Ottawa property taxes and how assessments work — including why yours says 2016
Your property tax bill is your MPAC assessed value multiplied by two rates. The part that confuses everyone is the assessed value: Ontario's province-wide reassessment has been postponed for years, so assessments for the 2026 tax year are still based on 1 January 2016 values. What that means, what to do if the figure looks wrong, and what else is on the bill.