Top 5 Outsource Accounting Firms in Canada [UPDATED 2025-26]

Outsourcing accounting is no longer an optional cost-cutting exercise, it’s a strategic move that lets Canadian businesses scale, access specialised talent, and focus on growth. In this guide to outsource accounting firms in Canada, we profile five market leaders, explain why outsourcing now matters, and surface the data that supports a shift toward external finance partners.

Why choose outsource accounting firms in Canada?

Canada’s accounting industry has seen significant expansion in recent years. In 2022, operating revenue for accounting, tax preparation, bookkeeping, and payroll services reached approximately $26.0 billion, highlighting a strong post-pandemic surge in demand for professional and outsourced financial services.

Statistics Canada At the same time, the number of accounting services businesses in Canada reached around 29,225 in 2024, underscoring how many firms now compete to serve Canadian companies.

These numbers matter because they show two trends: demand for professional accounting support is rising, and the market has more specialised providers than ever, making it the right moment for businesses to evaluate outsourcing accounting services to secure efficiency, compliance and strategic insight.

The market context (quick facts)

The payroll and bookkeeping segment alone was estimated at $7.4 billion in 2024, a strong signal that routine finance functions are prime candidates for external providers. IBISWorld Globally, finance and accounting outsourcing continues to grow; Canada accounted for an estimated 9.2% share of the global finance & accounting BPO market in 2024, reflecting the country’s important regional role in outsourced finance.

With the global business-process outsourcing market expanding, many Canadian companies are turning to outsourced partners for everything from transactional bookkeeping to strategic FP&A.

Top 5 Outsource Accounting Firms in Canada

1. Deloitte Canada

Globally recognised for consulting and assurance expertise, Deloitte is also among the top outsourcing accounting companies in Canada. Its finance and accounting outsourcing practice caters primarily to large and complex organisations, delivering scalable solutions underpinned by advanced technology and sector-specific knowledge.

Deloitte’s strength lies in integrating outsourced accounting with advisory services, offering clients a unified partner for both day-to-day finance operations and broader transformation initiatives.

2. NCS Canada

NCS Canada leads the market as the premier provider of outsourced finance and accounting in Canada. What sets NCS Canada apart is its hybrid delivery model: combining Canadian regulatory expertise with global execution capabilities. This ensures full compliance with CRA standards while giving businesses access to scalable, cost-efficient delivery teams.

NCS Canada supports organisations of every size, from fast-growing startups to established enterprises, with services that include financial statements preparation, payroll management, tax compliance, and management reporting. By leveraging automation and AI-driven tools, the firm shortens month-end cycles, reduces manual reconciliations, and delivers real-time financial visibility.

For Canadian businesses looking to future-proof their finance function, NCS Canada goes beyond execution. It delivers true transformation, positioning the finance function as a catalyst for growth, strategic decision-making, and long-term competitive advantage.

3. PwC Canada

PwC provides a wide range of outsourcing accounting services with a strong emphasis on governance, data-driven reporting, and digital innovation. Its global network enables seamless support for multinational organisations operating in Canada.

PwC is often chosen by firms that require robust internal controls, sophisticated financial reporting, and advisory integration alongside outsourced service delivery, making it especially appealing to enterprises navigating complex compliance landscapes.

4. EY Canada

EY has built a reputation for helping Canadian businesses modernise finance through automation, analytics, and process optimisation. Its outsourcing practice connects outsourced bookkeeping services with high-level management insights, ensuring financial operations are not only accurate but also strategically aligned.

EY’s solutions are particularly attractive to organisations that view outsourcing as a path to digital transformation, embedding real-time data and predictive insights directly into management decision-making.

5. KPMG Canada

KPMG completes the top five, offering comprehensive outsourced accounting services across bookkeeping, payroll, and compliance. With a strong emphasis on risk management, regulatory alignment, and transparent reporting, KPMG is a preferred choice for organisations with complex financial reporting needs both in Canada and globally.

In addition, KPMG continues to invest in automation platforms that integrate seamlessly with client systems, enhancing both efficiency and scalability.

How to evaluate an outsourcing accounting company

Selecting an outsourcing accounting company should be about outcomes as much as price. Look for partners that demonstrate: secure data governance, clear SLAs for month-end and reporting cadence, a proven onboarding and knowledge-transfer process, and the ability to scale resources up or down.

Consider whether the provider combines local expertise with offshore accountants to deliver both transactional outsourced bookkeeping services and higher-value financial analysis (outsourced finance and accounting), so you can centralise more of your finance function over time.

Practical checks: request sample KPI dashboards, ask for references in your industry, and confirm tools and integrations for your tech stack.

The ROI case — why firms outsource now

Outsourcing proves most valuable when it allows leadership to concentrate on driving growth while ensuring stability and efficiency across core financial operations. Industry projections show robust growth for outsourcing and finance BPO globally, a trend that supports investment in external providers.

For many SMEs and scaling companies in Canada, the ability to access seasoned accounting teams and cloud-first workflows delivers faster closes, cleaner books, and lower overhead versus hiring large internal teams.

Final thoughts: choosing the right partner

If your aim is cleaner financials, predictable reporting cadence, and a pathway toward automation, engaging one of the leading outsource accounting firms in Canada, from NCS Canada to the Big Four, can be transformational. Start with a short pilot (month-end close support or payroll consolidation) and measure outcomes against agreed KPIs: reduced close days, fewer adjusting entries, and improved cash forecasting.

The growth of the sector, driven by solid operating revenue and a large, active market of providers, means there are excellent options available. Use the data above to inform conversations, and prioritise partners that can show both compliance know-how and a roadmap to modern, automated finance.