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Averaging of variations of values

The 2017-2019 property assessment roll of the Ville de Montréal came into effect on January 1, 2017.

To minimize the impact of this roll, the Ville de Montréal has adopted a resolution that provides the averaging of variations of values. These adjusted values are used to calculate your 2017, 2018 and 2019 taxes.

In 2017, one third of that difference has been added to or subtracted from your property’s previous value, whether your property value increases or decreases. Two thirds have been applied in 2018 and the entire value in 2019.

The following example shows how adjusted value is calculated for two properties. The value of one has dropped, while the value of the other has risen.

Icône tableau Averaging of variations of values over three years

Please note that the averaging of variations of values applies under certain conditions set out in an Act respecting Municipal Taxation.


(Date of updating: January 25, 2019)

For more information, please:

  1. Call your borough office;
  2. Call the 311 (island of Montréal) or 514 872-0311 (outside Montréal);
  3. Send us an e-mail.

The details contained here are for information only and have no legal value. The acts and by-laws posted on this site are for administrative purposes only, and although efforts are made to update them, they may not be the latest versions. Please check the sources before using the texts officially.