How Do You Port a Mortgage?

Tim Lyon • October 3, 2024

Porting your mortgage is when you transfer the remainder of your current mortgage term, outstanding principal balance, and interest rate to a new property if you’re selling your existing home and buying a new one.


Now, despite what some big banks would lead you to believe, porting your mortgage is not an easy process. It’s not a magic process that guarantees you will qualify to purchase a new property using the mortgage you had on a previous property.


In addition to re-qualifying for the mortgage you already have, the lender will also assess the property you’re looking to purchase. Many moving parts come into play. You’re more likely to have significant setbacks throughout the process than you are to execute a flawless port. Here are some of the reasons:


You may not qualify for the mortgage


Let’s say you’re moving to a new city to take a new job. If you’re relying on porting your mortgage to buy a new property, you’ll have to substantiate your new income. If you’re on probation or changed professions, there’s a chance the lender will decline your application. Porting a mortgage is a lot like qualifying for a new mortgage, just with more conditions.


The property you are buying has to be approved


So let’s say that your income isn’t an issue and that you qualify for the mortgage. The subject property you want to purchase has to be approved as well. Just because the lender accepted your last property as collateral for the mortgage doesn’t mean the lender will accept the new property. The lender will require an appraisal and scrutinize the condition of the property you’re looking to buy.


Property values are rarely the same


Chances are, if you’re selling a property and buying a new one, there’ll be some price difference. When looking to port a mortgage, if the new property’s value is higher than your previous property, requiring a higher mortgage amount, you’ll most likely have to take a blended rate on the new money, which could increase your payment. If the property value is considerably less, you might incur a penalty to reduce the total mortgage amount.


You still need a downpayment


Porting a mortgage isn’t just a simple case of swapping one property for another while keeping the same mortgage. You’re still required to come up with a downpayment on the new property.


You’ll most likely have to pay a penalty


Most lenders will charge the total discharge penalty when you sell your property and take it from the sale proceeds. The penalty is then refunded when you execute the port and purchase the new property. So if you are relying on the proceeds of sale to come up with your downpayment, you might have to make other arrangements.


Timelines rarely work out


When assessing the housing market, It’s usually a buyer’s market or a seller’s market, not both at the same time. So although you may be able to sell your property overnight, you might not be able to find a suitable property to buy. Alternatively, you may be able to find many suitable properties to purchase while your house sits on the market with no showings.


And, chances are, when you end up selling your property and find a new property to buy, the closing dates rarely match up perfectly.


Different lenders have different port periods


Understanding that different lenders have different port periods is where the fine print in the mortgage documents comes into play. Did you know that depending on the lender, the time you have to port your mortgage can range from one day to six months? So if it’s one day, your lawyer will have to close both the sale of your property and the purchase of your new property on the same day, or the port won’t work.


Or, with a more extended port period, you run the risk of selling your house with the intention of porting the mortgage, only to not be able to find a suitable property to buy.


So while the idea of porting your mortgage can seem like a good idea, and it might even make sense if you have a low rate that you want to carry over to a property of similar value, it’s always a good idea to get professional mortgage advice and look at all your options.


While porting your mortgage is a nice feature to have because it provides you with options, please understand that it is not a guarantee that you’ll be able to swap out properties and keep making the same payments. There’s a lot to know.


If you’re looking to sell your existing property and buy a new one, please connect anytime. It would be a pleasure to walk you through the process and help you consider all your options, including a port if that makes the most sense!


