Ontario Homeownership Guide
Ontario property taxes are not simply a percentage of what you paid for your house. Municipal tax rates, MPAC assessment values, property classifications and local charges all play a role in determining the amount on a property tax bill.
Updated for the 2026 property tax year. Here’s how the system works and what Ontario homeowners and buyers should understand. If you’re preparing to buy, also review our 7 Ontario property costs and rules to check before buying.
The Short Answer
For many Ontario properties, a simplified property-tax estimate begins with:
Assessed Value × Applicable Tax Rate = Approximate Property Tax
However, actual municipal bills can also contain special charges, local levies, adjustments or other items. Always use the municipality’s actual tax bill when you need an exact figure.
Who Determines Property Taxes in Ontario?
Two different pieces are often confused:
- MPAC assesses and classifies properties.
- Municipalities establish municipal tax rates and issue property tax bills.
Education tax rates and other applicable components can also form part of the overall property tax calculation.
What Is MPAC?
The Municipal Property Assessment Corporation, commonly called MPAC, is responsible for assessing and classifying properties across Ontario.
An MPAC assessment is not a property tax bill. It provides an assessed value and classification that are used as part of the taxation process.
Learn more about assessments directly from MPAC.
What Assessment Value Is Being Used in 2026?
For the 2026 property tax year, Ontario property assessments continue to be based on fully phased-in January 1, 2016 current values.
This is particularly important for buyers because the assessed value shown for tax purposes can be substantially different from today’s market value or the property’s recent purchase price.
Does Buying a House Reset the Assessment to the Purchase Price?
No. A resale property’s MPAC assessment does not simply reset to the amount a buyer paid for it.
A property might sell for $800,000 while carrying an assessment based on a much lower January 1, 2016 value. That difference does not by itself mean the tax bill is incorrect.
Can an Assessment Still Change in 2026?
Yes. The province-wide reassessment postponement does not mean every property assessment is permanently frozen.
MPAC continues to update property information during non-assessment-update years. Changes such as new construction, additions, major renovations, demolition or a change in use can result in updated assessment information.
The property is still valued using the applicable legislated valuation date rather than today’s market date.
How Municipal Tax Rates Work
A municipality establishes tax rates as part of its budgeting and taxation process. Rates can vary by municipality and property class.
This means two houses with the same assessed value but located in different municipalities can have different property tax bills.
Example Property Tax Calculation
Suppose a home has:
- MPAC assessed value: $350,000
- Example combined tax rate: 1.25%
A simple estimate would be:
$350,000 × 0.0125 = $4,375 per year
That would equal approximately $364.58 per month when divided by 12.
This is only an illustration. Use the actual tax rate and assessment applicable to the property when estimating taxes.
Why Market Value and Assessment Value Can Look So Different
Ontario’s 2026 assessments continue to use the January 1, 2016 valuation date, while real estate continues to trade at current market prices.
As a result, buyers should not assume a lower MPAC assessment means a home is worth less, nor should they assume a high purchase price will immediately become the new assessment.
What Are Supplementary or Updated Assessments?
Changes to a property can sometimes generate new or amended assessment information.
This can matter when buying newer construction or a property that has undergone substantial changes. A current tax bill may not always reflect every future assessment or tax adjustment that could eventually apply.
Buyers of new or significantly altered properties should ask their lawyer, municipality and MPAC about potential assessment changes rather than relying only on the seller’s most recent tax bill.
When Are Property Taxes Due?
Payment schedules are established locally and differ across Ontario.
Some municipalities issue interim and final bills with several instalment dates during the year. Many also offer pre-authorized payment plans.
Use the applicable Ontario Home Intel municipal property guide or the municipality’s official website to verify local due dates.
What Happens to Property Taxes When a Home Is Sold?
Property taxes are commonly adjusted between buyer and seller on closing.
If the seller has paid taxes covering a period after the buyer takes ownership, the seller may receive a credit through the statement of adjustments. If taxes remain outstanding for the seller’s ownership period, the adjustment may work differently.
The lawyers handling the transaction determine the actual closing adjustment. Sellers budgeting for the transaction can also review what it costs to sell a house in Ontario.
Property Taxes When Buying a Home
Before purchasing, consider checking:
- The property’s current MPAC assessment
- The current annual property tax amount
- The municipality’s applicable residential tax rate
- Whether major renovations or additions have recently occurred
- Whether the property is newly constructed
- Whether there are special local charges or levies
- Whether the existing bill may be subject to later adjustment
Property Taxes and Renovations
Home improvements do not all affect assessments in the same way. However, changes such as additions, new structures or major renovations can cause MPAC to review and update property information.
If a project substantially changes the property, do not assume the existing tax bill will remain unchanged indefinitely.
Estimate Property Taxes
If you know the applicable assessment and tax rate, use the Ontario Home Intel Property Tax Calculator to estimate annual and monthly taxes.
FAQ
Ontario Property Tax Questions
Are Ontario property taxes based on the price I paid for my house?
Not directly. Municipal taxation uses the property’s applicable assessed value and tax rates. A resale purchase does not simply reset the MPAC assessment to the sale price.
What valuation date is Ontario using in 2026?
Property assessments for the 2026 property tax year continue to be based on January 1, 2016 current values.
Does MPAC set my municipal tax rate?
No. MPAC assesses and classifies properties. Municipalities establish municipal tax rates and issue property tax bills.
Can renovations change my property assessment?
They can. MPAC continues to update property information when circumstances such as new construction, major renovations, additions, demolition or changes in use affect a property.
Where can I find the exact tax rate for my city?
Check the municipality’s official tax information. Ontario Home Intel municipal guides can also help direct you to local tax, zoning and property resources.
Buying an Ontario home?
Property taxes are only one of the costs and due-diligence items to organize. Use the free 6-page Ontario Home Buyer Checklist from planning through closing.
Continue Your Research
General information only: Property assessments, tax rates, billing schedules, levies and municipal practices can change. This article is provided for general educational purposes and is not legal, tax, financial, appraisal or other professional advice. Verify property-specific information with MPAC, the applicable municipality and appropriate professionals before acting.
