GDS/TDS Ratios Explained

Marci Deane • April 17, 2024

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 is required, the maximum GDS is 39% with a maximum TDS of 44%.


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.


Share

By Marci Deane June 11, 2025
Divorces are challenging as there’s a lot to think about in a short amount of time, usually under pressure. And while handling finances is often at the forefront of the discussions related to the separation of assets, unfortunately, managing and maintaining personal credit can be swept aside to deal with later. So, if you happen to be going through or preparing for a divorce or separation, here are a few considerations that will help keep your credit and finances on track. The goal is to avoid significant setbacks as you look to rebuild your life. Manage Your Joint Debt If you have joint debt, you are both 100% responsible for that debt, which means that even if your ex-spouse has the legal responsibility to pay the debt, if your name is on the debt, you can be held responsible for the payments. Any financial obligation with your name on the account that falls into arrears will negatively impact your credit score, regardless of who is legally responsible for making the payments. A divorce settlement doesn’t mean anything to the lender. The last thing you want is for your ex-spouse’s poor financial management to negatively impact your credit score for the next six to seven years. Go through all your joint credit accounts, and if possible, cancel them and have the remaining balance transferred into a loan or credit card in the name of whoever will be responsible for the remaining debt. If possible, you should eliminate all joint debts. Now, it’s a good idea to check your credit report about three to six months after making the changes to ensure everything all joint debts have been closed and everything is reporting as it should be. It’s not uncommon for there to be errors on credit reports. Manage Your Bank Accounts Just as you should separate all your joint credit accounts, it’s a good idea to open a checking account in your name and start making all deposits there as soon as possible. You’ll want to set up the automatic withdrawals for the expenses and utilities you’ll be responsible for going forward in your own account. At the same time, you’ll want to close any joint bank accounts you have with your ex-spouse and gain exclusive access to any assets you have. It’s unfortunate, but even in the most amicable situations, money (or lack thereof) can cause people to make bad decisions; you want to protect yourself by protecting your assets. While opening new accounts, chances are your ex-spouse knows your passwords to online banking and might even know the pin to your bank card. Take this time to change all your passwords to something completely new, don’t just default to what you’ve used in the past. Better safe than sorry. Setup New Credit in Your Name There might be a chance that you’ve never had credit in your name alone or that you were a secondary signer on your ex-spouse’s credit card. If this is the case, it would be prudent to set up a small credit card in your name. Don’t worry about the limit; the goal is to get something in your name alone. Down the road, you can change things and work towards establishing a solid credit profile. If you have any questions about managing your credit through a divorce, please don’t hesitate to connect anytime. It would be a pleasure to work with you.
By Marci Deane June 4, 2025
Bank of Canada holds policy rate at 2¾%. FOR IMMEDIATE RELEASE Media Relations Ottawa, Ontario June 4, 2025 The Bank of Canada today maintained its target for the overnight rate at 2.75%, with the Bank Rate at 3% and the deposit rate at 2.70%. Since the April Monetary Policy Report, the US administration has continued to increase and decrease various tariffs. China and the United States have stepped back from extremely high tariffs and bilateral trade negotiations have begun with a number of countries. However, the outcomes of these negotiations are highly uncertain, tariff rates are well above their levels at the beginning of 2025, and new trade actions are still being threatened. Uncertainty remains high. While the global economy has shown resilience in recent months, this partly reflects a temporary surge in activity to get ahead of tariffs. In the United States, domestic demand remained relatively strong but higher imports pulled down first-quarter GDP. US inflation has ticked down but remains above 2%, with the price effects of tariffs still to come. In Europe, economic growth has been supported by exports, while defence spending is set to increase. China’s economy has slowed as the effects of past fiscal support fade. More recently, high tariffs have begun to curtail Chinese exports to the US. Since the financial market turmoil in April, risk assets have largely recovered and volatility has diminished, although markets remain sensitive to US policy announcements. Oil prices have fluctuated but remain close to their levels at the time of the April MPR. In Canada, economic growth in the first quarter came in at 2.2%, slightly stronger