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What Should You Not Do When Mortgage Refinancing?

Post By Qayyum Rajan, CFA
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Refinancing your mortgage can help you save money or access home equity, but it’s easy to make costly mistakes. Here are the key pitfalls to avoid:

  • Skipping Rate Comparisons: Don’t stick with your current lender without shopping around. Even a small rate difference can save you thousands over time.
  • Ignoring Hidden Fees: Prepayment penalties, legal fees, and appraisal costs can eat into your savings. Factor these into your calculations.
  • Extending Your Loan Term Too Much: Lower monthly payments might seem appealing, but they lead to paying more interest in the long run.
  • Not Checking Your Credit and Home Equity: A poor credit score or low home equity can result in higher rates or loan rejection.
  • Overlooking Contract Details: Read the fine print to understand prepayment options, penalties, and other terms. Seek professional advice if needed.
  • Delaying Rate Locking: Waiting too long to secure a rate can leave you vulnerable to sudden increases.

Why Refinancing Your Mortgage Right Now Is a Huge Mistake

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Mistake 1: Skipping Rate Comparisons Between Lenders

One of the costliest errors Canadian homeowners make when refinancing is sticking with their current lender without exploring other options. Many assume their bank will reward their loyalty with the best deal, or they simply want to avoid the effort of comparing rates. Unfortunately, this assumption can lead to unnecessarily high costs.

Lenders in Canada, including the Big Six banks, credit unions, and online mortgage providers, offer varying rates and terms. Your current lender isn’t obligated to match better offers elsewhere and may rely on your reluctance to shop around, keeping you locked into higher interest payments.

Why Rate Differences Make a Big Impact

Even a small difference in mortgage rates can have a massive financial impact over time. Let’s consider a $700,000 mortgage in Toronto with a five-year fixed term and a 20-year amortization. If a borrower accepts an offer from "Bank #1" at 7.29%, they’d pay $5,503.70 per month and rack up $235,677.75 in interest over five years. However, if they shop around and secure a rate from "Bank #3" at 5.07%, their monthly payment drops to $4,626.37, and the total interest over five years falls to $161,945.89. That’s a monthly savings of $877.33 - or $73,731.86 over five years [1].

Industry experts emphasize the savings potential of rate shopping. According to EveryRate.ca, "A few hours of work could save you the equivalent of a year's worth of salary; it's that significant" [1].

How to Effectively Compare Rates

Getting the best deal requires more than just glancing at interest rates. Here’s how to approach rate shopping with a strategy:

  • Use Online Tools: Platforms like Ratehub.ca, WOWA.ca, and nesto.ca allow you to compare rates from multiple lenders. These sites generate personalized quotes based on details like your down payment, home price, and location.
  • Look Beyond Interest Rates: While rates are important, the Annual Percentage Rate (APR) provides a clearer picture of your total borrowing costs by factoring in fees. Also, consider features like prepayment privileges, portability, and penalty structures.
  • Run the Numbers: Take advantage of calculators - such as mortgage payment, refinance, and penalty calculators - to model different scenarios. This helps you understand the overall financial impact, including any costs tied to breaking your current mortgage.
  • Work with a Mortgage Broker: Brokers have access to a broader network of lenders and can negotiate on your behalf. They may even secure volume discounts or other perks, presenting you with multiple pre-approved options to choose from.
  • Get Pre-Approvals and Rate Holds: Request pre-approvals from your top lenders. Many can lock in rates for 120 to 150 days, protecting you from potential rate hikes while you finalize your refinancing.
  • Leverage Competing Offers: Once you have solid quotes from other lenders, bring them to your current bank. Banks often have flexibility with their posted rates, especially for clients with strong credit histories, and may match or beat competing offers.

Taking these steps ensures you’re not leaving money on the table. Next, be sure to examine fee structures closely to avoid unexpected costs.

Mistake 2: Missing Hidden Fees and Penalty Costs

Securing a lower interest rate is a priority for many Canadian homeowners, but it’s easy to overlook the hidden costs tied to breaking your current mortgage. One of the biggest expenses you could encounter is the prepayment penalty, which depends on your lender and the type of mortgage you have. On top of that, there may be other fees that could eat into your potential savings.

Here’s how to avoid falling into this trap:

  • Ask for clarity on prepayment penalties: Get a detailed breakdown from your current lender.
  • Identify all additional costs: Factor these into your calculations to see if refinancing is truly worth it.
  • Leverage online refinancing calculators: These tools can help you model different scenarios and understand the overall financial impact.

