Oakville property tax

An Oakville tax bill is not one tax. It collects for three bodies at once: the Town, the Region of Halton, and the school boards. The Town does the billing and the collecting, but only one portion of what you pay stays with the Town. That is why a Town budget increase and the increase on your bill are different numbers.

The bill itself is built from two things: the assessed value that the Municipal Property Assessment Corporation assigns to your property, and the tax rate set for your property class. Multiply the two and you have the year’s taxes.

The residential rate is expressed as a percentage of assessed value. At the 2026 final residential rate of 0.850960 per cent, every $100,000 of assessment produces $850.96 in taxes for the year.

So a property assessed at $800,000 is charged eight times that, or $6,807.68 for the year, split across the instalments below. Your own assessment is on your bill and on the assessment notice MPAC sends you, and it is not the same as what the property would sell for today.

The interim bill arrives at the end of January, before Council has set the year’s tax rate. So the Town cannot bill the real number yet. Instead the interim bill restates the previous year’s budget requirements: your assessment times an interim rate based on last year, divided by two.

The final bill at the end of May is where the year’s actual rate appears. It is calculated on the new rate for the full year and then reduced by what you already paid on the interim bill, which is why the two halves of a year are rarely equal.

If your property is newly built, or you have made physical changes to it, you may receive an additional bill outside the normal cycle. These supplementary and omitted bills can be retroactive for the current year and the two years before it, and they arrive at various dates. A new home in north Oakville is the most common reason an Oakville household sees one.

Council received the 2027 budget forecast in June 2026. Staff put the preliminary overall tax bill increase at 4.97 per cent, and Council endorsed a Mayoral Direction asking them to find options closer to forecast inflation of 2.1 per cent.

Neither number is settled. The budget will be considered in early 2027, by a Council elected on 26 October 2026, and there will be public input before then. Our story on the 2027 budget direction sets out the process and the deadlines.

Tax rates, due dates, payment options, rebates and assistance, assessment appeals and the property tax portal are all on the Town’s Property Tax and Assessments pages. Assessment questions, including how a value was arrived at, go to the Municipal Property Assessment Corporation rather than the Town.

All figures on this page come from the Town of Oakville. See our sources.