Company lists · Data refreshed September 2026

Top 25 Accounting and tax outsourcing companies based in Sydney, Australia

Name: Accounting and tax outsourcing companies based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 225 companies tracked

RevenueBase identified 225 accounting and tax outsourcing companies headquartered in Sydney, Australia as of September 2026 and tracks 1,875 professional contacts across them, including 841 with verified work emails. Sydney is the largest hub.

This list covers accounting and tax outsourcing companies 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 22, 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 22, 2026 86% judged on-target in blind review

225Companies

1,875Contacts tracked

841Verified emails

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The 25 largest accounting and tax outsourcing companies based in Sydney, Australia

Ranked by team size

Top 25 of 225 accounting and tax outsourcing companies based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to accounting and tax outsourcing companies: 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	Hammerjack	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	501-1,000	349 contacts →
	Partial evidence “hammerjack is an Australian and Philippine-owned offshore outsourcing and Knowledge Process Outsourcing (KPO) provider.” Source: RevenueBase Database · checked Sep 22, 2026
2	Solutions Centric	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	134 contacts →
	Partial evidence “Solutions Centric is a privately owned offshoring provider for accounting firms and financial advisors in Australia.” Source: RevenueBase Database · checked Sep 22, 2026
3	ESV	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	96 contacts →
	Indirect evidence “ESV is a leading mid-tier Australian business advisory and accountancy firm.” Source: RevenueBase Database · checked Sep 22, 2026
4	Boroughs Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	77 contacts →
	Indirect evidence “During our 70 years we have established a worldwide reputation for our quality approach to all our client matters.” Source: RevenueBase Database · checked Sep 22, 2026
5	The Azure Group	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	54 contacts →
	Partial evidence “Azure Group is an innovative and dynamic accounting and business advisory firm, based in Sydney, Australia and Shanghai, China.” Source: RevenueBase Database · checked Sep 22, 2026
6	MY Accounts AU	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	53 contacts →
	Partial evidence “We provide a complete bookkeeping and accounting service that can grow with your business – from day to day bookkeeping through to a complete accounts department with CFO services.” Source: RevenueBase Database · checked Sep 22, 2026
7	BFS Partners	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	n/a	41 contacts →
	Partial evidence “Experts in our field, ‘BFS Partners’ is a team of professionals including members of Institute of Chartered Accountants (ICAA), Tax Practitioners Board (TPB) and Australian…” Source: RevenueBase Database · checked Sep 22, 2026
8	Accounts Automated	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	39 contacts →
	Indirect evidence “Accounts Automated, established in 2013, is an independent bookkeeping service providing both manual and computerised bookkeeping using MYOB, Xero, and QuickBooks.” Source: RevenueBase Database · checked Sep 22, 2026
9	WTS Australia	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	31 contacts →
	Partial evidence “A top tier tax, legal and digital firm that is locally rooted and globally connected.” Source: RevenueBase Database · checked Sep 22, 2026
10	Economos Chartered Accountants	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	29 contacts →
	Partial evidence “Economos Chartered Accountants has been delivering a diverse range of business advisory and accounting services since 1978.” Source: RevenueBase Database · checked Sep 22, 2026
11	Fullstack	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	29 contacts →
	Partial evidence “Our chartered accounting firm specialises in serving innovative businesses and their founders, providing quality accounting services to help them startup and grow.” Source: RevenueBase Database · checked Sep 22, 2026
12	BTG International	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	26 contacts →
	Partial evidence “At BTG International, we redefine excellence in business tax services with award-winning, innovative solutions tailored to your business needs.” Source: RevenueBase Database · checked Sep 22, 2026
13	The Quinn Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	26 contacts →
	Indirect evidence “Looking for expert advice across multiple areas to achieve your business and personal goals?” Source: RevenueBase Database · checked Sep 22, 2026
14	Optimisers KPO Private Limited	Strong evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	25 contacts →
	Strong evidence “We offer single-window services to Australian accounting and bookkeeping practices and provide perfect Account & Tax Outsourcing Solutions which includes a varied and diverse…” Source: RevenueBase Database · checked Sep 22, 2026
15	Sovereign Private	Strong evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	24 contacts →
