You've got extra cash sitting in your account. Should you throw it at your mortgage? Or invest it instead?
Most Canadian homeowners don't realize they could shave years off their mortgage — and save tens of thousands in interest — with a few strategic moves. But here's the thing: paying down your mortgage early isn't always the smartest play. Sometimes your money works harder elsewhere.
What Are Your Prepayment Privileges?
Prepayment privileges let you pay down extra principal without triggering penalties. Most Canadian lenders allow 10–20% of the original principal as a lump sum each year, plus 10–25% increases to your regular payment.
These privileges reset annually on your mortgage anniversary date. Unused room doesn't roll over. CMHC data shows penalties can run into thousands if you exceed your prepayment cap on a fixed mortgage.
Should You Switch to Accelerated Bi-Weekly Payments?
Accelerated bi-weekly payments are the simplest way to knock years off your mortgage. Instead of 12 monthly payments, you make 26 bi-weekly payments — effectively 13 months of payments per year.
Regular bi-weekly just splits your monthly payment in half. Accelerated bi-weekly takes your monthly amount, divides by two, and pays that every two weeks. The extra payments hit your principal directly.
On a $500,000 mortgage at 4.50% over 25 years, switching to accelerated bi-weekly saves roughly $38,000 in interest and pays the mortgage off 3 years early. That's with zero lifestyle change.
How Much Do Lump Sum Payments Actually Save?
A lump sum payment — from a tax refund, bonus, or savings — goes straight to principal. Even modest amounts compound over decades.
Let's say you have that same $500,000 mortgage at 4.50%. A $5,000 annual lump sum saves $48,000 in interest and cuts 4 years off your amortization. A $10,000 annual lump sum? You'll save $85,000 in interest and pay off the mortgage 7 years early.
Can You Increase Your Monthly Payment?
Most lenders let you boost your regular payment by 10–25% each year without penalty. Small increases add up fast.
For example: on a $500,000 mortgage at 4.50% with a $2,756 monthly payment, increasing by 10% ($276 more per month) saves approximately $55,000 in interest and pays the mortgage off 4 years earlier.
If you get a raise or pay off another debt, redirect that money to your mortgage payment. You won't feel the squeeze because your income already covered it elsewhere.
When Should You NOT Pay Off Your Mortgage Early?
Paying down your mortgage isn't always the smartest move. Here's when your money works harder elsewhere.
You Have Unused TFSA or RRSP Room
If your mortgage rate is 4.5% but you can earn 6–8% in a diversified portfolio, the math favors investing. TFSA gains are tax-free. RRSP contributions generate a tax refund.
According to the Bank of Canada, variable rates have averaged higher returns than fixed mortgage rates over 20-year periods. That's a tailwind for long-term investors.
You Carry Higher-Interest Debt
If you're paying 20% on a credit card or 8% on a line of credit, pay those off first. The interest on that debt is eating you alive compared to your 4.5% mortgage.
Bottom line: always knock out higher-rate debt before accelerating your mortgage. It's not even close mathematically.
Prepayment Penalties Exceed the Benefit
Going beyond your prepayment privileges on a fixed mortgage triggers penalties — often thousands of dollars. The penalty can wipe out the interest savings entirely.
Stay within your annual limits or wait until renewal to make a large paydown. If you want maximum flexibility, understanding open vs closed mortgages can help you choose the right product.
What's Better: Paying Off Your Mortgage or Investing?
Let's run the numbers. Say you have $10,000 to deploy each year. You're choosing between prepaying your 4.5% mortgage or investing in a TFSA earning 7% annually.
After 20 years, prepaying saves roughly $85,000 in interest. Investing at 7% grows to $410,000. That's a $325,000 difference.
Here's the thing: if you invest and use the gains to pay off your mortgage at maturity, you end up debt-free with a pile of cash. If you prepay, you're mortgage-free but broke.
Common mistake: most homeowners assume paying off debt always beats investing. It doesn't. The rate difference matters more than the emotional win.
Frequently Asked Questions
Can I pay off my mortgage early without penalty in Canada?
Most Canadian mortgages allow 10–20% annual lump sum prepayments and 10–25% payment increases without penalty. Exceeding these limits on a fixed mortgage triggers breakage fees, often thousands of dollars.
How much faster will I pay off my mortgage with accelerated bi-weekly payments?
On a $500,000 mortgage at 4.50%, switching to accelerated bi-weekly payments pays the mortgage off roughly 3 years early and saves $38,000 in interest. You're making one extra month of payments per year.
Should I pay off my mortgage or max out my TFSA first?
If your expected TFSA return exceeds your mortgage rate by 2% or more, investing usually wins. A 4.5% mortgage vs a 7% TFSA return means you'll build $325,000 more wealth over 20 years by investing $10,000 annually.
Ready to take the next step? Arch Canada can match you with a broker.
