Canada Mortgage Refinancing Guide: Rules and Costs

What Is Mortgage Refinancing?

Mortgage refinancing involves breaking your current mortgage contract and replacing it with a new one. Homeowners typically refinance to access home equity (cash out), consolidate high-interest debts, or secure a lower interest rate.

Refinancing is different from renewing. Renewal happens at the end of your mortgage term, while refinancing can be done at any time, usually incurring a prepayment penalty if done before your term ends.

Prepayment Penalties: Fixed vs. Variable

If you refinance before the end of your term, your lender will charge a prepayment penalty. The calculation method depends on whether you have a fixed or variable rate.

For variable-rate mortgages, the penalty is typically three months' interest. For fixed-rate mortgages, the penalty is the greater of three months' interest or the Interest Rate Differential (IRD). The IRD compares your contract rate with current market rates and can be extremely expensive, sometimes costing tens of thousands of dollars.

• How Canada's IRD penalty is calculated, with numbers

Equity Take-Out Limits in Canada

Under Canadian banking regulations, you can refinance up to a maximum of 80% of your home's appraised value, minus your remaining mortgage balance.

For example, if your home is appraised at $500,000, the maximum total loan amount is 80% ($400,000). If you owe $250,000 on your current mortgage, you can cash out up to $150,000.

The Break-Even Test: When Refinancing Pays

Refinancing only makes sense if the savings outweigh the costs. The simple version of the test: divide the total cost of refinancing (penalty plus appraisal, legal, and discharge fees) by the monthly saving from the new rate. The result is the number of months until you break even.

Take an illustrative example. You owe $320,000 with 22 years left on the amortization, sitting in a 5-year fixed term at 5.49% with three years remaining. A new lender offers 4.79%. The monthly payment drops from about $2,079 to about $1,955, a saving of roughly $125 a month. If the prepayment penalty plus setup fees total $8,000, the break-even point is about 64 months, more than five years.

That is the trap: the break-even lands well after the three years remaining in your term. In that case refinancing mid-term would cost you money, and waiting for renewal, when there is no penalty, is usually the better move. Run your own numbers before you sign anything, and ask the lender for the penalty quote in writing first.

Refinance Costs Beyond the Penalty

The prepayment penalty gets the attention, but the smaller fees add up too. Most lenders charge a discharge or administration fee when a mortgage is paid out early, commonly a few hundred dollars. You will usually need a fresh appraisal ($300 to $500 is typical) and a lawyer or notary to register the new charge ($800 to $1,500 is typical), plus title insurance and provincial registration charges.

Some lenders run promotions that cover the appraisal or legal fees to win your business. Those offers can be genuine, but read the conditions: they sometimes require you to keep the mortgage for a minimum period or they claw the costs back if you leave early. Factor the conditions into your break-even test rather than treating the fees as free.

Porting: Take Your Mortgage to Your Next Home

If you are moving rather than chasing a lower rate, porting may beat refinancing entirely. Porting transfers your existing mortgage, with its rate and remaining term, to the new property. Because you are not breaking the contract, the prepayment penalty is usually avoided.

There are conditions. Most lenders require the sale and purchase to complete within a set window, often 30 to 120 days depending on the lender, and the new property must meet their lending criteria. If the new home costs more, you can usually blend the existing mortgage with additional funds at current rates. Ask your lender about portability before you list your home, because not every product allows it.

Blend-and-Extend: The Middle Option

Blend-and-extend is a compromise offered by many lenders when the IRD penalty is too large to swallow. You stay with your current lender, and they blend your existing rate with today's market rate into a new, longer term. The penalty is typically waived or sharply reduced because the lender keeps your business.

The catch is that the blended rate sits above the best rate you could get by switching lenders, since it is a weighted average of your old rate and the current offer. It suits borrowers who want immediate payment relief without paying a large penalty, but it is worth comparing the blended offer against the true cost of breaking and switching before you accept.

Refinancing at Renewal vs Mid-Term

At renewal, when your term ends, there is no prepayment penalty at all. That makes renewal the natural moment to switch lenders, change your amortization, adjust payment frequency, or consolidate debt. You can shop the full market without a penalty hanging over the decision.

Mid-term refinancing has to clear a higher bar: the monthly saving must repay the penalty and setup costs before your term ends, with enough margin left over to make the hassle worthwhile. A useful rule of thumb is that if the break-even point falls beyond your remaining term, wait for renewal. Your broker can model both timelines side by side.

Sources

The figures and policy details in this article come from the following primary sources, checked at the time of writing.

• Financial Consumer Agency of Canada
• Bank of Canada