Company lists · Data refreshed September 2026

Top 25 Business consultancy firms based in New Zealand

Name: Business consultancy firms based in New Zealand
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 507 companies tracked

RevenueBase identified 507 business consultancy firms headquartered in New Zealand as of September 2026 and tracks 2,252 professional contacts across them, including 1,054 with verified work emails and 161 with mobile numbers. Auckland is the largest hub.

This list covers business consultancy firms headquartered in New Zealand, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 23, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 23, 2026 86% judged on-target in blind review

507Companies

2,252Contacts tracked

1,054Verified emails

161Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest business consultancy firms based in New Zealand

Ranked by team size

Top 25 of 507 business consultancy firms based in New Zealand, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business consultancy firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Tenzing Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 23, 2026	51-200	138 contacts →
	Indirect evidence “At Tenzing, we’ve been guiding our clients to new heights for over twenty years, embodying what we call the Sherpa ethos: partnering closely with clients, supporting them, and…” Source: RevenueBase Database · checked Sep 23, 2026
2	Optimation Group	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	201-500	90 contacts →
	Indirect evidence “Optimation and Presto Resourcing are part of the Optimation Group of companies.” Source: RevenueBase Database · checked Sep 23, 2026
3	Ashton Wheelans	Strong evidence	Christchurch, New ZealandHQ checked Sep 23, 2026	51-200	52 contacts →
	Strong evidence “We’re business consultants and chartered accountants operating in Christchurch, Rangiora, Greymouth, Oamaru and Wanaka.” Source: RevenueBase Database · checked Sep 23, 2026
4	Redvespa Consultants Limited	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	51-200	51 contacts →
	Indirect evidence “Unleashing business potential.” Source: RevenueBase Database · checked Sep 23, 2026
5	Prime Strategies Group	Indirect evidence	Auckland, New ZealandHQ checked Sep 23, 2026	11-50	46 contacts →
	Indirect evidence “Our nationwide team of Prime Strategies Advisors specialise in supporting the growth and development of businesses, both in New Zealand and overseas.” Source: RevenueBase Database · checked Sep 23, 2026
6	JTC Consulting	Indirect evidence	Auckland, New ZealandHQ checked Sep 23, 2026	n/a	46 contacts →
	Indirect evidence “Whether you run a small domestic enterprise or are part of a large multinational corporation increasing sales while maximising profit is critical to your on-going success.” Source: RevenueBase Database · checked Sep 23, 2026
7	DETA	Indirect evidence	Christchurch, New ZealandHQ checked Sep 23, 2026	11-50	45 contacts →
	Indirect evidence “DETA Consulting (DETA) is a young, dynamic and responsive organisation working with some of Australasia’s largest businesses to identify, develop and deliver optimisation services.” Source: RevenueBase Database · checked Sep 23, 2026
8	3plus Consulting	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	11-50	40 contacts →
	Indirect evidence “At 3Plus Consulting our ambition is to approach every engagement with the goal of making sure our clients are further along with their challenges, opportunities and capability…” Source: RevenueBase Database · checked Sep 23, 2026
9	Ackama	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	51-200	40 contacts →
	Indirect evidence “Experts in strategy, design and technology with offices in Wellington, Auckland and Melbourne.” Source: RevenueBase Database · checked Sep 23, 2026
10	Mark Collins Consultancy	Strong evidence	Auckland, New ZealandHQ checked Sep 23, 2026	1-10	28 contacts →
	Strong evidence “We are cultivating ambitious Foodservice and Hospitality business owners and operators by offering consultancy services focused on your business needs.” Source: RevenueBase Database · checked Sep 23, 2026
11	Maven Consulting	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	11-50	24 contacts →
	Indirect evidence “We create and develop solutions with our clients, based on their requirements.” Source: RevenueBase Database · checked Sep 23, 2026
12	Zephyr Consulting	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	11-50	23 contacts →
	Indirect evidence “We’re an independent NZ owned company specialising in the provision of business & information technology consulting, to help grow your company’s business potential.” Source: RevenueBase Database · checked Sep 23, 2026
13	BIZ Solutions Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 23, 2026	11-50	20 contacts →
	Indirect evidence “Picture a powerhouse of business growth, a beacon of financial wisdom, a catalyst for success - that's Biz Solutions.” Source: RevenueBase Database · checked Sep 23, 2026
14	Ascent Business Consulting	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	11-50	19 contacts →
	Indirect evidence “Ascent Business Consulting is a New Zealand based leader in the provision of professional business services.” Source: RevenueBase Database · checked Sep 23, 2026
15	VOLTE	Strong evidence	Wellington, New ZealandHQ checked Sep 23, 2026	11-50	15 contacts →
	Strong evidence “Volte is a no-nonsense management consultancy.” Source: RevenueBase Database · checked Sep 23, 2026
16	Pareto Toolbox	Strong evidence	Auckland City, New ZealandHQ checked Sep 23, 2026	11-50	14 contacts →
	Strong evidence “Pareto Toolbox is a NZ owned and operated consultancy business which offers fresh thinking to our clients underpinned by deep expertise and data analysis.” Source: RevenueBase Database · checked Sep 23, 2026
17	Vazeychild	Indirect evidence	Hamilton, New ZealandHQ checked Sep 23, 2026	11-50	13 contacts →
	Indirect evidence “We’ve been around for more than 20 years, so you can rely on our experience, but we’re also committed to staying ahead of the curve, utilising leading business and reporting…” Source: RevenueBase Database · checked Sep 23, 2026
18	Strategy Collective	Indirect evidence	New Plymouth, New ZealandHQ checked Sep 23, 2026	11-50	13 contacts →
	Indirect evidence “business strategy / brand & marketing / people & culture / commercial modelling Located in the historic White Hart building in New Plymouth’s West-End, Strategy Collective brings…” Source: RevenueBase Database · checked Sep 23, 2026
19	X IS Y	Strong evidence	Auckland, New ZealandHQ checked Sep 23, 2026	11-50	13 contacts →
	Strong evidence “We’re a management consultancy for the digital age.” Source: RevenueBase Database · checked Sep 23, 2026
20	Advantage Business	Indirect evidence	East Tamaki, New ZealandHQ checked Sep 23, 2026	11-50	12 contacts →
	Indirect evidence “We help business owners and operators be the absolute best they can be.” Source: RevenueBase Database · checked Sep 23, 2026
21	Hunter Group	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	11-50	12 contacts →
	Indirect evidence “We see our role as business enablers, providing resources and expertise to assist with short and long-term projects.” Source: RevenueBase Database · checked Sep 23, 2026
22	CIO Studio	Indirect evidence	Auckland, New ZealandHQ checked Sep 23, 2026	1-10	11 contacts →
	Indirect evidence “In a sector built on care, connection, and community, technology should make life easier - not harder.” Source: RevenueBase Database · checked Sep 23, 2026
23	Auctus Limited Partnership	Strong evidence	Hamilton, New ZealandHQ checked Sep 23, 2026	11-50	11 contacts →
	Strong evidence “A Consultancy Group focused on the growth of your business.” Source: RevenueBase Database · checked Sep 23, 2026
24	MBS Advisors	Indirect evidence	Morrinsville, New ZealandHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “At MBS Advisors we look at the bigger picture, and work with you to map out where you are, where you want to go and how you can get there.” Source: RevenueBase Database · checked Sep 23, 2026
25	BW Miller Dean	Indirect evidence	Wellington, New ZealandHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “BW Miller Dean is a senior-led accounting and advisory firm with its office in Wellington’s CBD.” Source: RevenueBase Database · checked Sep 23, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: business consultancy firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names business consultancy firms.
Partial evidence: Its own public description names part of business consultancy firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business consultancy firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 507 business consultancy firms based in New Zealand

