The Municipal Property Assessment Corporation (MPAC) has been legislated to administer all information contained on the returned assessment roll, including owner's name/s, mailing address, legal description, property code, tax classes, and property assessment values.
For information regarding your property tax class and/or assessment value, visit MPAC's About My Property module. You will require a copy of your latest assessment notice on which you will find your user ID and password located in the bottom right corner of your notice.
All properties in the Province of Ontario are currently assessed at a January 1, 2016 assessment base value. These values have been determined through various means, the most common of which is real estate sale stats from arms-length sales - a sale between a willing buyer and a willing seller. In the event you do not agree with the information, assessment value, or tax class contained on your assessment notice and you wish to renegotiate the assessment value indicated on your notice please contact the Municipal Property Assessment Corporation directly.
Municipal Property Assessment Corporation
PO BOX 9808
Toronto, ON M1S 5T9
Telephone: 1.866.296.6722 1.877.889.6722 TTY