Fixed versus variable mortgages: what the rate does not tell you

A fixed contract rate does not change during its term. That provides payment certainty, but it does not make every fixed mortgage equivalent. Term length, prepayment privileges, discharge penalties, insurance status and product eligibility still matter.

A shorter fixed term can have a different displayed rate from a longer term and exposes the borrower to a different renewal date. Compare both the scheduled payment and the time period over which the rate is locked.

A variable or adjustable product is often stated as lender Prime plus or minus a spread. Some products change the scheduled payment when Prime changes, while others change how much of a fixed payment goes to interest and principal. The lender’s current product wording controls.

The directory preserves a published formula in the rate label when it is available. A calculated current percentage can become stale when Prime changes even if the spread remains valid.

Use today’s evaluated rate for a payment illustration, but preserve the Prime formula and label the result as variable. Compare the same mortgage amount and amortization, then consider whether different terms or qualification rules make the products non-equivalent.

Do not rely on a single forecast about future interest rates. Instead, understand the payment behaviour, budget tolerance, conversion terms and cost of leaving the mortgage before the term ends.

Public rate tables often summarize rather than reproduce every condition. Open the source to confirm payment frequency, prepayment privileges, portability, conversion rights and applicable fees before acting on a comparison.