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WP10

The Assessment Gap in Quebec

Vertical and Horizontal Inequity in Municipal Property Valuation: Evidence from 522,769 Sales Matched to the Assessment Roll

Simon-Pierre Boucher · UQO Working Papers · October 2026 · v1.1

Municipal property taxes are levied on assessed values, so any systematic relationship between assessment ratios and market value redistributes the tax burden within a municipality. This paper matches 522,769 residential sales recorded in Quebec between 2021 and 2026 to the triennial assessment rolls of 625…