Updated Checked by the Tax-Services.ca editorial team How we check
Property taxes in Ottawa are your assessed value multiplied by a municipal rate, plus your assessed value multiplied by a provincial education rate. On a home assessed at $450,000 with a combined rate of 1.1%, that’s $4,950 a year. The rate is the part you need from your own bill.
How Ottawa works out your bill
The City of Ottawa sets the municipal rate each year when council passes the budget. The province sets the education rate. Both apply to the value that MPAC, the provincial assessment agency, puts on your property.
That value isn’t what your house would sell for today. Assessments for the 2026 tax year still rest on January 1, 2016 values, because Ontario has kept postponing the province-wide update. So no, a neighbour’s big sale price last spring doesn’t raise your bill.
We couldn’t confirm Ottawa’s 2026 residential rate from the city’s own pages, so we won’t quote one. Every figure below uses a sample rate. Swap in the total from your bill (the municipal and education lines added up) in the property tax calculator.
What does a bill look like at different rates?
Here’s how a $450,000 assessment behaves as the combined rate moves.
| Combined rate | Tax per year | Per month |
|---|---|---|
| 0.75% | $3,375 | $281.25 |
| 1.10% | $4,950 | $412.50 |
| 1.20% | $5,400 | $450.00 |
Each tenth of a percentage point is worth $450 a year on this house, which is why a small rise in the rate matters more than it sounds when you look at the annual total and not the monthly change.
Say Sam in Kanata has a home assessed at $600,000. At the same 1.10% sample rate, the year’s tax is $6,600, or $550 a month if you set money aside. Run your own figures through the calculator and you’ll see how fast a bigger assessment moves the total.
On the $450,000 house, a rise of 0.1 percentage points adds $450 a year, which works out to a bit more than a loonie a day. Not a fortune, but it adds up over the years you own the place.
When are Ottawa property taxes due?
Two main bills arrive each year, and both are easy to miss if you rely on the mail. The interim bill is due on the third Thursday of March, and the final bill on the third Thursday of June. In 2026 those days were March 19 and June 18.
Pay late and the city adds a 1.25% penalty and interest charge the day after the due date, then again on the first day of each month. On a $2,700 bill that’s $33.75 for the first missed month. Partial payments go to interest and fees first, and only then to the oldest tax owing.
Mark both dates in your calendar the day you buy, and don’t count on a reminder in the mail. If you pay through your mortgage lender’s tax account, check that the amount they send matches the bill, because a change in the rate can leave the account short.
Why did my Ottawa property tax go up?
Three things can do it.
The city may raise its rate, the province may change the education rate, or your assessment may have changed because of a renovation or an addition. Council’s 2026 budget direction capped the increase in city taxes at 3.75%, but what you personally pay depends on all three pieces.
If you’re planning a purchase, the tax belongs in the monthly cost. Add it to the payment from the mortgage calculator. Condo buyers should also look at the condo ownership cost calculator, which adds fees to the tax. And on closing day, the land transfer tax calculator covers the separate one-time tax.
Mistakes and limits
- Using the sale price as the assessed value. Use the number on your MPAC notice.
- Leaving out the education part of the rate. Your bill shows both lines.
- Assuming the tax is the same for every property. Some classes, such as apartment buildings and businesses, use different rates. We haven’t covered them.
- Treating the estimate as your bill. Grants, credits and any special charges on your bill change the total.
Can’t find your rate? It’s printed on the bill.
How we checked the figures
The method, the due dates and the penalty come from the City of Ottawa’s property tax pages. The assessment basis comes from MPAC‘s assessment cycle page. Both were checked in September 2026. This site has no link with the city or with any government.
Frequently asked questions
How are property taxes calculated in Ottawa?
Assessed value times the municipal rate, plus assessed value times the education rate. The two lines make the bill.
When are Ottawa property taxes due?
The interim bill is due on the third Thursday of March and the final bill on the third Thursday of June. In 2026 that meant March 19 and June 18.
What is the penalty for paying Ottawa property tax late?
The city adds 1.25% penalty and interest the day after the due date and on the first day of each month after that.
Is my assessment based on today's market value?
No. For the 2026 tax year, MPAC still uses fully phased-in January 1, 2016 values.
What is Ottawa's property tax rate for 2026?
We couldn't confirm it from the city's own pages. Use the combined rate printed on your bill.
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