Switching mortgage lenders means moving your existing mortgage from one lender to another, usually at the end of your term. It is not the same as refinancing, which rewrites the loan itself, and the difference determines what it costs and how much paperwork is involved.

Switching mortgage lenders means moving your existing mortgage from one lender to another, most often at the end of your term, but sometimes mid-term. It is not the same thing as refinancing, which rewrites the loan itself. In Canada, a straight switch at renewal is often the cheapest route to a better rate, but the saving only holds up if you count the penalty, the fees, and any co-signer or collateral-charge complications before you sign.

Here is the sequence most switches follow.

1. Read your current mortgage contract. Find the term, the rate type (fixed or variable), the amortization, your prepayment privileges, and the prepayment penalty formula. Note whether your mortgage is registered as a standard charge or a collateral charge, because that affects how easily it can be transferred.
2. Ask your current lender for a written payout statement. It should show the balance, the penalty if any, the discharge or assignment fee, and how long the quote is valid. Penalty quotes expire, so request a fresh one before you commit to a funding date.
3. Get a written commitment from the new lender. Compare rates and, just as importantly, compare what each lender pays for: appraisal, legal or notary fees, title insurance, and discharge costs. Ask whether the mortgage is portable and how the penalty is calculated if you break it later.
4. Check whether you have to requalify. A straight switch with the same balance and amortization at a federally regulated lender generally is not subject to the mortgage stress test again, but changing the amortization, adding to the balance, or moving to certain provincially regulated lenders usually means full requalification.
5. Sign the documents and set the funding date. The new lender's lawyer or notary discharges the old charge and registers the new one. You will need identification, proof of property insurance, and sometimes a signed direction to pay out the old mortgage.
6. Keep your payments and insurance running until the switch completes. Do not cancel pre-authorized debits or let your home insurance lapse. Update the loss payee on your policy once the new lender funds.
7. Confirm the old mortgage was discharged. Follow up with your lawyer and, if needed, the provincial land registry to make sure the previous lender's charge is removed from title. Do not assume it happened automatically.

Switching and refinancing are not the same thing

A switch moves the mortgage to a new lender while keeping the debt broadly as it is: same balance, same amortization, same remaining term. A refinance replaces the mortgage with a new one, which lets you borrow more, lengthen or shorten the amortization, consolidate other debts, or change from a fixed to a variable rate. Some lenders use the word transfer for a switch, and a mortgage assumption, where a buyer takes over a seller's existing mortgage, is a different transaction again. The Financial Consumer Agency of Canada overview of mortgages is a useful starting point for the general rules that apply to both.

Feature	Switch (transfer)	Refinance
What changes	The lender, and usually the rate	The lender and the loan terms: rate, term, amortization or balance
Balance and amortization	Stay the same	Can change; borrowing more is common
Penalty	Usually none at renewal; a penalty applies mid-term	Penalty on the existing mortgage unless the new lender covers it
Stress test	Generally not re-applied to a straight switch with the same amortization at a federally regulated lender	Applies, because the loan is new or larger
Typical legal work	Discharge of the old charge and registration of the new one	Same, plus a new appraisal and often a new title search
Best used for	A better rate or service on the same debt	Accessing equity, consolidating debt, or changing the payoff timeline

What switching actually costs

The headline rate is only one line in the calculation. Ask for every number in writing before you decide.

• Prepayment penalty, if you leave mid-term. On a fixed rate it is typically the greater of three months' interest or the interest rate differential; on a variable rate it is typically three months' interest. The formula lives in your mortgage documents, and the interest rate differential can be severe on a long fixed term when rates have fallen.
• Discharge or assignment fee. Charged by the outgoing lender to release its charge. Each lender sets its own amount, so it must be quoted, not guessed.
• Land registry or land title office fees. These vary by province and by whether the transfer is filed electronically.
• Appraisal or property valuation. Sometimes required by the incoming lender, sometimes waived.
• Legal, notary, or title insurance costs. Many lenders cover these on a straight switch, but only if the commitment says so in writing.
• Adjustments. You pay interest up to the payout date, plus any property tax the old lender advanced on your behalf.

