Renewal, Refinance & Switching
Blend and Extend Mortgages in Canada
A blend and extend mortgage combines your existing rate with your lender's current rate and lengthens your term. See how the blended rate is calculated.
A blend and extend mortgage is a renewal option that merges the rate on your existing mortgage with your lender's current rate for a new, longer term, producing one blended rate applied to your whole balance. You often get a better rate than the renewal letter your lender mails you, and you normally avoid a prepayment charge because you are renewing early rather than breaking the contract. Your balance and amortization stay the same.
What a blend and extend mortgage does
As your term nears its end, your lender typically sends a renewal offer at its posted rate, which is usually higher than what a new borrower could negotiate. A blend and extend lets you act before maturity: you agree to a new term now, and the lender works out a single rate that reflects both the time left on your current term and the new term you are signing.
Because you are not paying the mortgage out, you generally sidestep the interest rate differential (IRD) or three-months'-interest charge that applies when you break a closed mortgage. That is the main attraction. The trade-off is that you commit to a new term, often longer than the months you had left, so you extend how long you would owe a prepayment charge if your plans change.
Blend and extend is most common on fixed-rate closed mortgages. If you hold a variable-rate mortgage, ask how your lender handles an early renewal, because the mechanism may be different. Minimum remaining term, eligible mortgage types and fees vary by lender, so confirm the details in writing before you agree to anything.
How the blended rate is calculated
The blended rate is a weighted average. Your lender weights your existing contract rate by the number of months remaining on your current term, and weights its current rate by the number of months you are adding. The longer your remaining term, the more your old rate pulls on the result.
Picture a mortgage with 24 months left that is extended into a new 60-month term. In that case, 24 months are weighted at your existing rate and 36 months at the lender's current rate. If today's rates are lower than yours, the blend pulls your rate down. If today's rates are higher, the blend softens the increase instead of applying the full new rate immediately.
| Input | Effect on your blended rate |
|---|---|
| Months remaining on your current term | More remaining months means more weight on your existing rate |
| Your existing contract rate | Gets more pull when the remaining term is long |
| Lender's current rate for the new term | Sets the rate for the extension portion |
| Length of the new term you sign | Longer terms add more months at the new rate |
Ask for the math in writing. A lender should show you the two rates, the two time periods, the resulting blended rate and any fees. Compare that number against the renewal offer you were sent and against what other lenders are advertising.
Blend and extend versus your other options
Blending is one of several paths near renewal, and each has a different cost profile.
| Option | What happens | Consider it when |
|---|---|---|
| Blend and extend | Stay with your lender, sign a new term early, get a weighted-average rate, normally no penalty | Rates have moved against you, or you want a lower rate without switching |
| Break and refinance | Pay a prepayment charge, then refinance, possibly at a new lender, and access equity | You need to borrow more, or the rate gap is large enough to cover the penalty |
| Wait for maturity | Do nothing, then renew or switch with no penalty | You are only a few months from the end of your term |
| Switch lenders | Move the mortgage at maturity for a better rate or features | Your lender's best offer still trails the market |
If you are weighing a switch, work through the steps to switch mortgage lenders and the fees involved. If you are weighing a refinance, the refinance break-even calculator shows how long it takes for a lower rate to recover the penalty.
When blending makes sense, and when it does not
- It can make sense when your remaining term is long, rates have risen, and you would rather lock in a blended rate than absorb the full increase at maturity.
- It can make sense when you want a lower payment soon and the lender waives the prepayment charge.
- Be careful if rates have fallen sharply. Blending keeps part of your old, higher rate in the mix, so a straight switch at maturity may beat it.
- Be careful if you may sell or refinance soon. Blending signs you up for a new term, and breaking that term later triggers a fresh prepayment charge, so read up on how the interest rate differential is calculated.
- Be careful if you need cash. A blend and extend does not increase your mortgage; only a refinance does.
Questions to ask before you sign
- What is the blended rate, and can you show me the calculation?
- How long is the new term, and does my amortization stay the same?
- Are there any fees, such as administration, discharge, appraisal or legal costs?
- What prepayment privileges come with the new term?
- What would I pay if I break the new term early?
- Would I have to re-qualify?
Get the answers in writing before you agree. A blend and extend with your existing lender for the same balance usually does not require you to re-qualify under the federal mortgage stress test, but increasing your mortgage, changing lenders or refinancing generally does. Under that test, lenders must confirm you could handle payments at the higher of your contract rate plus two percentage points or the published qualifying-rate floor, so confirm the current floor with OSFI or your lender. Lenders also review your GDS and TDS ratios.
How blending fits into renewal and refinancing
Treat a blend and extend as one tool in the renewal process, not the default. Start with the mortgage renewal guide to work through the full checklist, then price your options. If your goal is simply a lower rate, compare your lender's blended rate against market offers. If your goal is to borrow more or restructure other debt, look at refinancing a mortgage instead.
Run the numbers on the mortgage renewal calculator to compare payments side by side. Remember that a blend and extend is a negotiation, not a take-it-or-leave-it offer. Ask what else your lender can do on rate, term length or fees before you commit, and check whether a competing lender's renewal offer would come out ahead once any switching costs are counted.
Frequently asked questions
Is a blend and extend mortgage the same as a refinance?
No. A refinance pays out your existing mortgage, usually triggers a prepayment charge, and lets you change the balance, amortization or lender. A blend and extend keeps your existing mortgage in place, adds a new term and applies a weighted-average rate to the same balance. If you need to borrow more money, you need a refinance, not a blend.
Does a blend and extend trigger a prepayment penalty?
Usually not when you arrange it with your current lender, because you are not paying the mortgage out or breaking the contract. You are renewing early and signing a new term. That is the main advantage over breaking a closed mortgage, where an interest rate differential or three-months'-interest charge typically applies. Confirm in writing that no discharge or administration fee applies.
Can I blend and extend with a different lender?
Generally no. Blending works because your existing lender is extending the loan it already holds. Moving to a new lender means discharging the old mortgage, which normally triggers a prepayment charge, and then starting a fresh mortgage application. At maturity you can switch lenders without a charge, so compare that option before committing to a blend.
Will I have to pass the stress test for a blend and extend?
Often not, when you stay with your existing lender, keep the same balance and simply extend the term. Increasing your mortgage, refinancing or switching lenders usually means re-qualifying under the federal stress test, which uses the higher of your contract rate plus two percentage points or the published qualifying-rate floor. Confirm the current floor with OSFI or your lender.