Company lists · Data refreshed September 2026

Top 25 Big 4 business consulting firms based in Sydney, Australia

Name: Big 4 business consulting firms based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 85 companies tracked

RevenueBase identified 85 big 4 business consulting firms headquartered in Sydney, Australia as of September 2026 and tracks 16,088 professional contacts across them, including 2,694 with verified work emails. Sydney is the largest hub.

This list covers big 4 business consulting firms headquartered in Sydney, 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 21, 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 21, 2026 86% judged on-target in blind review

85Companies

16,088Contacts tracked

2,694Verified emails

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

The 25 largest big 4 business consulting firms based in Sydney, Australia

Ranked by team size

Top 25 of 85 big 4 business consulting firms based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to big 4 business 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	Kpmg Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	5,001-10,000	9,024 contacts →
	Indirect evidence “Welcome to KPMG.” Source: RevenueBase Database · checked Sep 21, 2026
2	Grant Thornton Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1,001-5,000	1,626 contacts →
	Indirect evidence “Your business deserves remarkable support.” Source: RevenueBase Database · checked Sep 21, 2026
3	William Buck	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1,001-5,000	1,088 contacts →
	Indirect evidence “William Buck is a leading firm of Accountants and advisors with 150 partners and over 1,100 professional staff.” Source: RevenueBase Database · checked Sep 21, 2026
4	Nexia Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	501-1,000	131 contacts →
	Indirect evidence “At Nexia Australia, our purpose is to connect you to your true potential by giving you the accounting insight, advice, and support you need to navigate to success.” Source: RevenueBase Database · checked Sep 21, 2026
5	Byrons	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	51-200	85 contacts →
	Indirect evidence “BYRONS are one of the largest independent advisory firms in Sydney with 18 Directors and over 80 professional staff.” Source: RevenueBase Database · checked Sep 21, 2026
6	PPB Advisory	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	201-500	70 contacts →
	Indirect evidence “PPB Advisory is a leading advisory firm that is focused on helping organisations navigate critical and complex issues, improve their performance and realise their strategic goals.” Source: RevenueBase Database · checked Sep 21, 2026
7	The Bridge International	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	30 contacts →
	Partial evidence “The Bridge International is a non-traditional management consulting team operating in Australia and internationally, with deep client side experience within the financial services…” Source: RevenueBase Database · checked Sep 21, 2026
8	Smart Wealth Advisors	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	27 contacts →
	Indirect evidence “Smart Wealth Advisors is a Sydney-based professional service firm with deep expertise in accounting tax and advisory, who provides adaptive, high-quality and client-focused…” Source: RevenueBase Database · checked Sep 21, 2026
9	Khourys & Associates	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	26 contacts →
	Indirect evidence “Khourys & Associates was founded over 30 years ago, as a vision of Charles Khoury, with the desire to provide Accounting, Taxation and Business Advice and Services to the local…” Source: RevenueBase Database · checked Sep 21, 2026
10	WIS Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Wis Australia: Founded in 2013 as 'Wis Partners', Wis Australia has swiftly risen as a boutique powerhouse in professional services, with a pronounced presence in New South Wales…” Source: RevenueBase Database · checked Sep 21, 2026
11	XARY	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “At XARY, we help small and medium sized businesses grow by simplifying complexities, to scale with confidence.” Source: RevenueBase Database · checked Sep 21, 2026
12	KMB Business Advisors & Chartered Accountants	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	19 contacts →
	Partial evidence “KMB business advisors and chartered accountants is a Sydney based firm offering a diverse range of services including audit, consulting, financial advisory, risk management, and…” Source: RevenueBase Database · checked Sep 21, 2026
13	Zahr Partners	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “We go above and beyond to help you navigate times of need, uncertainty and opportunity.” Source: RevenueBase Database · checked Sep 21, 2026
14	Shorrock Partners PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1-10	12 contacts →
	Indirect evidence “Shorrock Partners was founded in 2009 with a vision of forging strategic partnerships with clients, to help them manage and retain and grow their business.” Source: RevenueBase Database · checked Sep 21, 2026
15	WCM Chartered Accountants	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “Watkins Coffey Martin Chartered Accountants was founded in” Source: RevenueBase Database · checked Sep 21, 2026
16	Harriss Wagner Consultants And Advisers	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “We are renowned for partnering with our clients to help modernise their operations and technologies to remain competitive.” Source: RevenueBase Database · checked Sep 21, 2026
17	Incite Accountants & Advisors	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “Incite Accountants & Advisors pride ourselves in being friendly, accessible accounting specialists who make it our business to help you make your business successful.” Source: RevenueBase Database · checked Sep 21, 2026
18	Hammoud Partners	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “Established in and located in the Sydney CBD, our practice caters to the premium accounting, taxation, and business advisory needs of businesses, both large and small, across a…” Source: RevenueBase Database · checked Sep 21, 2026
19	Rivalizar International Rivalizar Capital	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	6 contacts →
	Partial evidence “We are a Professional Services company providing Management Consulting and Business Operations Management Services to clients who have affinity towards global trade and an…” Source: RevenueBase Database · checked Sep 21, 2026
20	Strategy 360	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	6 contacts →
	Indirect evidence “The Strategy 360 group was formed via a merger of three successful accounting, wealth management and corporate advisory groups.” Source: RevenueBase Database · checked Sep 21, 2026
21	Mainline Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Mainline Solutions Pty Limited was formed to enable professionals to inject their insightfulness into a range of management environments.” Source: RevenueBase Database · checked Sep 21, 2026
22	Jack Lawrence Accountants And Advisors	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “At JACK LAWRENCE ACCOUNTANTS & ADVISORS, the skills, knowledge and expertise of our team have been developed through practical and continuous professional development.” Source: RevenueBase Database · checked Sep 21, 2026
23	Alam Arnold PTY LTD Chartered Accountants	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Alam Arnold Pty Ltd Chartered Accountants is an Australian owned firm in Sydney.” Source: RevenueBase Database · checked Sep 21, 2026
24	Ophir Partners PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “Ophir Partners is an Australian-based consulting firm providing executive leadership, technical & corporate advisory and strategy solutions to public and private companies across…” Source: RevenueBase Database · checked Sep 21, 2026
25	Charterlaw Legal	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	3 contacts →
	Indirect evidence “CharterLaw now offers an integrated legal and accounting service when on 1 September 2015, the legal firm, CharterLaw Legal joined forces with a firm of chartered accountants…” Source: RevenueBase Database · checked Sep 21, 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: big 4 business 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 big 4 business consulting firms.
Partial evidence: Its own public description names part of big 4 business consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big 4 business 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 85 big 4 business consulting firms based in Sydney, Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,694 reachable decision-makers.