Being aware of these fees is just as important as comparing interest rates. Fortunately, there are ways to reduce these expenses. For example, using prepayment privileges - like making larger or more frequent payments - can lower your mortgage balance and, in turn, reduce future prepayment penalties [2][3][4]. Some lenders even offer a blended rate or waive penalties entirely when you switch [4].

If you’re moving to a new lender, they might sweeten the deal by rolling up to $3,000 into your new mortgage to offset the prepayment penalty. This spreads the cost over the life of your loan [4]. Additionally, certain lenders provide cashback rewards or bonuses for switching, which can further ease the financial burden [4].

Paying attention to these hidden fees and finding ways to minimize them can make refinancing a much smarter financial decision.

Mistake 3: Making Your Loan Term Too Long

When refinancing your mortgage, it might be tempting to choose a longer term because it lowers your monthly payments. But here's the catch: while your payments shrink in the short term, the total interest you’ll pay over time can skyrocket. This trade-off - smaller monthly payments versus significantly higher long-term costs - is something you need to carefully consider.

In certain situations, extending your mortgage term might make sense. For example, if you're navigating financial difficulties, facing job uncertainty, or dealing with major life changes, reducing your monthly payments can provide some much-needed breathing room. It’s a way to ease cash flow pressures during tough times.

That said, you don’t have to let a longer term completely dictate your costs. Many Canadian lenders offer prepayment options, allowing you to pay down a portion of your mortgage principal without penalties. By making regular extra payments, you can chip away at the principal and reduce the overall interest you’d otherwise accumulate.

Another angle to consider is whether you could invest the savings from lower monthly payments. If you’re confident that your investments will yield returns higher than your mortgage interest rate, this approach might work for you. However, it comes with risks, so weigh your options carefully.

Before committing to a longer term, take a close look at the numbers. Use online mortgage calculators - tools widely available through Canadian banks and credit unions - to compare the total interest costs of a longer term against the short-term savings. While the idea of lower payments might seem appealing, the long-term interest expense could be far greater than you anticipate.

Finally, take stock of your credit score and home equity before moving forward. These factors will play a big role in determining your refinancing options.

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Mistake 4: Not Checking Your Credit Score and Home Equity First

Before diving into refinancing, it’s crucial to review your credit score and home equity. Skipping this step can leave you vulnerable to higher interest rates, stricter loan conditions, or even outright rejection. Overlooking these factors could significantly increase your mortgage costs over time.

While shopping around for the best refinancing deal is essential, it’s equally important to assess your personal financial situation first. Your credit score could have dropped due to missed payments, high credit usage, or errors on your report. Similarly, your home’s market value might not have appreciated as much as you’d hoped, especially in areas where real estate prices have levelled off.

How Credit Scores Impact Refinancing

Lenders in Canada rely heavily on your credit score to gauge risk and set your mortgage rates. Even a small dip in your score can lead to noticeably higher interest payments over the life of your loan. Most major lenders have minimum credit score requirements for refinancing, and while alternative lenders may offer more flexibility, borrowers with higher scores typically secure better rates and terms.

It’s a good idea to check your credit score early in the process. In Canada, you can access free credit reports from major credit bureaus, and many banks provide complimentary credit score monitoring. If your score needs work, focus on reducing outstanding balances, making on-time payments, and avoiding new credit applications. Keep in mind that improving your credit score takes time - reducing high credit usage might show results in a few months, but repairing negative marks can take longer.

Understanding Your Home Equity

Your home equity is just as important as your credit score when it comes to refinancing. Home equity is the difference between your property’s current market value and the remaining balance on your mortgage. This figure plays a major role in determining your refinancing options. Lenders typically require a certain level of equity, though the exact amount varies by program. Some refinancing options allow for lower equity if mortgage default insurance is in place, but this often comes with higher costs.

To get an accurate picture of your home’s value, you can start with online valuation tools for a general estimate, but a professional appraisal will provide a more precise figure.

A lower loan-to-value (LTV) ratio gives you access to better refinancing options and more competitive terms, whereas a higher LTV could limit your choices and increase your costs. In Canada’s major real estate markets, where property values can fluctuate significantly, keeping an eye on market trends is especially important.

If your equity is less than expected, it may be wise to hold off on refinancing until you’ve paid down more of your mortgage or until market conditions improve. Having a clear understanding of your home equity and credit score not only strengthens your negotiating position but also helps you avoid costly refinancing mistakes.