	Strong evidence “Sovereign Private is an award-winning boutique Chartered Accounting firm specialising in delivering expert tax, accounting, and advisory services to medium-sized private…” Source: RevenueBase Database · checked Sep 22, 2026
16	Latitude Accountants	Strong evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	22 contacts →
	Strong evidence “Latitude Accountants offers a full range of accounting and tax services.” Source: RevenueBase Database · checked Sep 22, 2026
17	Vital Addition	Strong evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	21 contacts →
	Strong evidence “Vital Addition (VA) was founded to address the failings of the traditional approach to accounting, outsourced CFO, and tax services, which left clients under-serviced and…” Source: RevenueBase Database · checked Sep 22, 2026
18	XARY	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 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 22, 2026
19	WLM Accounting	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	19 contacts →
	Indirect evidence “We work with businesses in growth, with complex needs, operating locally and internationally.” Source: RevenueBase Database · checked Sep 22, 2026
20	CBC Partners	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	18 contacts →
	Indirect evidence “CBC Partners is a Chartered Accountancy firm based in the Sydney CBD.” Source: RevenueBase Database · checked Sep 22, 2026
21	Aura Partners Australia	Strong evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	18 contacts →
	Strong evidence “Aura Partners is a boutique accounting and tax advisory firm with capabilities and expertise acquired from experience at top 4 global accounting firms.” Source: RevenueBase Database · checked Sep 22, 2026
22	Fortis Accounting Partners	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	16 contacts →
	Partial evidence “Fortis Accounting Partners has been providing a full spectrum of accounting and taxation solutions to Australian and foreign business owners, large family groups, investors &…” Source: RevenueBase Database · checked Sep 22, 2026
23	CFO Plus	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	16 contacts →
	Indirect evidence “CFO Plus is a boutique financial services firm located in Sydney's CBD.” Source: RevenueBase Database · checked Sep 22, 2026
24	Mnsa PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	16 contacts →
	Partial evidence “MNSA is a comprehensive accounting, auditing and business administration firm, that takes pride in accommodating the unique needs of diverse clientele.” Source: RevenueBase Database · checked Sep 22, 2026
25	Momenta Advisors	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “We are a boutique Sydney based accounting firm providing premium business, accounting and taxation services.” Source: RevenueBase Database · checked Sep 22, 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: accounting and tax outsourcing companies. 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 accounting and tax outsourcing companies.
Partial evidence: Its own public description names part of accounting and tax outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name accounting and tax outsourcing companies. 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 225 accounting and tax outsourcing companies based in Sydney, Australia

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Accounting and tax outsourcing companies based in Sydney, Australia at a glance

As of Sep 22, 2026

44.9%Verified-email coverage

8.3Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Sydney

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

152

11-50

51-200

201-500

501-1,000

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 225 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 accounting and tax outsourcing companies, 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 “accounting and tax outsourcing companies”. 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 accounting and tax outsourcing companies), 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 accounting and tax outsourcing companies, 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, 841 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 22, 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.

Accounting and tax outsourcing companies by metro in Australia

Accounting and tax outsourcing companies in Sydney225
Accounting and tax outsourcing companies in Melbourne200
Accounting and tax outsourcing companies in Brisbane76
Accounting and tax outsourcing companies in Perth72
Accounting and tax outsourcing companies in Adelaide44
Accounting and tax outsourcing companies in Gold Coast26

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 accounting and tax outsourcing companies, 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 accounting and tax outsourcing companies are there based in Sydney, Australia?

RevenueBase identified 225 accounting and tax outsourcing companies 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?

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

Which city has the most accounting and tax outsourcing companies?

Sydney leads with 225 headquartered companies, followed by Melbourne (200) and Brisbane (76).

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 841 verified decision-maker contacts tracked across these 225 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 22, 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.