Canada Property Tax Assessment 2027: How Values Are Set and How to Appeal

Property tax = assessed value × mill rate (tax rate). The assessed value is set by a provincial or municipal assessment authority (MPAC in Ontario, BC Assessment in British Columbia, SMA in Alberta, etc.) and is typically updated annually or on a set cycle. The mill rate is set by the municipality each year based on its budget requirements. Example: assessed value $600,000 × mill rate 0.65% = $3,900/year in property tax. Mill rates vary significantly by municipality — a home with an identical assessed value in Toronto ($600,000 assessed × ~0.67%) pays about $4,020/year; the same assessment in Vancouver pays more because Vancouver's mill rate is higher relative to its high market values. Use your municipality's tax calculator or MPAC's property portal (Ontario) to look up your current assessed value.

MPAC (Municipal Property Assessment Corporation) is Ontario's independent, not-for-profit corporation responsible for assessing the value of every property in Ontario for property tax purposes. MPAC uses a Current Value Assessment (CVA) methodology based on market value — the price a property would sell for on the open market as of a specific valuation date. Ontario's current assessment cycle uses January 1, 2016 as the base year (the 2020 reassessment was postponed due to COVID and has not been formally conducted). This means many Ontario properties are assessed well below 2027 market values — which can be beneficial for homeowners but creates inconsistencies. MPAC notifies property owners of their assessment through the Property Assessment Notice. You can review comparable sales data on MPAC's About My Property portal at MPAC About My Property.

BC Assessment (British Columbia Assessment Authority) assesses all real property in BC annually as of July 1 of the previous year. Assessment rolls are released each January. BC Assessment uses a mass appraisal approach comparing sales, income (for income-producing properties), and cost (for unique properties). For residential properties, the primary method is sales comparison using neighborhood comparable sales. BC homeowners receive their assessment notice in early January — if the value has increased significantly, property taxes will increase at the next billing cycle unless the municipality holds the mill rate flat. BC Assessment assessment class codes also affect whether and how the assessment qualifies for homeowner grants. Review your assessment and comparable sales at BCAssessment.ca.

The appeals process varies by province: Ontario: file a Request for Reconsideration (RfR) with MPAC within 90 days of receiving your Property Assessment Notice; if unsatisfied, appeal to the Assessment Review Board (ARB) by March 31 of the tax year. BC: file a Notice of Complaint with BC Assessment by January 31 (notices are received in early January — you have a very short window). Alberta: file a complaint with the Assessment Review Board in your municipality by the deadline on your notice. Quebec: file with the Administrative Tribunal of Quebec (TAQ) within 60 days. For all provinces: (1) Document your case with recent comparable sales (ideally from the assessment valuation date); (2) Identify specific factual errors (wrong square footage, room count); (3) Consider hiring a property assessment consultant for large-value appeals. The MPAC appeals guide covers Ontario in detail.

Yes — in two ways: (1) Qualifying ratios: property taxes are included in the GDS (Gross Debt Service) ratio calculation for your mortgage. Higher taxes reduce the maximum mortgage you qualify for at renewal or new purchase. If your assessed value jumps significantly and taxes increase, your GDS ratio increases, potentially affecting your ability to renew with a new lender. (2) Tax arrears risk: if you miss property tax payments, the municipality can register a lien on the property that takes priority over the mortgage lender. Severe tax arrears can lead to tax sale proceedings. Most lenders collect property taxes through the mortgage payment (add 1/12 of the annual tax to each payment) to prevent arrears. If your lender pays taxes from escrow and the tax bill increases, your monthly payment will increase at the next escrow review. See the PITI glossary entry for how taxes affect your mortgage payment.

For a primary residence in Canada: property taxes are not deductible on your personal income tax return. There is no equivalent to the US mortgage interest deduction or property tax deduction for Canadian homeowners. However: (1) Home office expenses: if you work from home (T2200 from employer), you can deduct a portion of property taxes proportional to your home office space as an employment expense; (2) Rental properties: property taxes on rental properties are fully deductible as rental income expenses on Schedule of Rental Income; (3) Home Buyers' Amount: a first-time buyer federal tax credit of up to $1,500 (based on a $10,000 non-refundable credit at 15%) is available in the year of purchase — not an ongoing deduction. The CRA guide on employment expenses covers home office deductions.