Mistake 5: Not Reading Your Contract or Getting Expert Help

Mortgage contracts can be overwhelming, but skipping over the details or relying solely on verbal assurances from lenders can lead to unpleasant surprises later. For many Canadian homeowners, taking the time to thoroughly review the fine print - and seeking professional advice - can prevent costly misunderstandings and ensure you’re fully aware of what you’re signing.

Even seemingly straightforward agreements can include restrictive terms that might limit your options or increase your expenses in the long run.

Key Contract Terms to Pay Attention To

Certain clauses in your mortgage contract could have a big impact on your financial flexibility. Here are some important areas to focus on:

  • Prepayment Options: These clauses specify how much extra you can pay toward your mortgage principal annually without incurring penalties. Some lenders allow generous prepayment amounts, while others impose stricter limits. Understanding these terms can make a significant difference in how quickly you can pay down your mortgage.
  • Variable Rate Conditions: If you’re considering a variable rate mortgage, pay close attention to how rate changes are handled. For example, some lenders use the Bank of Canada's overnight rate as a benchmark, while others tie their rates to their own prime rate, which may fluctuate differently. Knowing how often rates can change and the caps on increases is crucial.
  • Penalty Calculations: Breaking your mortgage early can be expensive, but the cost varies widely depending on the lender. Some use a simple interest penalty for a short period, while others calculate penalties using the Interest Rate Differential (IRD) method, which can be much higher. Make sure the method and any discount rates are clearly outlined in your contract.
  • Portability and Assumability: These clauses often go unnoticed but can provide valuable flexibility. Portability allows you to transfer your mortgage to a new property, while assumability lets a buyer take over your mortgage terms. Both features can be especially useful if interest rates rise.
  • Insurance Requirements: Lenders may require you to maintain specific types of insurance, such as home insurance or mortgage life insurance. Your contract should clearly state the required coverage and who can provide these services, as well as any associated costs.

Understanding these terms is only the first step. Professional guidance can help you navigate the complexities and make informed decisions.

The Value of Expert Advice

When it comes to deciphering complex mortgage contracts, expert advice can be a game-changer. Here’s how different professionals can help:

  • Mortgage Brokers: These professionals bring extensive market knowledge and can explain subtle differences between contracts. They often negotiate better terms on your behalf and typically provide their services at little to no cost, as they are usually compensated by lenders.
  • Real Estate Lawyers: A lawyer ensures your interests are protected throughout the refinancing process. They review contracts for potential red flags, ensure all documents are properly executed, and highlight clauses that could disadvantage you.
  • Financial Advisors: These experts help you see the bigger picture. They can show how your mortgage decisions fit into your overall financial goals, such as building long-term wealth or planning for retirement. For example, they can help you weigh the pros and cons of fixed versus variable rates or shorter versus longer amortization periods.

While professional advice may come with an upfront cost, it’s often a small price to pay compared to the potential financial impact of agreeing to unfavourable terms. This is especially true when dealing with alternative lenders or navigating complicated financial situations. Independent experts can help you assess your options carefully and avoid pitfalls that could lead to difficulties later.

Taking the time to fully understand your mortgage contract and consulting professionals is a smart move that can save you money and stress in the long term.

Mistake 6: Waiting Too Long to Lock Your Interest Rate

Delaying a decision on locking in your interest rate can be costly. Waiting for rates to drop might seem tempting, but it also leaves you vulnerable to sudden increases. Securing your rate quickly can shield you from these unexpected hikes and help safeguard your long-term savings.

Timing matters, especially during periods of economic uncertainty or potential policy changes. Even a small rise in interest rates can lead to higher monthly payments and increased overall costs over the life of your loan.

How Rate Lock Periods Work

A rate lock is your lender's promise to hold a specific interest rate for a set period, giving you time to complete the refinancing process. In Canada, these lock periods typically range from a few weeks to a few months, but the exact duration depends on your lender. During this period, your rate won't change unless your lender offers a "float-down" option, which allows you to benefit from lower rates if they drop during the lock period. Not all lenders provide this feature, so it’s worth asking about.

The terms of rate locks can vary depending on the institution. Major banks often offer standard lock periods with limited flexibility, while credit unions and smaller lenders may offer more tailored options. Some lenders may charge a fee if you need to extend your rate lock, so it’s essential to plan accordingly. Beyond just securing your interest rate, a rate lock can also protect other loan terms, such as loan-to-value ratios and associated fees. This means that even if lending standards shift during your application process, you’ll still benefit from the terms agreed upon at the time of the lock.

Understanding how rate locks function is crucial for appreciating the financial stability they can provide during a refinancing process.

