Key Takeaway

Mortgage portability lets you transfer your existing mortgage, including your current interest rate and remaining term, from one property to another when you move. This feature can save thousands in prepayment penalties and protect a low rate if you secured favourable terms before rates climbed. However, portability is not automatic, comes with strict timing and approval conditions, and may involve blended rates or additional fees if your new home costs more than your current one.

What is Mortgage Portability?

Mortgage portability is a feature included in many Canadian mortgage contracts that allows you to take your existing mortgage with you when you sell your home and buy another. According to the Financial Consumer Agency of Canada, this means you keep the same interest rate, remaining term, and lender without triggering the prepayment penalty you would normally face for breaking a closed mortgage early (FCAC, 2026).

Portability is particularly valuable when you have a fixed-rate mortgage with a rate significantly lower than current market rates. Instead of paying an interest rate differential (IRD) penalty, which can run into tens of thousands of dollars on a large mortgage, you transfer the balance to your new property and continue under the original terms for the remaining portion of your mortgage term.

How Portability Works in Canada

To use mortgage portability in Canada, you must typically complete the sale of your current home and the purchase of your new home within a short window, usually 30 to 120 days depending on your lender. The Canada Mortgage and Housing Corporation notes that timing coordination is critical, as missing the deadline often means losing the portability option and facing penalties (CMHC, 2026).

If your new home costs more than the outstanding mortgage balance on your old home, you will need to borrow additional funds. Most lenders blend your existing rate with the current market rate for the new portion, resulting in a blended rate that sits between the two. If your new home costs less and you cannot port the full balance, you may have to pay a penalty on the portion you cannot transfer, as covered in foundational texts such as Principles of Finance.

You must also re-qualify for the mortgage at your new property under current lending rules, including the Office of the Superintendent of Financial Institutions (OSFI) mortgage stress test. Even though you are porting an existing mortgage, the lender will reassess your income, credit, debt ratios, and the new property’s appraised value to ensure you meet approval requirements.

Costs and Restrictions

While portability avoids the prepayment penalty, it is not completely free. Expect to pay:

  • Legal and discharge fees on your old property (typically C$300 to C$600).
  • Legal and registration fees on your new property (C$800 to C$1,500 or more).
  • A potential appraisal fee for the new home (C$300 to C$500).
  • A blended rate or administrative fee if you increase the mortgage amount.

Read also: Mortgage Prepayment Penalties in Canada: IRD vs Three Months Interest

Portability is offered only by the same lender. You cannot port your mortgage to a different financial institution. If you want to switch lenders for better terms or service, you will need to break your existing mortgage and pay the applicable penalty.

Not all mortgage products are portable. Variable-rate mortgages, while often portable in theory, may carry smaller penalties to break, making portability less attractive. Always confirm portability terms in your mortgage contract before assuming the feature is available, as conditions and fees vary by lender and product.

When Portability Makes Sense

Portability is most beneficial when you have several years remaining on a fixed-rate term with an interest rate well below current market rates. For example, if you locked in a five-year fixed rate at 2.5 per cent in 2021 and rates have since climbed to 5 per cent, porting that mortgage can preserve significant savings over the remaining term.

It is less useful if you are near the end of your term (within six months of renewal) or if current rates are similar to or lower than your existing rate. In those cases, breaking the mortgage and securing a new rate at market terms may offer better flexibility and lower total costs. Always compare the prepayment penalty against the benefit of keeping your current rate, and consult a licensed mortgage broker to model both scenarios for your specific situation.

Conclusion

Mortgage portability in Canada can be a powerful tool to keep a low rate and avoid costly prepayment penalties when you move, but it requires careful timing, lender approval, and an understanding of the costs involved. Before relying on portability, confirm the feature is in your contract, understand your lender’s conditions, and compare the savings against the option of breaking your mortgage and refinancing. For personalized guidance on whether portability fits your circumstances, speak with a licensed mortgage professional or contact the Financial Consumer Agency of Canada at canada.ca.

Financial Disclaimer: This article provides general educational information only and is not personalized financial, lending, legal, or tax advice, nor an offer or commitment to lend. Mortgage portability rules, fees, timing windows, and eligibility requirements vary by lender, product, province, and your individual circumstances. Interest rates and lending conditions change frequently. For advice specific to your situation, consult a licensed mortgage broker, your financial institution, or the Financial Consumer Agency of Canada. The author and publisher assume no responsibility for decisions made based on this information.