What is the process for disputing my tax assessment?
Disputing a tax assessment in Mississauga involves several steps. If an individual believes that the assessed value of their property is incorrect, they should first review the assessment notice that was sent from the Mississauga Tax Office. The notice typically contains details about how the assessment was calculated and the deadline for filing a dispute.
The next step is to prepare a written request for reconsideration, which should include the property address, the assessment roll number, and a clear explanation of why the individual believes the assessment is inaccurate. Supporting documentation, such as comparable property assessments or recent sales data, can also be beneficial.
This request needs to be submitted to the appropriate department within the specified timeline outlined in the assessment notice. The Mississauga Tax Office will review the dispute and may issue a revised assessment if warranted. If the resolution is still unsatisfactory, further appeals can be made to the Assessment Review Board. For additional details and contact information, individuals can refer to the Mississauga Tax Office web page.

Answered Oct 18, 2025
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