Ottawa mortgage calculator
What an Ottawa mortgage costs each payment, how long it runs, what it costs in total, and how much sooner it ends if you pay a little more. Built on the Canadian semi-annual convention, so the numbers match what a lender will quote you — and it charges you Ontario's sales tax on the insurance premium, which most calculators quietly forget.
The purchase
20.0% down. The minimum on this price is $38,400.
Lenders qualify you at the higher of this rate plus two points and 5.25% — 6.34% here, a payment of $3,348.30.
The contract length, not the amortization. At the end of it you renew at whatever rates are then available.
Paying it down faster
Most lenders cap annual prepayments at 10–20% of the original principal, and charge a penalty above it. Check your own commitment before planning around a large lump sum.
Where the money goes, year by year
Early payments are almost all interest. The crossover — the year principal finally exceeds interest — is the real shape of an amortized loan, and it is much later than most people expect.
Show the first two years of the schedule
| Payment | Amount | Interest | Principal |
|---|---|---|---|
| 1 | $2,762.28 | $1,818.00 | $944.28 |
| 2 | $2,762.28 | $1,814.62 | $947.66 |
| 3 | $2,762.28 | $1,811.22 | $951.06 |
| 4 | $2,762.28 | $1,807.81 | $954.47 |
| 5 | $2,762.28 | $1,804.39 | $957.89 |
| 6 | $2,762.28 | $1,800.96 | $961.32 |
| 7 | $2,762.28 | $1,797.51 | $964.77 |
| 8 | $2,762.28 | $1,794.06 | $968.22 |
| 9 | $2,762.28 | $1,790.58 | $971.70 |
| 10 | $2,762.28 | $1,787.10 | $975.18 |
| 11 | $2,762.28 | $1,783.61 | $978.67 |
| 12 | $2,762.28 | $1,780.10 | $982.18 |
| 13 | $2,762.28 | $1,776.58 | $985.70 |
| 14 | $2,762.28 | $1,773.04 | $989.24 |
| 15 | $2,762.28 | $1,769.50 | $992.78 |
| 16 | $2,762.28 | $1,765.94 | $996.34 |
| 17 | $2,762.28 | $1,762.37 | $999.91 |
| 18 | $2,762.28 | $1,758.79 | $1,003.49 |
| 19 | $2,762.28 | $1,755.19 | $1,007.09 |
| 20 | $2,762.28 | $1,751.58 | $1,010.70 |
| 21 | $2,762.28 | $1,747.96 | $1,014.32 |
| 22 | $2,762.28 | $1,744.32 | $1,017.96 |
| 23 | $2,762.28 | $1,740.67 | $1,021.61 |
| 24 | $2,762.28 | $1,737.01 | $1,025.27 |
Derived from the figures above, not a lender's statement. A real schedule also depends on your closing date and the lender's rounding.
Why the Canadian number is different
A Canadian fixed-rate mortgage compounds twice a year, not twelve times, even though you pay monthly. That single convention is the reason a calculator written for the American market overstates the payment. On a $500,000 loan at 5% over 25 years the Canadian payment is $2,908.02; run the same loan with monthly compounding and you get $2,922.95. Fifteen dollars a month sounds trivial and comes to more than $4,000 over the amortization.
Ontario taxes the insurance premium, in cash, at closing
This is the Ontario-specific line that catches people out, and the reason the numbers above will not match a calculator built for Alberta or BC. If you put down less than 20% the lender requires mortgage default insurance, and the premium — 4.00% of the loan at the minimum down payment — is added to the mortgage and paid off over 25 years. The 8% provincial sales tax on that premium is not. It is due in cash on closing day, alongside the land transfer tax and the lawyer.
On the $634,000 benchmark home the minimum down payment is 5% of the first $500,000 plus 10% of the rest, or $38,400. That triggers a premium of $23,824, which goes into the loan, and $1,906 of Ontario retail sales tax, which does not. Budget for it separately, because a lender will not lend it to you.
Accelerated payments are not a trick of the arithmetic
A regular bi-weekly payment is the amortized payment converted to a fortnightly schedule; it finishes at the same time a monthly one would. An accelerated bi-weekly payment is the monthly payment cut in half and paid twenty-six times a year — thirteen monthly payments' worth of money instead of twelve. The shorter amortization is not clever compounding, it is simply paying more. On a benchmark-priced Ottawa home with 20% down, that one setting takes the loan from 25 years to about 21.8 and saves roughly $47,700 in interest.