What Delayed Rate Locks Can Cost You

Procrastination on locking in your rate can lead to higher costs. Even a slight increase in your interest rate - just a fraction of a percentage point - can bump up your monthly payment and significantly inflate the total cost of your loan over time. This impact is even more pronounced for larger mortgages or loans with longer terms.

By hesitating, you risk facing higher rates, which may require putting down extra funds or even rethinking your refinancing plans altogether. This can be especially problematic if you were relying on accessing home equity for renovations or other major expenses.

The key is to strike a balance between shopping for competitive rates and acting decisively. Most mortgage professionals recommend locking in your rate as soon as you’re confident you’ve found a good offer, rather than gambling on market fluctuations. In an unpredictable rate environment, quick action can save you from unnecessary financial stress.

Conclusion: Main Points for Smart Mortgage Refinancing

To make the most of refinancing your mortgage in Canada, it's important to avoid common pitfalls. Let’s recap the key takeaways for a smarter approach.

Start by comparing lender rates. Even a slight difference in interest rates can add up to tens of thousands of dollars in savings over the life of your mortgage. It’s worth the time to shop around.

Be aware of all refinancing fees, including legal costs and penalty charges. These expenses can eat into your expected savings if you don’t account for them upfront. Always include these in your calculations before moving forward.

Your choice of loan term has long-term implications. While a longer term might seem easier on your monthly budget, the additional interest can outweigh the short-term relief. Weigh your options carefully and think beyond just the immediate costs.

Ensure your credit score and home equity are in good shape before you start negotiating. These factors play a big role in securing favourable terms. Also, take the time to review contracts thoroughly and consult experts to avoid costly mistakes. Locking in your rate quickly can shield you from sudden market changes.

Refinancing isn’t something to rush into. With careful planning and attention to detail, you can save money and reduce financial stress. Treat it as a strategic financial decision, not a quick fix for current challenges.

FAQs

What costs should I consider when refinancing my mortgage in Canada?

Refinancing your mortgage in Canada comes with a mix of upfront and less obvious costs that you’ll need to consider to avoid any unpleasant surprises. Some of the main expenses include legal fees, which usually range between $900 and $2,000, and appraisal fees, which can cost anywhere from $600 to $2,000. You’ll also encounter title search or insurance fees, typically around 0.5% to 1% of your property’s value.

Another major cost to watch out for is the mortgage discharge or prepayment penalty, which can be hefty. This is often up to 3% of the loan amount or calculated using the interest rate differential (IRD) - a formula that compares your current rate to the lender's posted rate for the remaining term.

To avoid surprises, ask your lender for a detailed breakdown of all fees involved. Using online mortgage calculators from reputable Canadian banks can also help you estimate costs more accurately. Don’t forget to shop around and compare offers from different lenders to find the best deal and minimize unnecessary expenses.

How can I improve my credit score and build home equity before refinancing my mortgage?

To improve your credit score in Canada before refinancing, prioritize paying all your bills on time, aim to keep your credit card balances under 30% of their limits, and steer clear of applying for unnecessary credit. These actions show lenders that you manage your finances responsibly.

If you're looking to build home equity, consider making extra payments directly toward your mortgage principal whenever you can. Avoid extending your loan term unless absolutely necessary, and think about making home improvements that could boost your property’s value. By improving both your credit score and home equity, you can position yourself for better refinancing terms and potentially save money over time.

When should you lock in your interest rate to avoid potential increases during mortgage refinancing?

The ideal moment to lock in an interest rate during refinancing is when rates are low or there’s a strong likelihood they’ll rise soon. Timing plays a crucial role here, so keep an eye on economic factors like inflation trends or updates from the Bank of Canada that might signal an increase in rates.

Another smart move is to lock in your rate closer to the end of your current mortgage term. This can help you sidestep unnecessary penalties. Since rates can change daily, acting quickly when conditions are favourable could help you secure a better deal and save money over time.

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Qayyum Rajan, CFA
Written by

Qayyum Rajan, CFA

Qayyum is the CEO of Wealth Awesome, a leading Canadian personal finance publication. As a CFA charterholder with extensive experience in fintech, data science, and quantitative finance, he brings a unique analytical perspective to investing and wealth management.

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This content has been reviewed by CFA® charterholders and Certified Financial Planners (CFP®) with over a decade of experience in Canadian financial markets. All information is fact-checked against official Canadian sources and regulations.

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This content is for educational purposes only and should not be considered personalized financial advice. While our team brings professional expertise, individual circumstances vary. For personalized guidance, consult with a qualified financial advisor, tax professional, or mortgage specialist.

Published: September 23, 2025
Last Updated: January 8, 2026