Appraisal vs Property Tax Assessment
A property tax assessment is a mass-appraisal value produced by a provincial assessment authority for tax calculation — it lags the market, often uses an out-of-date base date, and cannot be used as evidence of current market value.
What's actually different
| Dimension | Appraisal | Tax Assessment |
|---|---|---|
| Effective date | Date you specify | Statutory base date (e.g., Ontario MPAC: 2016) |
| Methodology | Single-property direct comparison | Mass-appraisal regression model |
| Inspected? | Yes | Rarely |
| Defensible as market value? | Yes | No — only as assessed value |
| Used for | Lending, legal, tax planning, estate | Annual property tax calculation |
- •You need current FMV for any decision other than paying property tax.
- •Confirming your annual property tax bill.
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An appraisal is a documented opinion of value by a licensed professional based on inspection and comparable analysis. An AVM is a statistical estimate from sale records and property attributes — fast, cheap, and inappropriate for most legal, lender, and tax uses.
A CMA is a pricing tool prepared by a real estate agent to help a seller set a list price. It is not an independent valuation and is not accepted for lender, legal, or CRA reliance.
These are complementary — not substitutes. An appraisal estimates market value; a home inspection evaluates the physical condition of the building's systems.
A BPO is a price opinion provided by a real estate broker, typically for lenders managing distressed or REO assets. It is faster and cheaper than an appraisal but is not produced by a designated appraiser and is excluded from many regulated uses.
Appraisals come in three inspection scopes — full (interior + exterior), drive-by (exterior only), and desktop (no inspection, all data from records and photos). The scope must match the intended use.