Free signup · no credit card

View the full list →

Big 4 business consulting firms based in Sydney, Australia at a glance

As of Sep 21, 2026

16.7%Verified-email coverage

189.3Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Sydney

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole Australia list rather than for Sydney, so it is reported there. Company counts and contact totals on this page are exact for Sydney, over 85 companies.

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 big 4 business 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 Sydney, Australia whose own description of what they do matches “big 4 business 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 big 4 business 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 big 4 business consulting firms, and records with no verified work email. Companies headquartered outside Sydney 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, 2,694 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 21, 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.

Big 4 business consulting firms by metro in Australia

Big 4 business consulting firms in Sydney85
Big 4 business consulting firms in Melbourne68
Big 4 business consulting firms in Brisbane34
Big 4 business consulting firms in Canberra27

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 big 4 business 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 big 4 business consulting firms are there based in Sydney, Australia?

RevenueBase identified 85 big 4 business consulting firms headquartered in Sydney, 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?

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

Which city has the most big 4 business consulting firms?

Sydney leads with 85 headquartered companies, followed by Melbourne (68) and Brisbane (34).

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 2,694 verified decision-maker contacts tracked across these 85 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 85 big 4 business consulting firms based in Sydney, Australia. Start with a free account, no credit card.

Download this list →

Related lists

Big 4 business consulting 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.