Property Assessments
What's on this page
↓Overview
↓Check your property assessment
↓Appeal your property assessment
↓Supplementary or omitted tax bills
↓How your property taxes are calculated
↓Newly built homes
↓School support designation
Property assessments determine your property’s value for tax purposes. In Milton, the Municipal Property Assessment Corporation (MPAC) assesses all properties, and these assessments are used to calculate your property taxes. Understanding your assessment can help you confirm its accuracy, compare it with similar properties, and decide if you need to take further action.
This page explains how to access your property information, appeal your assessment, and understand how assessments affect your tax bill.
MPAC provides an online tool called AboutMyProperty. This tool lets you:
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View details about your property
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Compare your assessed value to similar properties in your area
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Better understand how your assessment was determined
Access AboutMyProperty to view your property information.
If you believe your property assessment is incorrect, you can request a review or file an appeal. How you appeal depends on your property type.
You can submit a Request for Reconsideration (RFR) to MPAC to have your assessment reviewed.
If your property is residential or farm property, you must complete the Request for Reconsideration (RFR) process before filing an appeal. After the review you may:
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File an appeal with the Assessment Review Board (ARB) if you disagree with the MPAC’s decision
If your property is industrial, commercial, or multi-residential, you can:
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File an appeal directly with the Assessment Review Board (ARB), or
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Submit a Request for Reconsideration (RFR) instead of filing an appeal
Visit the Assessment Review Board (ARB) website for application forms and appeal details.
You can also contact MPAC at 1-866-296-6722 if you have questions about your assessment or appeal options.
The Town of Milton issues supplementary or omitted tax bills when MPAC updates your property’s assessed value. This may happen if new construction is completed; improvements are made to an existing property, or a property was not previously fully assessed. MPAC will send you a Property Assessment Change Notice showing the updated value, including information about appeal deadlines.
Supplementary bills may be issued at any time during the year. These bills are not separate from your regular tax bill, and payment is usually required in one installment.
Supplementary bills do not include previously billed or outstanding amounts. You may receive more than one bill covering different time periods, and if you purchased a newly built home, you may receive a bill for a prior period.
Your property taxes are based on your assessed value and the municipal tax rate.
Formula:
Assessment value × tax rate = tax amount due
Example:
$350,000 × 0.757464% = $2,651.12 (based on 365 days)
MPAC may assess your property for the current year and up to the previous two years, retroactive to the closing date.
If you move into a newly built home, you may not receive your full assessment right away. You will receive a Property Assessment Change Notice from MPAC once your property has been assessed, which may take up to three years. Under the Assessment Act, MPAC can assess new homes for the current year and up to two previous years.
Visit MPAC to learn more about property assessments for newly built homes.
As a property owner in Ontario, you are required to select a school board to support through your property taxes. By default, school support is directed to your municipality’s English Public School Board.
You can choose from four school support designations:
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English public
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French public
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English separate (Catholic)
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French separate (Catholic)
MPAC collects and maintains this information and shares it with school boards.
Visit MPAC to update or confirm your school support designation.