Company lists · Data refreshed September 2026

Top 25 Business IT consulting firms based in Australia

Name: Business IT consulting firms based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 2,503 companies tracked

RevenueBase identified 2,503 business IT consulting firms headquartered in Australia as of September 2026 and tracks 22,078 professional contacts across them, including 8,709 with verified work emails and 1,497 with mobile numbers. Sydney is the largest hub.

This list covers business IT consulting firms headquartered in Australia, 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

2,503Companies

22,078Contacts tracked

8,709Verified emails

1,497Mobile numbers

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The 25 largest business IT consulting firms based in Australia

Ranked by team size

Top 25 of 2,503 business IT consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business IT consulting 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	NCS Group Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 23, 2026	1,001-5,000	802 contacts →
	Indirect evidence “NCS in Australia is reinventing technology services from the inside out.” Source: RevenueBase Database · checked Sep 23, 2026
2	Atturra	Partial evidence	Sydney, AustraliaHQ checked Sep 23, 2026	1,001-5,000	801 contacts →
	Partial evidence “Atturra (ASX: ATA) is one of Australia's leading advisory and IT solutions providers, focused on providing end-to-end transformation services to its clients.” Source: RevenueBase Database · checked Sep 23, 2026
3	Nexon Asia Pacific	Partial evidence	Sydney, AustraliaHQ checked Sep 23, 2026	501-1,000	777 contacts →
	Partial evidence “Nexon Asia Pacific (Nexon) is an award-winning digital consulting and managed services partner for mid-market, enterprise, and government organisations across Australia.” Source: RevenueBase Database · checked Sep 23, 2026
4	NRI Australia & NEW Zealand	Partial evidence	Sydney, AustraliaHQ checked Sep 23, 2026	1,001-5,000	711 contacts →
	Partial evidence “As a trusted end-to-end digital partner, we design, build, and manage IT solutions that turn bold visions into reality and set new standards of excellence for our clients.” Source: RevenueBase Database · checked Sep 23, 2026
5	Centorrino Technologies	Indirect evidence	Coburg, AustraliaHQ checked Sep 23, 2026	201-500	352 contacts →
	Indirect evidence “We are an Australian-owned, full-service ICT Solutions and Cyber Security provider with a locally based team of over 450 passionate Aussies.” Source: RevenueBase Database · checked Sep 23, 2026
6	Davidson	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 23, 2026	501-1,000	305 contacts →
	Indirect evidence “As a proudly Australian company, over 30 years Davidson has evolved into a leader in enhancing workplace performance.” Source: RevenueBase Database · checked Sep 23, 2026
7	SSW	Partial evidence	Neutral Bay, AustraliaHQ checked Sep 23, 2026	51-200	281 contacts →
	Partial evidence “SSW's Consulting Services have delivered best-of-breed Microsoft solutions for more than clients in 15 countries.” Source: RevenueBase Database · checked Sep 23, 2026
8	Finity	Indirect evidence	The Rocks, AustraliaHQ checked Sep 23, 2026	201-500	253 contacts →
	Indirect evidence “We are a trusted partner of tech start-ups through to large scale organisations.” Source: RevenueBase Database · checked Sep 23, 2026
9	Terra Firma Business Consulting	Indirect evidence	Melbourne, AustraliaHQ checked Sep 23, 2026	201-500	235 contacts →
	Indirect evidence “At Terra Firma, we understand that success is all about sustaining long-term relationships.” Source: RevenueBase Database · checked Sep 23, 2026
10	Professional Advantage	Indirect evidence	124 Walker Street, AustraliaHQ checked Sep 23, 2026	201-500	234 contacts →
	Indirect evidence “Helping organisations achieve more with technology.” Source: RevenueBase Database · checked Sep 23, 2026
11	DB Results	Partial evidence	Melbourne, AustraliaHQ checked Sep 23, 2026	201-500	224 contacts →
	Partial evidence “DB Results is a profit-for-purpose digital business consulting and technology company.” Source: RevenueBase Database · checked Sep 23, 2026
12	The Missing Link	Indirect evidence	North Sydney, AustraliaHQ checked Sep 23, 2026	201-500	222 contacts →
	Indirect evidence “For over 28 years, The Missing Link has been a trusted technology partner to enterprise, government and high-growth businesses across Australia.” Source: RevenueBase Database · checked Sep 23, 2026
13	Seisma	Indirect evidence	Melbourne, AustraliaHQ checked Sep 23, 2026	501-1,000	185 contacts →
	Indirect evidence “We make technology work for people, not the other way around.” Source: RevenueBase Database · checked Sep 23, 2026
14	Tecala Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 23, 2026	201-500	179 contacts →
	Indirect evidence “Tecala is an award-winning Australian technology partner, helping mid-market organisations navigate complexity and accelerate transformation with confidence.” Source: RevenueBase Database · checked Sep 23, 2026
15	Barhead, An Akkodis Company	Partial evidence	Sydney, AustraliaHQ checked Sep 23, 2026	10001+	177 contacts →
