Company lists · Data verified August 2026

Top 25 Accounting outsourcing companies based in Sydney, Australia

There are 87 accounting outsourcing companies headquartered in Sydney, Australia (RevenueBase, August 2026). RevenueBase tracks 781 professional contacts across them, including 291 with verified work emails and 25 with mobile numbers. Melbourne is the largest hub.

This list covers accounting 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. Data current as of August 28, 2026.

87Companies
781Contacts tracked
291Verified emails
25Mobile numbers
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The 25 largest accounting outsourcing companies based in Sydney, Australia

Ranked by team size
Top 25 of 87 accounting outsourcing companies based in Sydney, Australia, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#CompanyHQEmployeesContactsVerified emails
1HammerjackSydney501-1,000356167
2MY Accounts AUSydney11-505231
3The Outsourced ExpertSydney11-50308
4Optimisers KPO Private LimitedSydney51-2002419
5PAY Australia PTY LTDSydney11-50167
6CFO PlusSydney11-50159
7North AdvisorySydney11-50139
8NCS AustraliaSydney51-20091
9LCL AccountingSydney1-1064
10Take Care Of BooksSydney1-1054
11Lower Russell & FarrSydney11-5053
12Lancero & COSydney11-5042
13Refuge AccountingSydney1-1041
14Pratt Partners TAX & AdvisorySydney11-5033
15books360.com.auSydney1-1032
16Olivetree ConsultantsSydney11-5031
17Helium AccountingSydney1-1031
18Your Accounts DepartmentSydney1-1031
19Argo Accounting, Taxes & Outsourcing SolutionsSydney1-1031
20AccountshqSydney1-1022
21Conscious Wealth CreationSydney1-1022
22Fourfold Australia Pty. LTDSydney11-5021
23Stellar ProfitsSydney1-1021
24Reset Group PTY LTDSydney1-1021
25Numbers & COSydney11-5011

Showing 25 of 87 accounting outsourcing companies based in Sydney, Australia

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Accounting outsourcing companies based in Sydney, Australia at a glance

As of Aug 28, 2026
1-10Median size (employees)
MelbourneLargest hub · 96 HQs
25Contacts with mobile numbers
2Emails re-verified in last 30 days

Companies by employee count

1-10
57
11-50
21
51-200
5
201-500
2
501-1,000
1
1,001-5,000
1

Accounting outsourcing companies by metro in Australia

MetroCompanies
Accounting outsourcing companies in Melbourne96
Accounting outsourcing companies in Sydney87
Accounting outsourcing companies in Perth34
Accounting outsourcing companies in Brisbane34
Accounting outsourcing companies in Gold Coast11
Accounting outsourcing companies in Adelaide11
Accounting outsourcing companies in Newcastle6

How this list was built

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion
Companies whose own business descriptions match “accounting outsourcing companies”, with match quality audited by blind human judging, and headquartered in Sydney, Australia.
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
Contact records re-verify on a rolling cadence; 2 contacts on this list were re-verified in the last 30 days.
Refresh
Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many accounting outsourcing companies are there based in Sydney, Australia?

There are 87 accounting outsourcing companies headquartered in Sydney, Australia as of August 2026 (RevenueBase).

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 outsourcing companies?

Melbourne leads with 96 headquartered companies, followed by Sydney (87) and Perth (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 291 verified decision-maker contacts tracked across these 87 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.