Top Compliance Auditors in Canada

Baker Tilly is a top-10 global advisory CPA firm network with 43,000+ professionals in 141 countries, serving mid-market and growth companies.

BDO is the fifth-largest professional services network globally, providing audit, tax, and advisory services through member firms in over 160 countries.

CertPro is a Singapore-headquartered compliance firm offering SOC 2, ISO 27001, and PCI DSS certifications across Asia-Pacific, with offices in Hong Kong, Toronto, and London.

CQA (Canada Quality Audit) is a Canadian SCC-accredited ISO certification body offering ISO 27001, ISO 27701, and management system certifications across Canada.

Crowe Global is a top-10 global accounting network providing audit, tax, and advisory services through member firms in over 145 countries worldwide.

Deloitte is the world's largest professional services firm, offering audit, assurance, tax, and advisory services across 150+ countries worldwide.

Deloitte Canada is the country's largest Big Four professional services firm, providing SOC 2, ISO 27001, PIPEDA, SOX, and enterprise risk advisory services across financial services, technology, energy, and government sectors.

EY is a Big Four professional services firm providing audit, assurance, tax, consulting, and strategy services across more than 150 countries worldwide.

Grant Thornton is a leading global professional services network providing audit, tax, and advisory services through member firms in over 140 countries.

KPMG is a Big Four professional services firm providing audit, tax, and advisory services through a global network spanning 143 countries and territories.

KPMG Canada is a Big Four professional services firm providing SOC 2, ISO 27001, PIPEDA, SOX, and enterprise risk advisory services to Canadian organizations across financial services, technology, energy, and government.

MNP LLP is Canada's largest national accounting and consulting firm, providing SOC 2, ISO 27001, PIPEDA, and cybersecurity compliance services to mid-market businesses across all Canadian provinces.

Nexia International is a global network of independent accounting and consulting firms with 39,000+ professionals across 125+ countries worldwide.

PECB is a global certification and training organization specializing in ISO standards, offering both professional certifications and management system audits.

Prescient Assurance is a startup-friendly CPA firm offering affordable SOC 2, ISO 27001, and HIPAA audits with fast turnaround for growing companies.

PwC is one of the Big Four professional services firms, providing audit, assurance, tax, and consulting services to major organizations in 152 countries.

PwC Canada is a Big Four professional services firm providing SOC 2, ISO 27001, PIPEDA, SOX, and enterprise risk advisory services to Canada's largest organizations across financial services, technology, energy, and government.

Richter is a leading Canadian mid-market accounting and advisory firm based in Montreal, providing SOC 2, ISO 27001, PIPEDA, and cybersecurity compliance services with full bilingual capability.

RSM International is the sixth-largest global professional services network, delivering audit, tax, and consulting services across 120+ countries.