	Partial evidence “Barhead, an Akkodis company, is an award-winning consulting firm focused on leveraging Microsoft’s Technology Stack to deliver business solutions.” Source: RevenueBase Database · checked Sep 23, 2026
16	Intuit Technologies	Partial evidence	Hobart, AustraliaHQ checked Sep 23, 2026	51-200	172 contacts →
	Partial evidence “Intuit Technologies is a Tasmanian-owned national IT services provider, with offices across Tasmania, Victoria, and Queensland.” Source: RevenueBase Database · checked Sep 23, 2026
17	Protiviti Australia	Partial evidence	Melbourne, AustraliaHQ checked Sep 23, 2026	5,001-10,000	172 contacts →
	Partial evidence “Protiviti is a global business consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently…” Source: RevenueBase Database · checked Sep 23, 2026
18	Programmed Professionals	Indirect evidence	Melbourne, AustraliaHQ checked Sep 23, 2026	51-200	172 contacts →
	Indirect evidence “At Programmed Professionals, we are committed to delivering outstanding results for you.” Source: RevenueBase Database · checked Sep 23, 2026
19	Crystal Delta	Indirect evidence	Melbourne, AustraliaHQ checked Sep 23, 2026	51-200	155 contacts →
	Indirect evidence “Explore new frontiers, uncover value from core business and build secure, scalable digital foundations through our transformative Technology Solutions.” Source: RevenueBase Database · checked Sep 23, 2026
20	CPT Global	Partial evidence	Melbourne, AustraliaHQ checked Sep 23, 2026	51-200	154 contacts →
	Partial evidence “CPT Global is your independent partner for achieving peak IT performance.” Source: RevenueBase Database · checked Sep 23, 2026
21	Blue Connections IT	Partial evidence	Scoresby, AustraliaHQ checked Sep 23, 2026	51-200	147 contacts →
	Partial evidence “Blue Connections IT is a leading Australian-owned provider of best-in-class IT solutions and managed services.” Source: RevenueBase Database · checked Sep 23, 2026
22	Diamond IT	Partial evidence	Warabrook, AustraliaHQ checked Sep 23, 2026	51-200	118 contacts →
	Partial evidence “Diamond IT is an Australian technology partner supporting organisations since 1996 with solutions that improve business outcomes, reduce risk, and enable sustainable growth.” Source: RevenueBase Database · checked Sep 23, 2026
23	Outcomex	Indirect evidence	North Ryde, AustraliaHQ checked Sep 23, 2026	51-200	115 contacts →
	Indirect evidence “Outcomex is an award winning advisor, devoted to providing intuitive solutions in information technology.” Source: RevenueBase Database · checked Sep 23, 2026
24	Renew IT	Partial evidence	Lane Cove West, AustraliaHQ checked Sep 23, 2026	51-200	115 contacts →
	Partial evidence “Innovative Managed Services: Bridging Assets, Systems, and Security Welcome to Renew IT, your trusted partner in delivering comprehensive managed services, systems integration…” Source: RevenueBase Database · checked Sep 23, 2026
25	Office Solutions IT	Partial evidence	Osborne Park, AustraliaHQ checked Sep 23, 2026	51-200	114 contacts →
	Partial evidence “IT to smile about.” 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 IT consulting 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 IT consulting firms.
Partial evidence: Its own public description names part of business IT consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business IT consulting 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 2,503 business IT consulting firms based in Australia

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Business IT consulting firms based in Australia at a glance

As of Sep 23, 2026

39.4%Verified-email coverage

6.8%Mobile-number coverage

8.8Average contacts per company

1-10Median size (employees)

19.5%Largest-city concentration · Sydney

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

1,752

11-50

566

51-200

131

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 25.0d

6,6380–30

1,93331–60

11761–90

290–180

19180+

Company record updated

Median 86.0d

00–30

2,21831–60

11,31761–90

7,17390–180

1,370180+

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 IT consulting 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 Australia whose own description of what they do matches “business IT consulting 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 IT consulting 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 IT consulting firms, and records with no verified work email. Companies headquartered outside Australia 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, 8,709 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 IT consulting 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 IT consulting 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 IT consulting firms are there based in Australia?

RevenueBase identified 2,503 business IT consulting firms headquartered in Australia 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?

NCS Group Australia, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most business IT consulting firms?

Sydney leads with 488 headquartered companies, followed by Melbourne (418) and Brisbane (176).

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 8,709 verified decision-maker contacts tracked across these 2,503 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.

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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.