
• Irish legal texts refer to “Tribunals of Inquiry” (Irish Statute Book (legal repository)).

Why this matters: if your audience includes readers from both Ireland and New Zealand, the same rule applies – use “enquiry” for questions, “inquiry” for investigations.

How should I use enquiry or inquiry in an email in New Zealand?

Practical email examples

• Subject line: “Enquiry about product availability” – for a casual request (Office of the Auditor-General (NZ public sector audit body)).
• Subject line: “Formal inquiry regarding complaint” – for a complaint that may require investigation.
• Body: “Thank you for your enquiry. We will respond within two business days.” – standard customer service response.

New Zealand government usage

The New Zealand government uses “inquiry” as the statutory term under the Inquiries Act 2013. The Department of the Prime Minister and Cabinet distinguishes three types: Royal commissions, public inquiries, and government inquiries (Department of the Prime Minister and Cabinet (NZ Cabinet Office)). These are always spelled with an “i”.

Common phrases

• “Please make an enquiry via our website.”
• “The committee is conducting an inquiry.”
• “We have received your enquiry and will respond shortly.”

The trade-off: if you use “inquiry” for a routine email, you risk sounding overly formal or even accusatory. Stick with “enquiry” for all standard correspondence, and reserve “inquiry” for situations where you expect an official process to begin.

The distinction ensures clarity in both routine correspondence and formal proceedings.

Enquiry or Inquiry – Pros and Cons

Confirmed Facts vs What’s Unclear

Confirmed facts

• In British English, “enquiry” is used for general questions and “inquiry” for formal investigations (Ginger Software (English language reference)).
• In American English, “inquiry” is standard for all contexts (Grammarly (writing guidance platform)).
• New Zealand English follows British English conventions (Department of the Prime Minister and Cabinet (NZ Cabinet Office)).
• The Inquiries Act 2013 uses “inquiry” for all statutory investigations (Department of Internal Affairs (NZ government department)).

What’s unclear

• Whether there is a strict rule in New Zealand for formal vs informal usage – many organisations are inconsistent.
• Whether “enquiry” is ever used in formal contexts in New Zealand (some government agencies use it on web forms, which blurs the line).
• Whether the distinction will erode under American influence, as seen in other areas of spelling (e.g., “color” for “colour”).
• Whether the procedure for submitting an inquiry to the Office of the Auditor-General (in writing, including email) applies uniformly across all NZ agencies.

Expert Perspectives

“In British English, ‘enquiry’ is used to ask for information and ‘inquiry’ is used for a formal investigation.”

– Ginger Software (English language reference)

“Americans use ‘inquiry’ for all types of questions and investigations. There is no separate ‘enquiry’ spelling in American English.”

– Grammarly (writing guidance platform)

“New Zealand government inquiries are established by one or more Ministers by notice in the New Zealand Gazette.”

– Department of the Prime Minister and Cabinet (NZ Cabinet Office)

“Public inquiries and government inquiries have the same legal powers under the Inquiries Act 2013.”

– Department of Internal Affairs (NZ government department)

For New Zealand professionals writing emails in 2025, the safest path is to follow the British distinction. Use enquiry when you are simply asking a question, and inquiry when you are referencing an official investigation or initiating a formal process. Choosing the wrong spelling won’t break your message, but getting it right shows attention to detail – a quality that matters in every email, from routine requests to sensitive complaints.

For those navigating similar spelling dilemmas, the no one vs noone spelling guide offers clear guidance on another frequently confused pair.

Frequently asked questions