Glossary
Blend and Extend
Combining your existing mortgage rate with a current market rate to extend your term early, usually before maturity and often with a penalty..
A blend and extend combines the interest rate on your existing mortgage with a current rate to create one blended rate, while lengthening your mortgage term before it matures. In Canada it is arranged with your current lender, since it rewrites the mortgage contract you already hold, and a prepayment penalty often applies when the change happens mid-term.
How the blended rate is calculated
Lenders start with the balance owing at your existing rate, then add the rate they would offer on a new term today. The two rates are weighted by time — how much of the current term remains compared with the length of the new term — so the blended rate normally lands somewhere between the old rate and the new one. It is not a simple average of posted rates, and each lender's formula differs slightly. Because the loan is extended rather than paid out, the lender keeps the mortgage on its books, which is why any charge is typically smaller than breaking the contract and signing elsewhere. Where an interest rate differential would otherwise apply, many lenders substitute a simpler three-months'-interest style charge.
When borrowers use it
- To lock in a new term earlier than the maturity date, rather than waiting to renew.
- To move from a variable rate to a fixed rate, or the reverse, partway through a term.
- To reset prepayment privileges by starting a fresh term.
- To avoid the cost and paperwork of discharging one mortgage and registering another with a different lender.
Blend and extend versus renewal versus refinance
A blend and extend happens before maturity, so it usually carries a penalty. A renewal at maturity normally has no penalty, but it cannot be started early in the same way. A refinance changes the amount borrowed or draws on home equity, and it involves full underwriting, new documents, and possibly new default insurance. Comparing the numbers before you commit is worthwhile, and a mortgage penalty calculator can help you weigh the charge on a break against a blended offer. Rules vary: some lenders offer a blend only on fixed-rate closed mortgages, or only in the final months of a term, so confirm the details in your mortgage commitment before requesting one.
Frequently asked questions
Is a blend and extend the same as refinancing?
No. A blend and extend keeps your existing mortgage, balance and lender, and simply merges the old and new rates onto one extended term. A refinance replaces the mortgage, can change the amount borrowed, and requires full re-underwriting, new documents and often a new appraisal or default insurance. Penalties and fees differ between the two.
Does a blend and extend come with a penalty?
When it is done before maturity, most lenders charge a prepayment penalty, often three months' interest on a fixed-rate mortgage rather than an interest rate differential. The blended rate itself also reflects the trade-off between the old and current rates. Confirm your lender's exact charge, since formulas differ and some products allow a blend only near renewal.
Can I blend and extend with a new lender?
Generally no. A blend and extend is an internal change to the mortgage you already hold, so it stays with your current lender. Switching to a different lender means paying out the existing mortgage, which triggers any applicable prepayment penalty, then arranging a new mortgage through the new lender's approval process.
Sources
Related terms
- Mortgage Renewal — The point at which a mortgage term ends and the borrower negotiates a new term, rate, and conditions with a lender.
- Prepayment Penalty — A prepayment penalty is the charge a lender applies when you break a mortgage early or prepay more than your contract's prepayment privileges allow.
- Interest Rate Differential (IRD) — A penalty formula some Canadian lenders use when a fixed-rate mortgage is paid off early, based on the interest the lender loses.
- Mortgage Refinance — Replacing an existing mortgage with a new one, often to change the rate, term, or amortization, or to access home equity.
- Mortgage Switch — A mortgage switch moves your existing mortgage to a new lender at renewal while keeping the same balance, amortization, and payment structure.