A switch takes the existing balance, on an amortization no longer than what remains, and simply moves it to a different lender at renewal. A refinance is any transaction that changes the deal itself: more money advanced, a longer amortization than what remains, or a restructuring of the mortgage's terms beyond a straightforward carry-forward. The two are judged by entirely different rules, and the line between them is the loan amount and the amortization schedule — nothing else.
A refinance is always uninsurable in Canada, full stop, regardless of how much equity the borrower holds — a client refinancing with 40% equity is treated the same way, for insurability purposes, as one with 21%. This is one of the more counterintuitive facts in Canadian mortgage lending, and it is precisely why turning a switch into a refinance by adding even a modest amount of new money can move a client out of an insured rate tier entirely, not just into a slightly different one.
A genuine straight switch, by contrast, generally carries its existing insured or insurable status forward with it, because nothing about the underlying transaction — the balance, the amortization, the property — has changed. The insurer's original decision on that file travels with the mortgage rather than being reopened.
A straight switch is typically the cheaper transaction: legal costs are lower, especially on a standard-charge mortgage, a new appraisal isn't automatically required, and there's no new insurance premium to absorb since insured status carries forward. A refinance brings a fuller legal process, frequently a new appraisal, and — if the loan-to-value crosses into uninsurable territory — materially different pricing than the client may be expecting based on comparing headline rates alone.
None of this makes a refinance the wrong choice when the client's actual goal requires one. It means the cost comparison a broker gives a client needs to include these structural differences, not just the advertised rate on each option.
A client who needs equity out to consolidate higher-interest debt, fund a renovation, or cover an unrelated expense has a goal that a straight switch cannot serve — no amount of clever structuring turns a request for more money into a transaction that doesn't add to the balance. In these cases the broker's job isn't to talk the client out of a refinance to save them the extra legal cost; it's to make sure they understand the real cost of the refinance clearly enough to decide whether the goal is worth it, and to run the comparison against the alternative of a separate, smaller product (like a line of credit next to an unchanged mortgage) where that might actually serve the goal more cheaply.
Two questions settle almost every case. First: does the client need any new money, for any purpose, beyond a modest allowance for the transaction's own legal costs? If yes, it's a refinance. Second: does the client need the amortization extended beyond what currently remains? If yes, same answer. If both answers are no, and the transaction is happening at or near renewal, a straight switch is available and is almost always the lower-cost path to the same lender-shopping outcome.
A client at renewal wants to move to a new lender for a better rate and also wants an extra $15,000 for a kitchen renovation. What transaction is this, and what does that mean for insurability?
Adding any new money to the balance makes this a refinance regardless of the client's other motives or how much equity they hold — refinances are always uninsurable in Canada, which is exactly the counterintuitive point this module exists to make clear. Sequencing the extra funds as a separate transaction shortly after the switch doesn't change the substance of what's happening and shouldn't be presented to a client as a way around the rule.
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