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Canadian Mortgage

Canadian mortgage calculator with legally-correct semi-annual compounding, CMHC insurance premiums, and accelerated bi-weekly payment comparison.

✓ Tested formula & cited sources Formula verified 2026-01-15 Runs in your browser — inputs never sent anywhere

See it worked out

Example — Property Price (Asking Price) 750000, Down Payment 75000, Annual Interest Rate (Fixed) 5.25 %:

Monthly Payment

$5,573.73

Total Mortgage Principal

$695,925.00

CMHC Premium (3.10% on 90.0% LTV)

+$20,925.00 added to principal

Effective Annual Rate (semi-annual compounding)

5.3189%

Total Interest Paid Over Life of Loan

$307,345.83

Total Cost (Principal + Interest)

$1,003,270.83

Actual Time to Payoff

15.00 years

Land Transfer Tax (Alberta)

No provincial LTT ($0)

The formula

Effective Annual = (1 + r/2)² − 1 | Periodic Rate = (1 + Effective Annual)^(1/m) − 1 | Stress Test Rate = max(Contract + 2%, 5.25%)

r
Stated Annual Rate
Effective Annual
Effective Annual Rate
m
Payments Per Year
CMHC
CMHC Insurance
LTV
Loan-to-Value
Stress Test
Stress Test Rate
LTT
Land Transfer Tax

Worked example — Property Price (Asking Price) 750000, Down Payment 75000, Annual Interest Rate (Fixed) 5.25 %

Monthly Payment = $5,573.73

Full explanation ↓

How Canadian Mortgage Works

Effective Annual = (1 + r/2)² − 1 | Periodic Rate = (1 + Effective Annual)^(1/m) − 1 | Stress Test Rate = max(Contract + 2%, 5.25%)

Canadian fixed-rate mortgages are compounded semi-annually not in advance by law (Interest Act, Section 6). This differs fundamentally from US mortgages (monthly compounding), making US calculators inaccurate for Canadian mortgages. The B-20 stress test determines how much you can borrow (you qualify at the higher rate but pay the lower contract rate). Land Transfer Tax is a provincial/municipal progressive-bracket closing cost.

r
Stated Annual Rate — The advertised mortgage rate (e.g. 5.25%).
Effective Annual
Effective Annual Rate — True annualized rate after semi-annual compounding.
m
Payments Per Year — Monthly = 12, semi-monthly = 24, bi-weekly = 26.
CMHC
CMHC Insurance — Default insurance for <20% down (0.6%–4.0% of loan).
LTV
Loan-to-Value — Loan ÷ Property. >80% = insured mortgage.
Stress Test
Stress Test Rate — Qualifying rate = max(Contract + 2%, 5.25%).
LTT
Land Transfer Tax — Progressive provincial/municipal tax paid at closing.
Canadian mortgages are compounded semi-annually (not monthly like the US), require a stress test to qualify, and may include costly Land Transfer Tax at closing

How to Use

  1. Enter the property price and your down payment.
  2. Select your province for a dynamic Land Transfer Tax estimate.
  3. Pick an amortization period (max 25 years if <20% down).
  4. Enter your quoted fixed interest rate.
  5. Choose a payment frequency — compare Monthly vs Accelerated Bi-Weekly to see savings.
  6. Toggle the Mortgage Stress Test to see your qualifying rate and max affordable price.
  7. Review the Land Transfer Tax breakdown — a significant closing cost.

Common Uses

  • •Calculate monthly mortgage payments for a Canadian home including semi-annual compounding, land transfer tax, and provincial rules.
  • •Compare standard monthly payments versus accelerated bi-weekly payments to see how much interest and time you save over the amortization.
  • •Determine your maximum affordable home price under the Canadian mortgage stress test using the contract rate plus qualifying rate.

Understanding the Result

Accelerated bi-weekly payments are the single biggest "free win" in Canadian mortgages. By paying half your monthly amount every two weeks, you make 26 half-payments = 13 full monthly payments per year — one extra principal-only payment. On a $500K mortgage at 5.25%, this saves 3–5 years and $30K–$60K+ in interest. The stress test determines how much you can borrow, not what you pay. Land Transfer Tax is a major closing cost (e.g., ~$11,500+ in Ontario on an $800K home) that first-time buyers often underestimate.

Frequently Asked Questions

Why are Canadian mortgages compounded semi-annually?
Section 6 of the federal Interest Act of Canada requires mortgage rates to be compounded no more than semi-annually. A quoted 5% Canadian rate is cheaper than a 5% US rate (monthly compounding) because the effective annual rate is lower. Always use a Canadian-specific calculator.
How does the Mortgage Stress Test work?
B-20 requires lenders to qualify borrowers at max(contract rate + 2%, 5.25%). If your rate is 4.5%, qualifying rate = 6.5%. You pay 4.5% but must prove you could afford 6.5%. This reduces your max affordable price. Toggle the Stress Test on to see this.
What is Land Transfer Tax and how much is it?
LTT is a provincial (sometimes municipal) tax on property purchase, calculated with progressive brackets. On an $800K Ontario home: ~$11,475 provincial + up to ~$11,475 Toronto municipal = ~$23K. First-time buyers in Ontario get up to $4,000 rebate, BC up to $8,000. Select your province for a precise estimate.
Accelerated bi-weekly or regular bi-weekly?
Accelerated. Regular divides annual total by 26 (same total cost). Accelerated is half your monthly payment every 2 weeks = 13 monthly payments/year. The extra payment goes 100% to principal, saving 3–5 years and $30K–$60K+ in interest on a typical mortgage.
When is CMHC insurance required?
When down payment < 20%. Premiums range from 2.8% (15–19.99% down) to 4.0% (5–9.99% down). The premium is added to the mortgage principal — no lump-sum payment required. CMHC protects the lender, not you.

Sources

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Cite this calculator

TheCalcUniverse. "Canadian Mortgage Calculator — Semi-Annual Compounding & CMHC." TheCalcUniverse, 2026, https://thecalcuniverse.com/finance/canadian-mortgage-calculator/. Accessed July 27, 2026.

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