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 Province on behalf of the school boards. The Town does the billing and the collecting, but only part 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 2026 residential rate of 0.850960 per cent is the combined rate. Of every $100 of residential property tax, about $43 goes to the Town, $39 to Halton Region and $18 to education.

The Municipal Property Assessment Corporation sets every assessed value, and the province has postponed the reassessment that would have updated them. The 2026 taxes are still based on what a property was worth on 1 January 2016. That is why most Oakville assessments are well below what the same homes would sell for today, and why multiplying a current sale price by the rate overstates the bill.

Your own assessed value is on your tax bill and on the last notice MPAC sent you. Questions about how it was set, and requests for reconsideration, go to MPAC rather than the Town.

Since 2026, the bill also carries a stormwater fee under Special Charges. It replaces the stormwater portion of the property tax and is a flat amount by type of home, not a percentage of assessment. It is being phased in, reaching the full rate in 2028.

The interim bill goes out early in the year, before Council has set the year’s rate, so it cannot bill the real number. Instead it uses an interim rate equal to half of the previous year’s final rate. For 2026 that was 0.417316 per cent, half of the 2025 rate of 0.834632 per cent.

The final bill in the spring 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.

The Town offers a rebate for eligible seniors, and Halton Region runs a deferral program for older adults and for low-income seniors and people with disabilities. Each has its own eligibility rules and application deadline, set out on the Town’s Tax Rebates and Assistance page and the Region’s property tax pages. Oakville has no vacant home tax.

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.

Payment options, the property tax portal, rebates and assessment appeals are on the Town’s Property Tax and Assessments pages. Halton Region also publishes a tax estimator. Assessment questions go to MPAC rather than the Town. For what else it costs and takes to live here, see Moving to Oakville.