Tim Lyon

Mortgage Consultant

How Rental Income Impacts Your Mortgage Approval (And Why Lender Choice Matters)

By Tim Lyon • January 20, 2026
If you are buying a home with a suite, keeping your current home as a rental, or already own a rental property, mortgage qualification can get confusing fast. The frustrating part is that you can do everything “right” and still get very different answers depending on which lender you talk to. Here’s a simple breakdown so you understand it and don’t miss out. What are Debt Service Ratios? In Canada, lenders qualify you using two main ratios: Gross Debt Service (GDS) This looks at housing costs only , typically: Mortgage payment Property taxes Heating 50% of strata fees (if applicable) GDS typically needs to be 39% or less of your gross income. Total Debt Service (TDS) This includes everything in GDS , plus other debts like: Car loans Credit cards Lines of credit Student loans TDS typically needs to be 44% or less of your gross income. These ratios are the foundation. If they do not work, the lender will not approve the mortgage, even with strong credit and a solid down payment. How Lenders Treat Rental Income Most people assume lenders look at rental properties based on simple cash flow (rent minus mortgage payment). In reality, most lenders use one of two methods: 1) Addback A percentage of the rental income is added to your gross income for qualification purposes. 2)Offset A percentage of the rental income is subtracted from the mortgage payment tied to the rental property. Different lenders use different percentages and different worksheets. That is why the same borrower can qualify with one lender and fail with another. Benefits of Understanding Lender Methods When you understand how rental income is calculated, you can: Avoid being under-qualified by a lender with conservative rules Get a more accurate picture of your real purchasing power Choose a lender that fits your situation (instead of forcing your situation to fit the lender) Important Considerations A few key points to keep in mind: Rental income is rarely counted at 100% , but some lenders are more generous than others. The method matters just as much as the percentage (addback vs offset). If you own multiple properties, lender worksheets can change the result dramatically. Your lender choice is a strategy decision , not just a rate decision. Real-World Example: Same Clients, Two Very Different Outcomes Here’s an example comparing lenders Scotiabank and Strive, using a fictitious couple: Scenario Household income: $160,000 Existing townhome: $800,000 value with a $525,000 mortgage ( $2,500/month payment) Market rent for the townhome: $3,400/month New purchase: property with a rental suite generating $1,800/month Down payment: 10% Other debts: student loan $165/month , car loan $500/month How Scotiabank viewed it For the townhome rental, they counted half the rent and subtracted the mortgage payment, leaving an $800/month shortfall that gets added into the debt ratios. For the new purchase, 50% of the suite income gets added to income. Max mortgage : $650,700 Max purchase price : $723,000 How Strive viewed it For the townhome rental, Strive used a rental worksheet and calculated $5.20/month of income that can be added to the application. For the new purchase, 100% of the suite income gets added to income, and they did not need to include taxes or heat. Max mortgage : $878,400 Max purchase price : $976,000 The result That’s a $253,000 difference in purchasing power , with the same clients, same income, same debts, and same properties. The difference was lender policy. Quick Summary GDS and TDS ratios are the backbone of mortgage qualification. Rental income is usually counted using Addback or Offset , and each lender handles this differently. Two lenders can produce wildly different results, even with the exact same file. In the example above, lender choice created a $253,000 swing in purchasing power. Next Steps If you are planning to: Buy a home with a suite Keep your current home and convert it to a rental Use rental income to qualify Reach out and I will run the numbers across multiple lenders so you see what you actually qualify for, not just what one lender will allow. Need help with your mortgage? Book a consultation or call 778-988-8409 . Glossary Addback : A method where a lender adds a percentage of rental income to your gross income for qualification. Gross Debt Service (GDS) : The ratio that measures housing costs as a percentage of gross income. Offset : A method where a lender subtracts a percentage of rental income from the rental property’s mortgage payment for qualification. Total Debt Service (TDS) : The ratio that measures housing costs plus other debts as a percentage of gross income.

