Is a property tax assessment appeal worth it?

What a lower assessment would save in tax, against the fee, with the deadline for your province.

Ontario: valuation date January 1, 2016 — still used for the 2026 tax year.
Your tax bill ÷ assessed value × 100, or your municipality's published rate.
Multi-year rolls (Quebec 3 years) multiply the saving.
Tax saved if you win$360 a year$40,000 lower (6.3%) at 0.900%
Request for Reconsideration (RfR) fee
Free
Net over 1 year
$360
First deadline
March 31 of the tax year for the annual notice (the date printed on your notice); 120 days from the notice for other notices
Worth consideringThe tax saved covers the fee. Your evidence decides the outcome: sales of similar homes around the valuation date, and errors in the property facts. Ontario appeal guide.

Estimate, not advice. Educational estimate only, not financial, mortgage, tax or legal advice. Lenders, insurers and governments set their own rules and can change them; confirm with a licensed professional before you decide.

Saving about $360 a year; first-step fee $0; Ontario deadline: March 31 of the tax year for the annual notice (the date printed on your notice); 120 days from the notice for other notices.

Ontario: the steps
StepDeadlineFee
Request for Reconsideration (RfR)
MPAC		March 31 of the tax year for the annual notice (the date printed on your notice); 120 days from the notice for other noticesFree
Appeal to the Assessment Review Board (ARB)
Tribunals Ontario		90 days from the mailing date of MPAC's RfR decision$132.50 per residential appeal
Assumptions & sources

Assumptions

  • Saving = (assessed − your value) × tax rate. Phase-ins (Ontario) and tax-rate changes alter the real figure.
  • Deadlines and fees from Municipal Property Assessment Corporation (MPAC) and the appeal bodies, checked November 1, 2026. The date on your own notice always wins.

Sources

  1. MPAC — Notices and notifications (2026 valuation date). Checked .
  2. MPAC — Request for Reconsideration. Checked .
  3. Tribunals Ontario — Assessment Review Board FAQ (deadlines, $132.50 fee) (effective October 28, 2026). Checked .
  4. Town of LaSalle — Property assessments (2026 postponement). Checked .
Want a person to check these numbers?

Get help with your numbers

Free. A person from the MITEY network team replies by email; your message doesn't go to the site you're on.

Sent to the MITEY network team at Revalued.ca. We use it only to answer you. See the privacy notice.

Is an assessment appeal worth it? · Powered by Revalued.ca · MITEY