Rates aren't the only cost
Does the lower mortgage rate always cost less? Planning ahead in Ontario
Written by Stonefield Mortgage · Reviewed by David Steinfeld, principal broker · Stonefield Mortgage, FSRA mortgage brokerage licence #13722 · [review pending — before this page is indexed]
Published · Updated
Not always: for an Ontario homeowner, a lower rate costs less over a full term, but selling, moving or refinancing before the term ends can change the answer. When you leave early, a stricter penalty, smaller prepayment privileges or a mortgage that can't move with you can outweigh the rate saving. Which offer costs less depends on how long you'll keep the home, what you'll do when the term ends, and what the contract lets you do on the way.
When the rest of the contract matters as much as the rate
If you expect something to change during the term (a move in a few years, a growing family, a renovation, or a plan to pay the mortgage off sooner), the rest of the contract matters as much as the rate. If nothing will change for the whole term, the rate does most of the work.
A worked example of rate and penalty
Illustrative, not a quote. You borrow $500,000 in Ontario on a five-year fixed term with a 25-year amortization. Offer A's rate is 0.15 percentage points smaller than Offer B's. Offer A works out its prepayment penalty from posted rates; Offer B's penalty method is gentler.
Then your plans change and you break the mortgage after three years. The penalty figures are assumed for the example: about $9,000 for Offer A and about $4,000 for Offer B.
| What you compare | Offer A: smaller rate, posted-rate penalty | Offer B: higher rate, gentler penalty |
|---|---|---|
| Rate | 0.15 percentage points smaller | 0.15 percentage points higher |
| Interest difference over 3 years | about $2,200 less ($500,000 × 0.15 ÷ 100 = $750 a year, a little less each year as the balance falls) | about $2,200 more |
| Interest difference over 5 years | about $3,600 less | about $3,600 more |
| Penalty if you break at year 3 | about $9,000 | about $4,000 |
| Net if you keep it all 5 years | about $3,600 ahead: no penalty at maturity | about $3,600 behind |
| Net if you sell at year 3 and don't port | about $2,800 behind ($9,000 − $4,000 − $2,200) | about $2,800 ahead |
| Prepayment privileges (yearly lump sum % and payment increase %) | Ask: each is a percentage of the loan, set by the lender (typical, varies by lender) | Ask: compare both percentages line by line (typical, varies by lender) |
| Accelerated bi-weekly payments | Yes, typically: half the monthly payment every two weeks pays the loan off sooner | Yes, typically |
| Changing your payment date | Ask: many lenders allow it, some only a set number of times (typical, varies by lender) | Ask, as for Offer A |
| Portability, and what it costs | Ask: whether you can move it to a new home, the time limit, and the rate on any extra money (typical, varies by lender) | Ask, as for Offer A |
| More money later (an increase or a blend-and-extend) | Ask: often possible, priced at the time and subject to lender approval | Ask, as for Offer A |
| Reaching a person when plans change | Ask: who you call, and how quickly they answer | Ask, as for Offer A |
The real penalty depends on rates on the day. On request, a federally regulated lender gives you a written statement of the charge and how it is calculated (source: Financial Consumer Agency of Canada, checked October 2026).
A term that ends around the time you expect to move avoids the penalty question, because there is no prepayment penalty when a term ends. The trade-off is renewing sooner, at whatever rates are on offer then.
What the other lines of the table decide
The smaller rate wins if nothing changes, and can lose if your plans do. The other lines decide which offer wins:
- Prepayment privileges set how fast you can pay the mortgage down without a charge.
- Accelerated payments shorten the amortization at little effort.
- A payment date you can move keeps the mortgage in step with your pay.
- Portability decides whether a move costs a penalty.
- Borrowing more later decides whether you can reach your own equity without breaking the mortgage.
- A person you can reach when things change is worth knowing about before you sign, not after.
The tool below runs the money side on your own numbers. Results are estimates only, not an offer or advice.
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Enter the rate for structure A (and B, to compare) to see the cost over your hold. Nothing you type leaves your browser.
The structure questions, before the rate
- Term. A term that ends around the time you expect to move avoids the penalty question. Leaving before the term ends generally means a penalty: usually the higher of three months' interest or the interest rate differential (IRD) on a fixed mortgage (source: Financial Consumer Agency of Canada, checked October 2026), and commonly three months' interest on a variable one.
