The Office of the Auditor General of Ontario is an independent office of the Legislative Assembly that conducts value-for-money and financial audits of the provincial government, its ministries and agencies. We also audit organizations in the broader public sector that receive provincial funding, such as hospitals and long-term-care homes, universities and colleges, and school boards. In 2019, our mandate was expanded to include reporting on the operation of the Environmental Bill of Rights, 1993, including reviews of any environmental matters our Office considers appropriate. Our work helps ensure that taxpayers receive value for their tax dollars.

Bonnie Lysyk (MBA, FCPA, FCA, LPA) is the Auditor General.


Welcome to our new colleagues from the former Office of the Environmental Commissioner (ECO).

As of April 1, 2019, the ECO became part of our Office. This change occurred under Schedule 15 of the Restoring Trust, Transparency and Accountability Act, 2018.

See answers to frequently asked questions regarding this change. Visit the ECO’s archived website to access reports and other publications issued by it up to March 31, 2019.

For more about our environmental work, visit What We Do.

What’s New

October 30, 2019

Special Audit of the Tarion Warranty Corporation Special Audit of the Tarion Warranty Corporation

Report (2.9Mb)
News Release


December 5, 2018

2018 Annual Report Volume 1 Auditor General releases the 2018 Annual Report 2018 Annual Report Volume 2

2018 Annual Report
2018 Annual Report News Releases and Summaries


September 27, 2018

Special Audit of the Niagara Peninsul;a Conservation Authority Special Audit of the Niagara Peninsula Conservation Authority

Report (5.1Mb)
News Release


April 25, 2018

Review of the 2018 Pre-Election Report on Ontario's Finances Review of the 2018 Pre-Election Report on Ontario’s Finances

Report (3.2Mb)
News Release