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,054 reachable decision-makers.

Free signup · no credit card

View the full list →

Business consultancy firms based in New Zealand at a glance

As of Sep 23, 2026

46.8%Verified-email coverage

7.1%Mobile-number coverage

4.4Average contacts per company

1-10Median size (employees)

39.8%Largest-city concentration · Auckland

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

428

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 25.0d

8080–30

22731–60

1461–90

190–180

4180+

Company record updated

Median 74.0d

00–30

34131–60

1,19661–90

62590–180

90180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among business consultancy firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in New Zealand whose own description of what they do matches “business consultancy firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names business consultancy firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among business consultancy firms, and records with no verified work email. Companies headquartered outside New Zealand are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,054 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 23, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Business consultancy firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names business consultancy firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many business consultancy firms are there based in New Zealand?

RevenueBase identified 507 business consultancy firms headquartered in New Zealand as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Tenzing Limited, headquartered in Auckland, tops this list with the largest team on record.

Which city has the most business consultancy firms?

Auckland leads with 202 headquartered companies, followed by Wellington (73) and Christchurch (54).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,054 verified decision-maker contacts tracked across these 507 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 2026.

Ready to reach these companies? Verified emails and direct dials for all 507 business consultancy firms based in New Zealand. Start with a free account, no credit card.

Download this list →

Related lists

Business consultancy firms by geography

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.