- Amortization is the total time to pay the loan off; a longer amortization lowers the payment, and you pay interest for longer. Insured mortgages can run to 30 years for first-time buyers and buyers of new builds, for insurance applications from December 15, 2024 (source: Department of Finance Canada, checked October 2026); more in 25 or 30-year amortization.
- Prepayment privileges. Each year, you may be able to raise your payments only by a certain amount and put only a limited lump sum toward the mortgage, and paying more than that means a penalty (source: Financial Consumer Agency of Canada, checked October 2026).
- Portability. Porting moves your mortgage to a new home, generally within the lender's time limits, and whether you can port depends on the lender. If CMHC insures your mortgage, the insurance can move with it at no extra premium when the new loan, its loan-to-value and its amortization are no larger than the current ones (source: CMHC, checked October 2026); default insurance portability has the detail.
- Fixed or variable. The penalty, not just the rate, differs. Fixed or variable and the fixed vs variable tool go further.
Invest or prepay?
The invest-or-prepay comparison depends on investment returns we do not forecast, so the choice is a question for your financial advisor. We show the mortgage half only: what a prepayment saves in interest and what the balance would be at renewal. The prepayment savings tool does that arithmetic.
Questions homeowners ask about planning ahead
- Does the lower mortgage rate always cost less? (Canada)
Not always. In Canada a slightly lower rate can cost more if you sell or refinance mid-term: the penalty method, prepayment room and portability count too.
- How long should my mortgage term be if I might move? (Ontario)
If you might move, many Ontario borrowers match the term to the move, or pick a mortgage they can port or break for less. The trade-off is renewing sooner.
- Should I prepay my mortgage or invest? (Canada)
In Canada, prepay or invest is a question for your financial advisor and accountant. The mortgage side: interest saved, privileges, penalties, liquidity.
- Should I take a 30-year amortization and keep the payment difference? (Canada)
In Canada a 30-year amortization lowers the payment and adds interest. Investing the difference is for your financial advisor; here is the mortgage side.
- What does a mortgage cost over the years I'll own the home, not just the term? (Canada)
In Canada a mortgage costs the interest over every term you hold it, any penalty if you sell mid-term, and property tax and insurance. How to add it up.
- What should I ask a mortgage broker besides the rate? (Ontario)
In Ontario, ask a mortgage broker about term, amortization, prepayment, portability, the penalty method, the charge type, and what the home is for.
What we do before we compare rates
Bring your plan, not just your letter. We start with how long you expect to keep the home and what you want the mortgage to do. Then we set out the term, amortization, prepayment and portability that fit. Only then do we compare prices with the banks, credit unions and monoline lenders (mortgage-only lenders) we work with, subject to lender approval.
If your bank's renewal already fits the plan, we say so. If the plan needs something no bank will do, an alternative lender comes next. A short private bridge from Stonefield Capital, our private-lending brand, with a written plan back to a bank, comes last.
Sources
- Financial Consumer Agency of Canada — Mortgage fees: Prepayment penalties, page dated 2025-10-15, checked 2026-10-26.
- Financial Consumer Agency of Canada — Paying off your mortgage faster, page dated 2025-10-15, checked 2026-10-26.
- Financial Consumer Agency of Canada — Code of Conduct, Mortgage Prepayment Information, page dated 2025-09-24, checked 2026-10-26.
- Department of Finance Canada — Mortgage reforms, September 2024, checked 2026-10-23.
- CMHC — CMHC Portability, checked 2026-10-26.
What to do next
Put your two scenarios into the total cost of holding tool. If you have a renewal letter or quote from your bank, start at can your bank do better?. To talk the structure through first, use the call-back form.
Common follow-up questions
Should my term match how long I plan to stay?
Often, where you can, because there is no prepayment penalty when a term ends. If you're unsure, compare each offer's penalty method and portability as closely as its rate.
Can I take my mortgage with me if I move?
Often, if the contract allows porting. How porting works depends on the lender, and there are generally time limits between the sale and the purchase. If the new home needs a bigger mortgage, the lender generally prices and approves the extra amount separately, subject to lender approval.
What would it cost to break my mortgage today?
Your lender can tell you in writing. Ask for a statement of the charge and how it is calculated; federally regulated lenders provide one on request. The penalty estimator gives a rough figure first.
This page is general information for Ontario readers, not financial, legal or tax advice. Public rules on this page were checked on 2026-10-26; your mortgage contract governs. Every mortgage is subject to lender approval.