Mortgage Renewal vs. Refinance: Understanding the Key Differences

By Tim Lyon • November 25, 2025
If you own a property with a mortgage, you've probably heard the terms "renewal" and "refinance" thrown around. While both involve obtaining a new term for your mortgage, there are some important differences to understand. Let's break down what each one means and when you might use them. Understanding Mortgage Basics In Canada, when you take out a mortgage, the payments are typically spread over 25 to 30 years. This period is known as the amortization. However, unlike in the U.S., Canadians do not keep the same interest rate and payment terms for the entire amortization period. Instead, you have an initial term, usually 3 to 5 years, after which you need to renew into a new term. For example, if you have a 25-year mortgage with 5-year terms, you will need to renew your mortgage four times throughout its lifespan. It's also common to have a mix of different term lengths over the course of your mortgage. What is a Mortgage Renewal? A mortgage renewal occurs at the end of your mortgage term. When you renew, you start a new term with a new interest rate while keeping the remaining details of your mortgage the same. The key element here is that the mortgage charge registered on your property's title remains unchanged. A renewal is straightforward and typically does not involve any significant changes to your mortgage agreement other than a new interest rate. Think of it as hitting the "continue" button on your mortgage, but at new rates. What is a Mortgage Refinance? A mortgage refinance is different. When you refinance, you are making changes to your original mortgage agreement. This means paying off your existing mortgage and registering a new one on your property's title. Essentially, you are taking out a completely new mortgage for the same property. People commonly refinance to: Access the equity in their home for investments or major purchases Consolidate high-interest debt into their lower-rate mortgage Extend the amortization period to reduce monthly payments and improve cash flow Make significant changes to their mortgage structure It's important to note that refinancing is not allowed for insured properties (those with less than a 20% down payment at purchase). This means the maximum loan amount in a refinance is 80% of your property value. What About Switching Lenders? If you want to keep everything the same but switch lenders for a better rate, this is known as a transfer. A transfer is a type of renewal where the original mortgage charge is transferred from one lender to another. Depending on the lenders involved, you might be able to make minor changes (like extending the amortization or changing borrowers) without needing a full refinance. Why Timing Matters Your mortgage maturity date is when your current term ends. This is the ideal time to either renew or refinance. If you refinance or switch lenders before the maturity date, you will face a prepayment penalty. If you refinance, renew or transfer at maturity, there is no penalty. Real-World Example A homeowner with a $450,000 mortgage is reaching the end of their 5-year term. Their lender offers a renewal rate, but they also have $40,000 in high-interest credit card debt. Option 1: Renewal They accept the new term. Their mortgage stays the same. Their debt remains separate at high interest rates. Option 2: Refinance at Maturity They consolidate the credit card debt into the new mortgage. Their total monthly payments drop significantly, even after accounting for the new mortgage balance. In this situation, refinancing provides better cash flow and a simpler payment structure. Quick Summary Mortgage Renewal: Starts a new term for your existing mortgage Mortgage charge on your title stays the same Keeps all other terms the same aside from interest rate Can switch lenders at renewal through a transfer No penalty when done at maturity Mortgage Refinance: Pays off current mortgage and creates a new one New mortgage charge registered on your title Often resets the amortization period Can access equity or make structural changes Maximum 80% of property value for uninsured mortgages Incurs penalty if done before maturity Next Steps Understanding the difference between renewal and refinance helps you make informed decisions about managing your mortgage. If you have a renewal coming up or are considering accessing your home equity, now is a good time to explore your options. Whether you're looking to renew, refinance, or switch lenders, I'm here to help you navigate the process and find the best solution for your situation. Need help with your mortgage? Book a consultation or call 778-988-8409 . Glossary Amortization: The total time period over which you'll pay off your mortgage, typically 25-30 years in Canada. Insured Mortgage: A mortgage where the down payment was less than 20%, requiring mortgage default insurance to be added. Maturity Date: The end date of your current mortgage term, when you need to renew or refinance. Mortgage Charge: The legal registration of your mortgage on your property's title. Pre-payment Penalty: A fee charged by your lender if you pay off your mortgage before the end of your term. Refinance: Replacing your existing mortgage with a new mortgage, often with different terms or to access equity. Renewal: Starting a new term for your existing mortgage, typically just updating the interest rate. Term: The length of time your current mortgage contract is in effect, typically 3-5 years in Canada. Transfer: Moving your mortgage from one lender to another at renewal without changing other terms.