What You Need To Know About Co-Signing A Mortgage

Darrell McCollom • February 5, 2025

So you’re thinking about co-signing on a mortgage? Great, let’s talk about what that looks like. Although it’s nice to be in a position to help someone qualify for a mortgage, it’s not a decision that you should make lightly. Co-signing a mortgage could have a significant impact on your financial future. Here are some things to consider.


You’re fully responsible for the mortgage.


Regardless if you’re the principal borrower, co-borrower, or co-signor, if your name is on the mortgage, you are 100% responsible for the debt of the mortgage. Although the term co-signor makes it sound like you’re somehow removed from the actual mortgage, you have all the same legal obligations as everyone else on the mortgage. When you co-sign for a mortgage, you guarantee that the mortgage payments will be made, even if you aren’t the one making them.


So, if the primary applicant cannot make the payments for whatever reason, you’ll be expected to make them on their behalf. If payments aren’t made, and the mortgage goes into default, the lender will take legal action. This could negatively impact your credit score. So it’s an excellent idea to make sure you trust the primary applicant or have a way to monitor that payments are, in fact, being made so that you don’t end up in a bad financial situation.

 

You’re on the mortgage until they can qualify to remove you.


Once the initial mortgage term has been completed, you won’t be automatically removed from the mortgage. The primary applicant will have to make a new application in their own name and qualify for the mortgage on their own merit. If they don’t qualify, you’ll be kept on the mortgage for the next term.


So before co-signing, it’s a good idea to discuss how long you can expect your name will be on the mortgage. Having a clear and open conversation with the primary applicant and your independent mortgage professional will help outline expectations.


Co-signing a mortgage impacts your debt service ratio.


When you co-sign for a mortgage, all of the debt of the co-signed mortgage is counted in your debt service ratios. This means that if you’re looking to qualify for another mortgage in the future, you’ll have to include the payments of the co-signed mortgage in those calculations, even though you aren’t the one making the payments directly.


As this could significantly impact the amount you could borrow in the future, before you co-sign a mortgage, you’ll want to assess your financial future and decide if co-signing makes sense.


Co-signing a mortgage means helping someone get ahead.


While there are certainly things to consider when agreeing to co-sign on a mortgage application, chances are, by being a co-signor, you'll be helping someone you care for get ahead in life. The key to co-signing well is to outline expectations and over-communicate through the mortgage process.


If you have any questions about co-signing on a mortgage or about the mortgage application process in general, please connect anytime. It would be a pleasure to work with you.


Darrell McCollum

Bank of Canada Holds Rate at 2.25% — April 29, 2026

By Darrell McCollom • April 29, 2026
The Bank of Canada announced today that it is holding its target for the overnight rate at 2.25%, with the Bank Rate at 2.5% and the deposit rate at 2.20%. This decision comes against a backdrop of significant global uncertainty — and for Canadian homeowners, buyers, and anyone with a mortgage coming up for renewal, here's what it means.

Let’s Talk About Getting Top Dollar for Your Property

By Darrell McCollom • April 22, 2026
When it comes to selling your home, most people think the first call should be to a real estate agent. But the smartest first step often isn’t with your agent—it’s with an independent mortgage professional. Why? Because your mortgage plays a bigger role in your bottom line than most people realize. Planning to Buy After You Sell If selling means you’ll also be purchasing another property, you’ll want to know exactly where you stand financially before listing. Mortgage rules change regularly, and qualifying once doesn’t guarantee you’ll qualify again. Getting a pre-approval in place ensures you know what you can afford and eliminates surprises later. On top of that, reviewing the terms of your existing mortgage could uncover options you may not have considered. For example, porting your mortgage instead of arranging a brand-new one could save you thousands. Selling Without Buying Even if you aren’t planning to buy right away, there’s still an important step: understanding the cost of breaking your mortgage. Unless your mortgage is open, penalties apply—and they can be significant. By reviewing the numbers with a mortgage professional, you might find that simply adjusting your timeline could reduce or even avoid costly fees. Navigating Life Changes In situations like a marital breakdown, it can feel like selling the family home is the only path forward. But that’s not always the case. With the right guidance and a legal separation agreement, one spouse may be able to buy out the other, keeping the home and providing stability for everyone involved. The Bottom Line Selling your property is more than just putting a sign on the lawn—it’s about creating a financial plan that protects your equity and positions you for the best possible outcome. Before you take the leap, let’s sit down and review your options. 📞 If you’re ready to talk strategy and make sure you get top dollar for your property, I’d be happy to connect anytime.