Kambi Heywood - Mortgage Expert

GDS/TDS Ratios Explained

Kambi Heywood • November 9, 2023


One of the major qualifiers lenders look at when considering your application for mortgage financing is your debt service ratios.


Now, before we get started, if you prefer to have someone walk through these calculations with you, assess your financial situation, and let you know exactly where you stand, let’s connect. There is no use in dusting off the calculator and running the numbers yourself when we can do it for you!


However, if you’re someone who likes to know the nitty-gritty of how things work instead of simply accepting that's just the way it is, this article is for you. But be warned, there are a lot of mortgage words and some math ahead; with that out of the way, let’s get started!

 

“Debt servicing” is the measure of your ability to meet all of your financial obligations. There are two ratios that lenders examine to determine whether you can debt service a mortgage.


The first is called the “gross debt service” ratio, or GDS, which is the percentage of your monthly household income that covers your housing costs. The second is called the “total debt service” ratio, or TDS, which is the percentage of your monthly household income covering your housing costs and all your other debts.


GDS is your income compared to the cost of financing the mortgage, including your proposed mortgage payments (principal and interest), property taxes, and heat (PITH), plus a percentage of your condo fees (if applicable).


Here’s how to calculate your GDS.


Principal + Interest + Taxes + Heat / Gross Annual Income


Your TDS is your income compared to your GDS plus the payments made to service any existing debts. Debts include car loans, line of credit, credit card payments, support payments, student loans, and anywhere else you’re contractually obligated to make payments.


Here’s how to calculate your TDS.


Principal + Interest + Taxes + Heat + Other Debts / Gross Annual Income


With the calculations for those ratios in place, the next step is to understand that each lender has guidelines that outline a maximum GDS/TDS. Exceeding these guidelines will result in your mortgage application being declined, so the lower your GDS/TDS, the better.


If you don’t have any outstanding debts, your GDS and TDS will be the same number. This is a good thing!


The maximum ratios vary for conventional mortgage financing based on the lender and mortgage product being offered. However, if your mortgage is high ratio and mortgage default insurance through CMHC is required, the maximum GDS is 35% with a maximum TDS of 42%. Those ratios are stretched a little when default insurance is secured through Sagan (formerly Genworth) or Canada Guarantee to 39% GDS and 44% TDS.


So how does this play out in real life? Well, let’s say you’re currently looking to purchase a property with a payment of $1700/mth (PITH), and your total annual household income is $90,000 ($7500/mth). The calculations would be $1700 divided by $7500, which equals 0.227, giving you a gross debt service ratio of 22.7%.


A point of clarity here. When calculating the principal and interest portion of the payment, the Government of Canada has instituted a stress test. It requires you to qualify using the government's qualifying rate (which is higher), not the actual contract rate. This is true for both fixed and variable rate mortgages.


Now let’s continue with the scenario. Let’s say that in addition to the payments required to service the property, you have a car payment of $300/mth, child support payments of $500/mth, and between your credit cards and line of credit, you’re responsible for another $700/mth. In total, you pay $1500/mth. So when you add in the $1700/mth PITH, you arrive at a total of $3200/mth for all of your financial obligations. $3200 divided by $7500 equals 0.427, giving you a total debt service ratio of 42.7%.


Here’s where it gets interesting. Based on your GDS alone, you can easily afford the property. But when you factor in all your other expenses, the TDS exceeds the allowable limit of 42% (for an insured mortgage anyway). So why does this matter? Well, as it stands, you wouldn’t qualify for the mortgage, even though you are likely paying more than $1700/mth in rent.


So then, to qualify, it might be as simple as shuffling some of your debt to lower payments. Or maybe you have 10% of the purchase price saved for a downpayment, changing the mortgage structure to 5% down and using the additional 5% to pay out a portion of your debt might be the difference you need to bring it all together.


Here’s the thing, as your actual financial situation is most likely different than the one above, working with an independent mortgage professional is the best way to give yourself options. Don’t do this alone. Your best plan is to seek and rely on the advice provided by an experienced independent mortgage professional. While you might secure a handful of mortgages over your lifetime, we do this every day with people just like you.


It’s never too early to start the conversation about mortgage qualification. Going over your application and assessing your debt service ratios in detail beforehand gives you the time needed to make the financial moves necessary to put yourself in the best financial position.


So if you find yourself questioning what you can afford or if you want to discuss your GDS/TDS ratios to understand the mortgage process a little better, please get in touch. It would be a pleasure to work with you, we can get a preapproval started right away.


