Mortgage

Home Price ($)

Down Payment ($)

20.0% of purchase price

Interest Rate (%)

Nominal rate, compounded semi-annually per CAD law

Amortization Period

Insured mortgages: max 25 years. Uninsured: up to 30 years.

Payment Frequency

★ Accelerated pays the equivalent of one extra monthly payment per year — can save years and thousands in interest.

Start Date

Prepayment Options (optional — see savings impact)

Extra Per Payment ($)

Added to every regular payment. Typically limited to 10–20% increase/yr.

Annual Lump Sum ($)

Applied once per year to principal. Most lenders allow 10–20% of original balance.

Prepayments Start Year

Payment Amount

—

per month

Mortgage Amount

—

principal borrowed

Total Interest

—

% of borrowed

Total Cost

—

principal + interest

Mortgage-Free Date

—

actual amortization

Interest vs. Principal by Year

Principal

Interest

All Payment Frequencies — Side by Side

Frequency	Payment	Annual Total	Total Interest	Actual Amortization	vs. Monthly

Accelerated payments use the monthly payment amount divided by 2 (bi-weekly) or 4 (weekly), resulting in 13 "months" of payments per year instead of 12. This extra payment goes entirely to principal reduction, cutting years off your amortization and saving significant interest — without requiring a larger single payment.

Amortization Period Comparison (monthly payments)

As of December 15, 2024: insured mortgages (under 20% down, up to $1.5M) have a maximum 25-year amortization, unless the buyer is a first-time buyer or purchasing new construction, in which case 30 years is permitted. Uninsured mortgages have no maximum amortization set by Ottawa — lenders set their own limits.

Amortization Schedule

Year	Payment	Interest	Principal	Cumul. Interest	Balance

All calculations use Canadian semi-annual compounding mortgage math as required by the Interest Act. Actual payments may vary slightly by lender due to rounding, first-payment timing, and term renewal terms. This tool is for illustrative purposes — consult a licensed mortgage professional for a formal commitment.

Understanding Canadian Mortgage Amortization

In Canada, mortgages use nominal rates compounded semi-annually — not monthly like in the United States. This is mandated by the federal Interest Act and means the math is slightly different from US mortgage calculators. A 5.24% Canadian rate does not equal a 5.24% effective rate — you need to convert it properly, which this calculator does automatically.

Amortization vs. term: These are two different concepts that many buyers confuse. Your amortization period is the total time to pay off the mortgage (typically 25 years). Your term is how long your current rate is locked in (typically 5 years). At renewal, rates are renegotiated — your amortization simply continues from where it left off.

Accelerated Bi-Weekly Magic

Switching from monthly to accelerated bi-weekly is the single most impactful cost-free change most Canadians can make. You pay half your monthly amount every 2 weeks — 26 payments/year versus 24 — making the equivalent of one full extra payment per year, which cuts ~3–4 years off a 25-year mortgage and saves tens of thousands in interest.

Prepayment Privileges

Most Canadian closed mortgages allow you to prepay 10–20% of the original principal as a lump sum annually, and increase your regular payments by the same amount — without penalty. Open mortgages allow unlimited prepayment but charge higher rates. Check your specific lender's terms before making large lump-sum payments.

The 30-Year Amortization Rule

As of December 15, 2024, 30-year amortizations are available for insured mortgages for first-time home buyers and anyone purchasing newly-built homes. All other insured mortgages remain capped at 25 years. Uninsured mortgages (20%+ down) have no federal maximum — lenders typically offer up to 30 years, with some going to 35.

Term Renewal Strategy

At each 5-year renewal, your new rate is applied to the remaining balance for the remaining amortization. If rates have dropped, request a lower rate from your current lender — or shop around. Mortgage brokers can access 40+ lenders. Even 0.25% lower can save thousands over the remaining amortization.

Amortization FAQs

Canadian mortgages are legally required to use nominal interest rates compounded semi-annually, as specified in the federal Interest Act. American mortgages use monthly compounding. This means a 5% Canadian rate has a different effective rate than 5% American. The Canadian effective monthly rate is calculated as (1 + rate/200)^(1/6) − 1, which is slightly lower than the nominal rate divided by 12. This calculator uses the correct Canadian formula automatically.

On a typical $600,000 mortgage at 5.24% over 25 years, switching from monthly to accelerated bi-weekly saves roughly $35,000–$50,000 in interest and cuts approximately 3–4 years off your amortization. The savings come from making 13 "monthly equivalent" payments per year instead of 12 — the extra payment goes entirely to principal. Use the frequency comparison table in this calculator to see your exact numbers.

A prepayment privilege lets you pay down your mortgage faster without penalty, within set limits. Most Canadian lenders offer two types: (1) increase your regular payment by up to 10–20% per year, and (2) make a lump-sum payment of up to 10–20% of the original principal once per year. Both go directly to principal. Exceeding these limits on a closed mortgage triggers a penalty — typically 3 months' interest or the Interest Rate Differential (IRD), whichever is higher. Open mortgages allow unlimited prepayment but carry higher rates.

Yes — at renewal (typically every 5 years) you can renegotiate amortization, rate, and payment structure with your current lender or a new one. You can shorten the remaining amortization to pay off faster, or in some cases extend it (usually up to the original maximum) to lower payments. You can also trigger a refinance mid-term, though this incurs a prepayment penalty. Some lenders offer "blend-and-extend" options that let you adjust rate and term mid-contract without a full penalty.

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Mortgage Amortization
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