Blend-and-extend vs
breaking your mortgage:
which lowers your cost?
Blending skips the penalty — but mixes your old rate with today's. Breaking pays the penalty — but gets today's rate on your full balance. We run both in dollars so you know which wins.
Four factors that decide
blend vs break.
The deciding number is always total cost in dollars over the same horizon — not adjectives like “penalty-free.”
What happens to the break penalty
Blend-and-extend avoids a separate penalty cheque — but lenders can bake the equivalent cost into a less-favourable blended rate. Breaking pays the penalty explicitly, as a visible number you can compare against your savings.
The rate you end up with
Blending produces a weighted average of your current rate and today's — so most of your balance stays at your old, higher rate. Breaking gives you today's full market rate on your entire balance.
Whether you can switch lenders
A blend-and-extend keeps you with your current lender — you can't shop the market. Breaking your mortgage lets you move to any lender, which can mean a meaningfully better rate or terms.
How easy the true cost is to see
Breaking shows you a clear penalty number. Blending can obscure the cost inside the blended rate — especially when lenders price the blend off their posted rates rather than actual discounted rates.
How to decide
blend or break.
Penalty first, total cost second,
decision last. That order matters.
Get your exact penalty
Ask your lender for the precise break penalty: 3 months' interest on a variable, or the greater of 3 months' interest or the Interest Rate Differential (IRD) on a fixed. This number anchors everything.
Compare total dollars
Run two totals over the same horizon: total interest under the blend-and-extend, versus the penalty plus total interest on a new mortgage at today's market rate. Also ask whether your lender uses posted or actual rates to calculate the blend.
Get an independent read
An independent broker has no stake in keeping you with your current lender. We'll run both scenarios with your actual numbers and show you which path genuinely costs less — then handle the one that wins.
Which is right
for you?
Tap any situation below to see which path we'd recommend and why.
If you’re…Rates dipped a little and you want to borrow more mid-term
Rates dipped a little and you want to borrow more mid-term
Your existing balance keeps its decent rate, the new money is priced at today's rate, and you skip a separate penalty. A blend-and-extend is typically the cleaner mid-term top-up in this case.
Run my blend numbersIf you’re…Rates dropped significantly since you signed
Rates dropped significantly since you signed
Today's rate on your whole balance can save more than the penalty costs — especially on a large balance. Compare in dollars: breaking often wins when the rate gap is 0.75% or more.
Calculate my savingsIf you’re…You're on a variable-rate mortgage
You're on a variable-rate mortgage
The variable penalty is just three months' interest — often a few thousand dollars. That makes breaking to capture a lower rate very frequently the cheaper move, even without a large rate gap.
See my variable penaltyIf you’re…You want to switch to a different lender
You want to switch to a different lender
A blend keeps you with your current lender, full stop. If another lender offers a materially better rate or product features, breaking is the only path. Weigh the switch savings against the penalty.
Compare lendersIf you’re…You're not sure if your lender blends off posted or actual rates
You're not sure if your lender blends off posted or actual rates
Posted-rate blending inflates your effective blended rate — the 'no penalty' deal quietly costs more than it appears. We'll identify your lender's method and rerun the comparison using the right formula.
Let us check your blendIf you’re…Your current rate and today's rate are roughly the same
Your current rate and today's rate are roughly the same
Blending changes little when rates haven't moved. A blend is still useful if you need to borrow more mid-term; otherwise, waiting for renewal avoids transaction costs on both paths.
Try the calculatorBlend-and-extend vs
break: every factor.
Neither path is always better. The winner changes based on how far rates have moved and your specific balance.
- Today's rates are somewhat lower than yours
- You want to borrow more mid-term without breaking
- You'd rather avoid a large upfront penalty
- You're comfortable staying with your current lender
- Today's rates are much lower than your current rate
- The rate savings clearly exceed the penalty
- You want to switch lenders or restructure fully
- You're on a variable (small 3-month-interest penalty)
| Factor | Blend-and-extend | Break & refinance |
|---|---|---|
| Break penalty | Avoided (or absorbed into the blended rate) | Paid upfront (3 months' interest or IRD) |
| Rate you end up with | A weighted blend of your rate + today's | Today's rate on the entire balance |
| Best when rates are | Somewhat lower than yours | Much lower than yours |
| Borrow more mid-term? | Yes — common reason to blend | Yes — included in the new mortgage |
| Switch lenders? | No — stays with current lender | Yes — free to shop the market |
| Transparency | Lower — penalty can be hidden in the rate | Higher — penalty is an explicit number |
| New term | Resets / extends your term | Fresh term of your choosing |
| Watch out for | Posted-rate blending, weak blended rate | A large IRD on fixed mortgages |
Break when rates dropped a lot.
Applies to Canadian mortgages. Your lender's penalty formula and blend pricing method affect the outcome. Try the blend-and-extend calculator.
Common questions,
clear answers.
Penalty math, blended rates, posted vs actual — answered plainly.
Should I blend or break my mortgage?
Blend-and-extend if today's rates are only somewhat lower than yours or you want to borrow more mid-term — you avoid a separate penalty and keep your existing rate on most of the balance. Break and refinance if today's rates are much lower, since taking today's rate on your entire balance can save more than the penalty costs, especially on a variable. Compare both in total dollars, because a blend's 'no penalty' can hide the cost in a higher blended rate.
Is blend-and-extend really penalty-free?
Not exactly. You avoid an upfront penalty cheque, but lenders often bake the equivalent cost into a less-favourable blended rate, so you may pay it over the new term instead. Ask for the effective blended rate and whether the lender prices it off actual or posted rates (a posted-rate blend costs you more), then compare it against simply breaking and taking today's market rate. 'No penalty' doesn't automatically mean cheapest.
What is a blended mortgage rate?
It's a weighted average of your existing rate (on your current balance) and today's rate (on new money or the portion being re-priced), combined into one rate when you blend-and-extend. Because most of your balance keeps your old rate, a blend can leave you above the market rate you'd get by breaking — which is why it's worth comparing the two directly rather than assuming blending is best.
When is breaking my mortgage cheaper than blending?
Usually when rates have fallen significantly since you signed, because breaking lets you take today's low rate on your entire balance — and that saving can exceed the penalty. It's also often cheaper on a variable mortgage, where the penalty is just three months' interest, and when you want to switch lenders for a better deal (which a blend, locked to your current lender, doesn't allow). Run the dollars-to-dollars comparison to be sure.
How do I compare blend vs break?
Compare two totals over the same horizon: the total interest under the blend-and-extend, versus the break penalty plus the total interest on a new mortgage at today's market rate. Whichever is lower wins. Include any new money you need, and on fixed mortgages estimate the IRD carefully since it can be large. An independent broker can run this neutrally because they have no stake in keeping you with your current lender.
We’ll try to beat your rate.
If we can’t, we pay you $500.¹
¹ Rate Beat: eligible Big-6 bank written offers only · same product, term & amount · $500 paid to you or your nominated charity at closing · conditions apply
Find a mortgage specialist in your city
Blend-and-extend and break calculations work the same across Canada — but the right path depends on your specific balance, lender, and rate. Talk to a local advisor who knows your market and can run your exact numbers.