Williams & Partners Inc. and its predecessors have practiced forensic and investigative accounting for over forty years. Bill Williams, Nick Angellotti and Rob Pellegrini, combined, have approximately 75 years of practical experience and knowledge in the accounting profession.
We are supported by Williams & Partners, Chartered Accountants LLP, a firm of over thirty professionals and support staff in auditing, insurance loss accounting, information technology, contracts, legislation and taxation.


Our clients consist of major insurance companies, independent insurance adjusters, law firms, corporations, business owners and individuals.


We regularly provide training and educational services for the Insurance Institute of Canada and insurance companies.

What we do
A forensic and investigative accounting firm must have many diverse skills - excellent accounting abilities are only the beginning.
Prompt, accurate, and efficient settlement requires an in-depth knowledge of the legal system, insurance forms and applicable legislation plus discretion, persistence, and insight born of experience.

Williams & Partners Inc. can assist with all types of claims and litigation support. We understand every aspect of insurance - policy details, legislation, legal implications, and the industry environment. You’ll receive expert opinions backed up by fast, clearly written, comprehensive reports.

How we can help you
Our highly focused investigative process saves time and costs.
We examine all available information and determine what is needed to help resolve the dispute.
We apply our knowledge and past experiences to the case, investigate the accounting records, financial statements, source documents, tax returns, and all other relevant information. We use this information to assess authenticity and reasonability given current trends and the economic environment. We objectively quantify the issues based on the case facts. An experienced, professional accountant will personally - and promptly - handle your assignments. We keep you apprised of our investigation on an ongoing basis. You always receive the benefits of personal attention from a full service firm.We utilize the latest technology such as internet communications and research, electronic data extraction and analysis. We can import data from any computing environment.Our many educational seminars add value to any claims group.


Our practice includes
• accident benefit claims
• cost audits
• tort claims
• errors and omissions
• business interruption losses
• extra expense
• property losses
• economic losses
• construction bonds
• inventory and stock losses
• jewelers and furriers block
• evaluation of financial position
• fidelity bonds
• products liability
• third party liability
• downtime claims
• educational seminars and training
• testifying before judicial bodies
• appraisal, umpire and mediation services
• research and analysis into current issues
• training