Kambi Heywood

Licensed Mortgage Broker

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Is It the Right Time to Refinance? 5 Signs You Should Consider It

By Kambi Heywood • February 28, 2025
Refinancing your mortgage can be a smart financial move, but how do you know if it’s the right time? Whether you’re looking to lower your monthly payments, access home equity, or consolidate debt, refinancing can offer valuable benefits. Here are five key signs that it might be the right time to refinance your mortgage in Canada. 1. Interest Rates Have Dropped One of the most common reasons Canadians refinance is to secure a lower interest rate. Even a small decrease in your mortgage rate can lead to significant savings over time. If rates have dropped since you took out your mortgage, refinancing could help you reduce your monthly payments and save thousands in interest. ✅ Tip: Check with your mortgage broker to compare your current rate with today’s market rates. 2. Your Financial Situation Has Improved If your credit score has increased or your income has stabilized since you first got your mortgage, you might qualify for better loan terms. Lenders offer lower rates and better conditions to borrowers with strong financial profiles. ✅ Tip: If you’ve paid off debts, improved your credit score, or increased your savings, refinancing could work in your favour. 3. You Want to Consolidate High-Interest Debt Carrying high-interest debt from credit cards, personal loans, or lines of credit? Refinancing can help consolidate those debts into your mortgage at a much lower interest rate. This can make monthly payments more manageable and reduce the overall cost of borrowing. ✅ Tip: Make sure the savings from refinancing outweigh any prepayment penalties or fees. 4. You Need to Free Up Cash for a Major Expense Many Canadians refinance to access their home’s equity for renovations, education costs, or major life expenses. With home values rising in many areas, a refinance could help you tap into that value while still keeping manageable payments. ✅ Tip: Consider a home equity line of credit (HELOC) if you need flexible access to funds. 5. Your Mortgage Term is Ending, and You Want Better Terms If your mortgage is up for renewal, it’s the perfect time to explore refinancing options. Instead of simply accepting your lender’s renewal offer, compare rates and terms to see if you can get a better deal elsewhere. ✅ Tip: A mortgage broker can help you shop around and negotiate better terms on your behalf. Is Refinancing Right for You? Refinancing isn’t always the best move—there can be penalties for breaking your current mortgage, and not all savings are worth the switch. However, if you relate to any of the five signs above, it’s worth discussing your options with a mortgage professional. Thinking about refinancing? Let’s chat and find the best option for you!

Getting a Mortgage After Bankruptcy

By Kambi Heywood • February 27, 2025
 Sometimes life throws you a financial curveball. Bankruptcy and consumer proposals happen. It doesn’t mean your life is over, and it doesn’t mean you won’t ever qualify for a mortgage again. The key to financial success here is getting things under control as quickly as possible. You must demonstrate to the potential lenders that what happened in the past won’t happen again in the future. So if you’re thinking about getting a mortgage post-bankruptcy, lenders will want answers to the following questions: How long have you been discharged? Securing a mortgage will be dependent on how long it has been since you were discharged from your bankruptcy or consumer proposal. Most lenders consider the discharge date on both to be your new ground zero. And while there is no legally defined waiting period for when you can apply for a new mortgage post-bankruptcy, what lenders will assess is how you’re managing your finances after your financial troubles. Have you established new credit? You can show lenders that they can trust you after bankruptcy by establishing new credit and managing that credit flawlessly. So as soon as you’ve been discharged, it’s a good idea to get a secured credit card and start rebuilding your credit score. To be considered completely established, you’ll want to have two years of credit history on two trade lines with a credit limit of $2500 on each trade line. You’ll also want to make sure that you have no late or missed payments. How much do you have available for a downpayment? The more money you have to put towards purchasing a property, or the more equity you have in your property in the case of a refinance, the better your chances of getting a mortgage. The more money you bring to the table, the more comfortable a lender will feel about the risk they take of losing their investment should you run into future financial difficulty. What is your total debt service ratio? Another consideration lenders will look at is how much money you make compared to the cost of making your mortgage payments. So it probably goes without saying that the more money you make compared to the amount you want to borrow, the better. Conventional or insured financing. If you’re looking to get the best mortgage products available, here are some of the things a lender will want to see: You’ve been discharged for at least two years plus a day. You’ve established your credit (as listed above). You have at least 5% down for the first $500k of the purchase and 10% down for anything over $500k. If you don’t have a 20% downpayment, you will be required to secure mortgage insurance through CMHC, Sagen (formerly Genworth), or Canada Guaranty. The cost to service the property and all your debts don’t exceed 44% of your gross income. Alternative lending As independent mortgage professionals, our job is to provide solutions and strategies for our clients. As such, in addition to dealing with many traditional lending institutions, we also have access to lenders who specialize in working with clients whose financial situation isn't all that straightforward. These private lenders offer alternative lending solutions that consider the overall strength of your mortgage application. While you won’t qualify for the best rates and terms on the market by going with an alternative lender, if you’re looking for options, you might find that alternative lending is a very reasonable solution for you. Alternative lending isn’t for everyone, but it’s an excellent solution for some, especially if you’ve gone through a bankruptcy or consumer proposal and need a mortgage before fully establishing your credit. Get in touch anytime. So whether you’re looking for a plan to help you qualify for a mortgage with the most favourable terms or if you need something more immediate. Please connect anytime. It would be a pleasure to outline your options and work on a plan to get you a mortgage.
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