Blend and extend is a lender option that combines a mortgage’s existing contract rate with the current rate for a new, longer term, producing a single blended rate. Instead of charging a lump-sum prepayment penalty, the cost of breaking the old term is folded into the new rate.
Blend and extend is a lender’s alternative to charging a straight prepayment penalty when a borrower wants to renegotiate before the term ends. Instead of a lump-sum charge, the lender blends the old contract rate with its current rate for a new, longer term, producing one combined rate for the whole new term.
There’s no single public formula for the blend — each lender weighs the remaining time on the old term against the new term differently, which is why two lenders can quote different blended rates on the same file. It’s worth requesting the math, not just the final number.
The trade-off is convenience versus cost: blending avoids paying a prepayment penalty upfront, but the blended rate is usually higher than simply waiting for renewal or doing a full refinance at the going rate.
No standard formula: each lender calculates its own blended rate, typically weighting the remaining time on the old term against the new term at current rates — the exact method varies by lender.
Avoids an upfront penalty: compared with breaking the mortgage outright, blending avoids paying a lump-sum prepayment penalty at closing.
Can cost more over time: a blended rate is usually higher than simply waiting for renewal, so the trade-off is rate-lock timing versus total interest paid over the new term.
Who negotiates it: mortgage agents (Ontario, FSRA), submortgage brokers (BC, BCFSA), mortgage associates (Alberta, RECA), and courtiers hypothécaires (Quebec, AMF) compare blend-and-extend offers against a straight refinance or switch.
Definitions reflect Canadian federal and provincial rules as of the “Updated” date above. Not advice for any specific file.
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