About Us

The Muncipal Property Assessment Corporation (MPAC) is an independent, not-for-profit corporation funded by all Ontario municipalities, accountable to the Province, municipalities, and property taxpayers through its 13-member Board of Directors.

Our role is to accurately assess and classify all properties in Ontario in compliance with the Assessment Act and regulations set by the Government of Ontario. Proudly Canadian, we are the largest assessment jurisdiction in North America, assessing and classifying close to 5.7 million properties with an estimated total value of approximately $3.2 trillion.