The Ontario Government has announced that the 2020 Assessment Update has been postponed. The province has indicated that property assessments for the 2021 taxation year will continue to be based on the fully phased-in January 1, 2016 current values (i.e., the same valuation date in use for the 2020 taxation year).

In 2016, we mailed a Property Assessment Notice to every property owner in the province – assessing more than five million properties in Ontario. Your 2016 Notice reflects the assessed value and classification of your property as of January 1, 2016 and this will be used as the basis for calculating your 2021 property taxes.

https://mpac.ca/en/UnderstandingYourAssessment/2020AssessmentUpdate