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In an era where finance teams are asked to do more with less, accounting outsourcing companies have moved from “nice to have” to “must-have” for Australian businesses. Outsourcing the repetitive, compliance-heavy parts of accounting frees in-house teams to focus on strategic analysis and growth.
The Australian accounting services market reached an estimated USD 11.4 billion in 2024, and demand for outsourced finance functions, particularly finance & accounting, continues to accelerate.
Why Australian firms choose accounting outsourcing companies
Organisations choose the outsourcing of accounting services for predictable costs, specialist expertise, faster month-end close, and improved internal controls. Across the BPO landscape in Australia, business process outsourcing revenue and the number of players have been steadily rising, reflecting broader adoption of third-party providers to deliver accounting support services at scale.
Below, I present the top five accounting outsourcing companies that Australian firms are turning to, chosen for breadth of service, market presence, and capability to integrate with popular platforms such as Xero.
Top 5 accounting outsourcing companies in Australia
NCS Australia
NCS Australia specialises in outsourced accounting, bookkeeping, payroll, SMSF administration and virtual CFO support tailored to Australian CPAs and accounting firms.
Their value proposition is built on a dedicated back-office model that pairs local Australian oversight with offshore delivery to balance cost, speed and compliance.
For firms seeking a reliable outsourced bookkeeping provider that also offers higher-value advisory support, NCS positions itself as an end-to-end partner.
PwC Australia
As part of the global PwC network, PwC Australia offers a wide spectrum of finance and accounting outsourcing services that combine process redesign, technology (including cloud accounting platforms), and managed services.
Large enterprises often engage PwC for complex, regulated environments where integration across tax, audit and advisory matters.
Deloitte Australia
Deloitte brings scale, sector depth, and technology integration to finance transformation and outsourced accounting arrangements. Their work often centres on transforming finance operations, using automation and analytics, while providing outsourced accounting services for clients needing more resilient, future-proof processes.
KPMG Australia
KPMG provides managed accounting and finance functions alongside advisory services, focusing on compliance, risk management and operational resilience.
For organisations that want a single adviser across audit, tax, and outsourced finance operations, KPMG remains a prominent option in Australia’s market.
EY Australia
EY’s finance function outsourcing blends technology, process and people to deliver scalable accounting operations and reporting. Their global delivery network supports multi-jurisdictional clients who require harmonised accounting support services and strong governance.
How to pick between accounting outsourcing firms
Choosing an outsourcing partner is less about brand and more about fit. Consider these criteria:
- Depth of services: Do you need bookkeeping only, or a broader suite that includes tax, SMSF administration or Virtual CFO? Many organisations begin with outsourced bookkeeping and expand to wider accounting support services.
- Tech compatibility: Ensure the provider is comfortable with your stack; for many Australian SMEs and firms, this means working seamlessly with Xero, counting them among reputable Xero accounting providers.
- Governance and local oversight: Look for onshore relationship managers and clear SLAs.
- Scale & flexibility: Can the partner scale during peak seasons (e.g., lodgement periods) and adapt to change?
The business case: numbers that matter
The broader BPO sector in Australia continues to expand, and finance & accounting stands out as a leading segment, meaning buyers can access specialised delivery models and technology investments that were previously available only to large corporates.
Research and market reports highlight steady growth in demand and migration of F&A processes to outsourced models, driven by cost, talent and digital transformation.
Conclusion
For Australian firms aiming to sharpen financial operations, accounting outsourcing companies offer a pragmatic path to better controls, predictable costs, and more strategic finance teams.
Whether you partner with a specialist like NCS Australia and advisory integration, the key is to define outcomes, match capabilities to needs and confirm technology fit, especially if you rely on cloud platforms and expect your outsourced provider to be a certified Xero accounting provider or a dependable outsourced bookkeeping provider.
The market is mature and growing; a thoughtful selection of an outsourcing partner will convert tactical relief into a strategic advantage.