KSV Advisory Canada’s Leading Boutique Advisory, Restructuring and Valuations Firm.

Errol Soriano

Managing Director


Errol is the Managing Director in charge of KSV Advisory’s Valuation and Disputes practice. He is a graduate from the Ivey School of Business at Western University (1987), a Chartered Professional Accountant (1989), Chartered Business Valuator (1991), Certified Fraud Examiner (1993). He has received the honorary designation of Fellow from the Canadian Institute of Chartered Business Valuators and separately from the Canadian Institute of Chartered Professional Accountants in recognition of his extensive contributions and overall leadership in the profession.

Be it in his personal or professional life, Errol has an innate curiosity that drives his desire to get to the answer. Errol’s affinity for math and his formal training in business and accounting are a natural fit for his practice in business valuation and financial loss quantification.

Errol is known for his hands-on, honest and straightforward approach and his ability to distill complex issues into simple-to-understand components, both in written reports and in court testimony. With his calm demeanour, strong listening skills, and detailed knowledge of every file, Errol has testified more than 65 times, among the most for damages experts in Canada.

He has appeared in provincial, federal and tax courts as well as in the Supreme Court of Singapore and domestic and international arbitration proceedings. Errol has also appeared before regulatory boards such as the Patent Medicine Prices Review Board, and has acted as a court-appointed Inspector.

In non-litigious matters, his expertise is sought for preparing fairness opinions to Special Committees of public companies and expert reports submitted to regulatory boards, professional associations, and government ministries and agencies on matters involving value in the context of policy, regulatory compliance and pricing.

Errol has clients in Canada, the United States, Europe, Asia, South America and the Middle East. He has worked with most large law firms in Canada, and many boutique firms. He is a hands-on expert, knowing that clients want to work with people who listen and who they can trust to provide well-reasoned, thoroughly research opinions and advice. He works hard for this trust, creating thorough, concise reports.

Having been retained in more than 1,000 cases over the last 30 years, Errol has developed expertise in intellectual property, transaction disputes, shareholder disputes, estate litigation, breach of contract and fiduciary duty, international trade and investment disputes, tax shelters, product liability, class actions, tax disputes, franchising, and insurance claims including professional negligence. He has worked in a wide range of industries with particularly deep experience in information technology, natural resources, chemicals, pharmaceuticals, infrastructure development, transportation, durables manufacturing, consumer products, and agriculture.

Errol is widely recognized as one of the top damages experts in the country according to surveys of Canadian lawyers in the International Who’s Who of Commercial Arbitration, every year from 2013 to the present. He is also the author/editor of texts on the quantification of financial loss and business valuation and has lectured extensively to professional interest groups in Canada, the United States, Europe and the Middle East.


  • Chartered Business Valuator (1993)
  • Chartered Professional Accountant (CPA, CA) (1989)
  • Ivey Business School at Western University, HBA, Commerce and Finance, Dean’s List (1987)

Professional Associations

  • Member of the Advisory Board, R.E.A.C.H. Canada
  • CPA Mentor, Chartered Professional Accountants of Ontario (CPA Ontario)
  • Volunteer – CPA Mentorship Program, Ontario Institute of Chartered Professional Accountants
  • Chair of the Board of Examiners, The Canadian Institute of Chartered Business Valuators
  • Honourary Fellow, Canadian Institute of Chartered Business Valuators
  • Honourary Fellow, Canadian Institute of Chartered Professional Accountants