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Accelerated Bi-Weekly Mortgage Calculator
Simply switching from monthly to accelerated bi-weekly payments knocks 3–4 years off a 25-year mortgage with zero pain — your payment size barely changes. This calculator uses Canada's legally required semi-annual compounding formula, not the US monthly version.
Educational calculators — always consult a licensed professional before making financial decisions.
$140,000 of home price
Canadian mortgages compound semi-annually — our calculator handles this correctly.
30-year amortization available for insured mortgages on new construction under CMHC 2024 rules.
You save with accelerated bi-weekly
$78,286
Paid off 3 years 9 months sooner
Payment Comparison
Payoff Timeline
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What you'll need
- ·Home price and down payment
- ·Your mortgage interest rate
- ·Amortization period (20, 25, or 30 years)
What you'll get
- ✓Years saved — Off your amortization period
- ✓Interest saved — Over the life of the loan
- ✓Payment comparison — Monthly vs. accelerated bi-weekly
How it works
Enter home price, down payment, and rate
We calculate your exact Canadian semi-annual compounded mortgage payment — the legally required method for Canadian mortgages.
We calculate all three payment options
Monthly payment, regular bi-weekly (same annual total as monthly), and accelerated bi-weekly (one extra month's payment per year).
See years saved and total interest difference
Accelerated bi-weekly typically saves 3–4 years on a 25-year mortgage and tens of thousands in interest with no change to payment size.
Monthly vs Accelerated Bi-Weekly: $700,000 Home, 5.49%, 25yr
| Payment Type | Payment | Payoff | Total Interest |
|---|---|---|---|
| Monthly | $3,440 | 25.0 years | $332,000 |
| Regular bi-weekly | $1,720 | 25.0 years | $332,000 |
| Accelerated bi-weekly | $1,720 | 21.5 years | $284,000 |
Accelerated bi-weekly saves 3.5 years and $48,000 in interest. Payment amount is identical to regular bi-weekly.
Why Canadian payments differ from American ones
Canadian mortgage interest is compounded semi-annually, not in advance — a requirement of the federal Interest Act — while US mortgages compound monthly. At the same posted rate, the Canadian payment comes out slightly lower.
It is a small difference per month and a large one over an amortization, and it is why a US mortgage calculator gives the wrong answer for a Canadian mortgage. Every calculator on this site’s Canadian pages uses the semi-annual convention.
Term is not amortization
The amortization is how long the mortgage takes to pay off — commonly 25 years. The term is how long your current rate and contract last, usually one to five years. At the end of the term the balance comes due and you renew, at whatever rates exist then.
This is the structural difference from a US 30-year fixed, where the rate is locked for the whole amortization. A Canadian borrower re-prices every few years, which is why what happens at renewal matters as much as the rate you start on.
The stress test you have to clear
Federally regulated lenders must qualify you at the minimum qualifying rate — the greater of your contract rate plus 2% or 5.25% — under OSFI’s Guideline B-20. You are approved on that higher rate, not the rate you will actually pay.
Practically, it means the mortgage you qualify for is smaller than your real payment would suggest. Budgeting off the contract rate and then finding the approval short is one of the most common surprises for first-time buyers.
When mortgage insurance is mandatory
Put down less than 20% and mortgage loan insurance is compulsory, not optional. The premium runs from 2.8% of the loan at 15–19.99% down up to 4% at 5–9.99% down, and it is normally added to the mortgage rather than paid up front — so you pay interest on it for the life of the loan.
Two limits are worth knowing. Insurance is unavailable above $1.5M, so above that price 20% down is effectively mandatory. And in most provinces the PST on the premium must be paid in cash at closing — it cannot be rolled into the mortgage.
Since 15 December 2024, a 30-year insured amortization is available to all first-time buyers, whether resale or new build, and to any buyer of a new build. It lowers the monthly payment and raises total interest, and it carries a 0.2% premium surcharge — worth modelling both ways in the CMHC insurance calculator before choosing.
What the payment does not include
- Land transfer tax, due in cash at closing and charged twice in Toronto, where a municipal tax stacks on the provincial one. See the land transfer tax calculator.
- Property tax, set by your municipality and often collected by the lender alongside the payment.
- Condo fees, which lenders count against your qualifying ratios — commonly at 50% of the monthly fee.
- Legal fees, title insurance and the home inspection, all payable at closing from the same savings as the down payment.
About this calculator
What is the difference between regular and accelerated bi-weekly mortgage payments?+
Regular bi-weekly: you pay half your monthly payment every two weeks — 26 payments per year, the same annual total as monthly. Accelerated bi-weekly: you also pay half your monthly amount every two weeks, but because 26 × (monthly/2) > 12 × monthly, you effectively make one extra monthly payment per year. This is what cuts years off your mortgage.
How many years does accelerated bi-weekly save on a Canadian mortgage?+
On a 25-year mortgage at 5.49% with a $560,000 balance, accelerated bi-weekly typically saves 3–4 years and $40,000–$60,000 in interest. The exact savings depend on your rate, balance, and amortization.
Does accelerated bi-weekly work the same in Canada as the US?+
The concept is the same but the math differs. Canadian mortgages compound semi-annually (not monthly like US mortgages), so the interest calculation uses the formula: effective monthly rate = (1 + annual rate / 200) ^ (1/6) − 1. Our calculator uses the correct Canadian formula.
Can I switch to bi-weekly payments on my existing Canadian mortgage?+
Most Canadian lenders allow you to switch to bi-weekly or accelerated bi-weekly at no cost. Contact your lender or make the change through online banking. This is usually available outside of the term commitment with no penalty.
Want to try different numbers?
Back to the calculator ↑Accelerated Bi-Weekly Mortgage Calculator Canada is built and maintained by the RealCostIQ editorial team. Cost ranges and rates are checked against published industry data and contractor quotes, and revised when the underlying figures move. Read our data methodology or more about who builds this. Every calculation runs in your browser — no account, and none of your inputs are stored.
Cost ranges and rates here are checked against contractor quotes and published industry data. If a number still looks off, email Support@RealCostIQ.com and we'll review and fix it.