The Right to Prepay: A Powerful Tool for Reducing Your Interest Costs
Among the fundamental rights of Canadian mortgage borrowers, the prepayment privilege is arguably the most underutilized. This contractual right allows you to repay a portion of your mortgage principal beyond your regular payments without penalty. When properly leveraged, it can save you tens of thousands of dollars in interest and shorten your amortization period by several years.
The Two Forms of Prepayment
- Annual lump-sum payment: Most lenders allow an annual lump-sum payment of 10% to 20% of the original loan amount. This amount is calculated on the original principal (not the current balance), meaning the eligible amount remains the same throughout the term. For example, on an original $400,000 loan with a 15% privilege, you can repay up to $60,000 per year without penalty.
- Regular payment increase: In addition to the lump-sum payment, most contracts allow you to increase regular payments by 10% to 20% (some lenders allow up to 100%). If your monthly payment is $2,400, a 15% increase would bring it to $2,760, an additional $360 per month applied directly to principal. Over a year, this represents $4,320 in additional principal repaid.
Concrete Impact on Your Mortgage
The effect of prepayments is amplified by compound interest mechanics. Every dollar repaid in principal today eliminates the interest that would have been calculated on that dollar for the entire remaining amortization period. On a $400,000 mortgage at 5% amortized over 25 years, total interest costs amount to approximately $296,000. By fully utilizing a 15% prepayment privilege during the first five years ($60,000 per year), you could reduce the amortization period by nearly 10 years and save over $120,000 in interest.
Prepayment Strategies
- Combine both privileges: use both the lump-sum payment and the payment increase to maximize your principal repayment. These two privileges are cumulative.
- Plan payments early in the term: prepayments made at the beginning of the term have a greater impact because the balance (and therefore the interest) is higher.
- Use the anniversary date to your advantage: privileges typically renew on the contract's anniversary date. Plan your lump-sum payments to maximize usage of each eligible period.
- Adjust your payment frequency: switching from monthly to accelerated bi-weekly payments generates the equivalent of one extra monthly payment per year, also reducing the amortization.