As a rough test, an interest-rate saving of 0.25 percentage points on a $400,000 balance is worth about $1,000 a year in interest before the balance declines. If you have two years left on the term, that is roughly $2,000 of gross saving, and a mid-term penalty of $3,000 plus fees would leave you behind. The smaller your balance and the shorter your remaining term, the harder it is for a mid-term switch to pay off. Our loan payment calculator can help you model how a rate change affects the payment.

What can block or complicate a switch

• A collateral charge mortgage. Many mortgages, especially those bundled with a home equity line of credit, are registered as collateral charges. They can be more expensive to move because the old lender may have to discharge the charge rather than assign it.
• A co-signer or guarantor. The new lender has to assess everyone on the application, and the paperwork takes longer. The outgoing lender also has disclosure obligations to joint borrowers.
• Equity and property value. If your loan-to-value ratio is high, values in your area have fallen, or an appraisal comes in low, the new lender may ask for more documentation or decline the file.
• Income documentation. Self-employed borrowers, recent job changes, and rental income all require more paperwork, which can push you past your renewal date.
• A penalty bigger than the saving. Run the numbers before you give notice, because once you commit to a payout date you are usually bound to it.

Timing: the renewal window is where the savings usually are

At maturity, most mortgages can be switched without a prepayment penalty, which is why the weeks before renewal are the most valuable. Start about 90 to 120 days out. That is enough time to compare offers, obtain a payout statement, and complete the legal work without pressure.

A renewal statement from your current lender is an offer, not an obligation. If you do nothing, the mortgage may roll into a new term at the lender's posted rate or into a more expensive default or open arrangement. If you are switching mid-term instead, treat the penalty as part of the purchase price: sometimes it is still worth paying, and sometimes it is not.

Rate holds are worth checking too. A lender may hold a rate for a set period while your file is processed, which protects you if rates move before funding. Policy rates and bond yields published by the Bank of Canada feed into fixed mortgage pricing, so it helps to know which direction the market has been moving.

Co-signers, guarantors, and joint borrowers

If someone co-signed or guaranteed your mortgage, they are part of the credit decision, and the new lender will want their consent and documents. Federal rules require lenders to give joint borrowers certain information about a loan, as set out in the FCAC guidance on disclosure to joint borrowers. One point that surprises people: switching lenders does not remove a co-signer from the obligation. A co-signer is released only if the lender agrees, usually through a refinance or an assumption where the remaining borrower qualifies alone. If you are trying to unwind a co-signing arrangement, start with our guide to what a co-signer is and how the obligation works.

Do the math before you commit

Compare the total cost of switching, including penalty, discharge fee, registry fees, appraisal, and legal costs, against the interest you expect to save over the remaining term. A lower payment is not the only measure: stretching the amortization can reduce the payment while increasing the total interest you pay.

Weigh the terms of the switch, not just the rate. Look at prepayment privileges, the penalty formula, portability if you might move, whether the lender permits a second charge, and whether you may want to refinance later. Federally regulated lenders operate under OSFI's mortgage rules, while some credit unions and provincial lenders fall under provincial regulation, which can change what is available. If your goal is to combine a mortgage switch with other borrowing, compare it against alternatives first, including options described in our page on loans for borrowers with weaker credit.

Common mistakes to avoid

• Signing the renewal offer before shopping around, because the first offer is rarely the best one.
• Accepting a verbal penalty quote instead of a written payout statement with an expiry date.
• Forgetting that a collateral charge can make the switch cost more than the interest saved.
• Letting the funding date fall after the term ends, which can push you onto a default rate.
• Cancelling home insurance or pre-authorized payments before the new mortgage funds.
• Assuming a switch removes a co-signer from the mortgage, when only the lender can release them.
• Comparing rates only, and ignoring penalty formulas, portability, and prepayment privileges.
• Failing to confirm the old lender's charge was discharged from title.