The term is not the amortization
The amortization is how long the loan takes to disappear. The term is how long your rate is locked — five years, usually. At the end of it you renew whatever is left at whatever rates exist then, which is why the calculator shows the balance at the end of the term as prominently as the payment. On a $507,200 principal you would still owe about $444,115 after five years, and a one-point move at renewal would add roughly $287 a month to the payment.
What this cannot tell you
A lender qualifies you at the higher of your rate plus two points and 5.25%, so the payment you can afford and the payment you must qualify for are different numbers; both are shown above. Property tax, condo fees, heat and home insurance are not in the payment either — and in Ottawa the property tax line deserves particular care, because Ontario still assesses on 2016 values and the rate on your bill is not a rate on what you paid. Neither is Ontario's land transfer tax, which adds $9,155 at closing on a benchmark-priced home, or $5,155 if you qualify for the first-time-buyer refund. For those, and for the comparison against renting, use the rent versus buy calculator.
Sources
- MLS® Home Price Index — Ottawa Real Estate Board, July 2026 · Canadian Real Estate Association / Ottawa Real Estate Board · retrieved Supports: Composite MLS® HPI benchmark of $634,000 in July 2026, down 0.5% year over year, Single-family benchmark of $725,000, up 0.7% year over year, Townhouse and row benchmark of $542,500, down 5.1% year over year, Apartment benchmark of $385,500, down 5.2% year over year, 1,325 sales and 4,678 active listings in July 2026
- Rental Market Survey — Ottawa, average rent by bedroom type, October 2025 · Canada Mortgage and Housing Corporation · retrieved Supports: Ottawa average purpose-built rents of $1,332 studio, $1,593 one-bedroom, $1,916 two-bedroom and $2,090 three-bedroom-plus, An overall average of $1,743 across 89,170 purpose-built units, Year-over-year increases of 3.4% on one- and two-bedroom units and 3.9% overall, Average rent of $2,320 in buildings completed in 2000 or later against $1,529 in buildings from before 1960
- Rental Market Statistics Summary — Ottawa (CV), October 2025 · Canada Mortgage and Housing Corporation · retrieved Supports: City of Ottawa purpose-built vacancy rate of 2.9% across 86,550 units, City of Ottawa average rent of $1,741 and median rent of $1,675
- 2026 Tax Policy and Other Revenue Matters · City of Ottawa, Revenue Services · retrieved Supports: Ontario's last province-wide reassessment was completed in 2016 and municipalities rely on 2016 assessment values for the 2026 tax year, The average urban Ottawa home is assessed at $415,000, A 2026 net municipal increase of $184 on that home — $166 from the 3.75% budget increase and $18 from the multi-residential ratio change, The 2026 budget was approved on 10 December 2025 with a 3.75% overall municipal tax increase, Ottawa's 2025 average municipal taxes on a representative two-storey detached house were $5,490, the lowest of Ontario's ten largest municipalities
- Education property tax rates · Government of Ontario · retrieved Supports: The residential education tax rate of 0.153% of assessed value, unchanged since 2020
- Premium information for homeowner and small rental loans · Canada Mortgage and Housing Corporation · retrieved Supports: Mortgage default insurance premium rates by loan-to-value
- Regulations amending the Insurable Housing Loan Regulations and the Eligible Mortgage Loan Regulations (SOR/2025-55) · Canada Gazette, Part II · retrieved Supports: The $1.5 million insured price cap, 30-year amortization for first-time buyers and new builds
- Minimum qualifying rate for uninsured mortgages · Office of the Superintendent of Financial Institutions · retrieved Supports: The qualifying rate of the contract rate plus two points, or 5.25%
- Interest rates charged for new and existing lending by chartered banks · Bank of Canada · retrieved Supports: The default mortgage rate of 4.34%, uninsured five-year-plus fixed, funds advanced May 2026
- Calculating Land Transfer Tax · Ontario Ministry of Finance · retrieved Supports: Provincial transfer tax brackets, The conditional 2.5% band
- Municipal Land Transfer Tax rates and fees · City of Toronto · retrieved Supports: Toronto municipal transfer tax brackets, First-time buyer rebate
- Residential rent increases · Government of Ontario · retrieved Supports: 2026 rent increase guideline of 2.1%, The 2018 occupancy exemption
- Retail Sales Tax · Government of Ontario · retrieved Supports: 8% retail sales tax on insurance premiums
These are estimates built from published figures, not a lender quote, a pre-approval or financial advice. Rates, premiums and provincial rules change; confirm anything you plan to act on with a mortgage professional and read the sourcing methodology.