than the Bank had forecast, while the composition of GDP growth was largely as expected. The pull-forward of exports to the United States and inventory accumulation boosted activity, with final domestic demand roughly flat. Strong spending on machinery and equipment held up growth in business investment by more than expected. Consumption slowed from its very strong fourth-quarter pace, but continued to grow despite a large drop in consumer confidence. Housing activity was down, driven by a sharp contraction in resales. Government spending also declined. The labour market has weakened, particularly in trade-intensive sectors, and unemployment has risen to 6.9%. The economy is expected to be considerably weaker in the second quarter, with the strength in exports and inventories reversing and final domestic demand remaining subdued. CPI inflation eased to 1.7% in April, as the elimination of the federal consumer carbon tax reduced inflation by 0.6 percentage points. Excluding taxes, inflation rose 2.3% in April, slightly stronger than the Bank had expected. The Bank’s preferred measures of core inflation, as well as other measures of underlying inflation, moved up. Recent surveys indicate that households continue to expect that tariffs will raise prices and many businesses say they intend to pass on the costs of higher tariffs. The Bank will be watching all these indicators closely to gauge how inflationary pressures are evolving. With uncertainty about US tariffs still high, the Canadian economy softer but not sharply weaker, and some unexpected firmness in recent inflation data, Governing Council decided to hold the policy rate as we gain more information on US trade policy and its impacts. We will continue to assess the timing and strength of both the downward pressures on inflation from a weaker economy and the upward pressures on inflation from higher costs. Governing Council is proceeding carefully, with particular attention to the risks and uncertainties facing the Canadian economy. These include: the extent to which higher US tariffs reduce demand for Canadian exports; how much this spills over into business investment, employment and household spending; how much and how quickly cost increases are passed on to consumer prices; and how inflation expectations evolve. We are focused on ensuring that Canadians continue to have confidence in price stability through this period of global upheaval. We will support economic growth while ensuring inflation remains well controlled. Information note The next scheduled date for announcing the overnight rate target is July 30, 2025. The Bank will publish its next MPR at the same time.
By Marci Dean June 2, 2025
If you’re new to Canada, on a work permit, or simply curious about buying a home in British Columbia as a non-resident, you may have heard some conflicting info. Between federal bans and provincial taxes, it can feel like a maze. ο»Ώ Let’s break it down – simply and clearly – so you know what’s actually possible. 🚫 The Federal Ban on Foreign Buyers (Until 2027) In early 2023, the Canadian government introduced a two-year ban on foreign nationals purchasing residential real estate. In 2024, that ban was extended until January 1, 2027 . ❗ Who’s affected: Foreign nationals who are not Canadian citizens or permanent residents Corporations and entities based outside of Canada βœ… Who’s exempt and can still buy: People on valid work permits (183+ days remaining at time of purchase) Certain international students (who’ve filed 5+ years of Canadian tax returns and are buying under $500K) Refugees or protected persons Those buying jointly with a Canadian spouse or partner πŸ‘‰ Important : Even if you’re allowed to buy under federal rules, there are still provincial taxes to consider. The B.C. Foreign Buyer Tax (a.k.a. the Additional Property Transfer Tax) If you’re a foreign buyer and you’re purchasing property in designated parts of B.C. (including Metro Vancouver, Victoria, Fraser Valley, Kelowna, and Nanaimo), you’ll pay an extra 20% on top of the home’s price. Example: Buying a $1.2 million home as a non-exempt foreign buyer? Standard B.C. Property Transfer Tax: $22,000 Additional 20% Tax : $240,000 Total in taxes : $262,000 😬 Yep – that adds up fast. How to avoid the 20%: You may be exempt if: You’re a B.C. Provincial Nominee Program (PNP) participant buying your primary residence You’re a Canadian citizen or permanent resident You qualify for certain refunds after becoming a permanent resident within a year What Should You Do? If you’re on a work permit or navigating immigration pathways – you may still be able to buy , but it’s critical to understand the rules and the costs. As a mortgage broker, I’ve helped many newcomers figure out: If they’re eligible to buy What taxes apply (and how to reduce them!) What mortgage options are available Want the Full Breakdown? I’ve created a free, downloadable one-page Foreign Buyer Reference Guide with a full tax breakdown and clear examples. πŸ“… [Click here to download it now] Have questions about whether you can buy property in B.C.? Let’s chat. Ask Marci About Mortgages. βœ…Honest advice. βœ… Clear answers. βœ… No confusion.