Mortgage Switch

A mortgage switch is the transfer of an existing mortgage to a new lender at renewal while keeping the same balance and amortization schedule. The loan amount does not change, no new money is advanced, and the equity in the home is not tapped. Only the lender, the rate, and the terms of the new mortgage term change.

Because the principal and amortization stay identical, a switch is a re-pricing exercise rather than a re-borrowing one. Lenders often promote switch offers near a mortgage renewal date, and the paperwork tends to be lighter than a full application because the mortgage is already in good standing.

Switch versus refinance

The distinction matters because it changes both cost and approval:

• Switch — same balance, same amortization, new lender. Often no new appraisal and minimal legal work.
• Refinance — the mortgage is rewritten to change the amount, the amortization, or both. Refinancing usually requires full re-qualification, and often a new appraisal and legal fees.

Adding even a small amount of new money, or extending the amortization, generally turns a switch into a refinance in the lender's eyes.

What a switch usually involves

At renewal, a switch typically requires the new lender to pay out the old mortgage and register a new charge on title. Some lenders cover discharge and registration costs as an incentive; others do not. Because the borrower is not breaking the contract early, a prepayment penalty usually does not apply — but that is only true when the switch happens on or after the maturity date. Switching partway through a term is treated as a payout and can trigger an interest rate differential charge.

Why it matters

Renewal is a lender's least competitive moment, because many borrowers simply sign the renewal letter that arrives in the mail. Shopping the same balance to another lender can lower the rate without changing the payment structure or the remaining years on the loan. The trade-off is administrative: the borrower coordinates the payout, confirms the old lender's discharge figures, and ensures no payment is missed during the transition. Running the numbers on a mortgage renewal calculator before signing anything makes the comparison concrete.

Eligibility rules still apply. A switch is subject to the receiving lender's underwriting standards, and for federally regulated lenders, OSFI Guideline B-20 and the federal mortgage stress test apply to the new mortgage. A borrower whose income or credit profile has changed since the original approval may not qualify on the same terms.