OTTAWA REAL ESTATE
Do You Have to Pay Off Your Mortgage When You Sell?
Do You Have to Pay Off Your Mortgage When You Sell Your Ontario Home?
Yes — when you sell, your existing mortgage has to be dealt with, because it’s secured against the home and can’t simply be left behind. But “paying it off” isn’t your only option. You can discharge it (pay it off from the sale proceeds at closing), port it to your next home, or in some cases have the buyer assume it. Which path fits depends on your mortgage, your plans, and whether you’re buying again. Understanding the options can save you money — and sometimes a prepayment penalty.
Here’s what actually happens to your mortgage when you sell, and how to choose the best route.
What happens to your mortgage when you sell?
Your mortgage is a loan secured against your home. When you sell, the buyer needs clear title, which means your mortgage has to be removed from the property. That’s non-negotiable — you can’t transfer the home to a buyer with your mortgage still attached unless it’s being assumed. So in every sale, the mortgage is resolved one way or another at closing.
The good news is that resolving it usually happens automatically through the sale proceeds and your lawyer, and you have more than one way to handle it. General information on mortgages and your options is available from the Financial Consumer Agency of Canada.
Option 1: Discharge the mortgage (pay it off at closing)
The most common route is simply to pay off the mortgage from your sale proceeds. At closing, your lawyer uses the money from the buyer to pay your lender the outstanding balance (plus any prepayment penalty if you’re breaking the term early), and the mortgage is discharged from title. Whatever remains after the payoff and your other selling costs is your net proceeds.
This is straightforward and what most sellers do. The main thing to watch is the prepayment penalty if you’re breaking a closed mortgage mid-term — a fixed-rate penalty in particular can be significant, which is covered in detail in the guide on the mortgage prepayment penalty when you sell. You never handle the payoff yourself; it flows through your lawyer’s trust account, so you don’t need to arrange a lump-sum payment out of pocket — it simply comes off the top of your proceeds.
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Option 2: Port your mortgage to your next home
If you’re buying another home, porting lets you carry your existing mortgage — its rate, terms, and remaining balance — to the new property, instead of breaking it. The big advantage: porting typically avoids the prepayment penalty and lets you keep your current interest rate, which is especially valuable if your rate is lower than what’s available now.
Not every mortgage is portable, and porting has to be timed to line up your sale and purchase, sometimes with a short window to complete both. If your rate is good and you’re moving up, porting is often the single most cost-effective option, and it’s worth asking your lender about early. Where current rates sit — driven by the Bank of Canada — determines how valuable keeping your existing rate really is.
Option 3: Have the buyer assume your mortgage
In some cases, a buyer can assume your existing mortgage — taking it over at your rate and terms — with the lender’s approval. This is uncommon and depends on your mortgage being assumable and the buyer qualifying, but it can be attractive when your rate is well below current market rates, effectively making your mortgage a selling feature.
Assumption is more complicated than a standard sale and requires lender cooperation and buyer qualification, so it’s not an everyday route. But in a higher-rate environment, an assumable low-rate mortgage can genuinely add appeal to your home, so it’s worth knowing whether yours qualifies.
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Option 4: Blend-and-extend and other lender options
Some lenders offer a blend-and-extend or “blend-and-increase” arrangement, where instead of breaking your mortgage, you blend your existing rate with a current rate and extend the term, often when combined with financing your next home through the same lender. This can reduce or avoid a penalty while adjusting your mortgage to your new situation.
These options are lender-specific and depend on the fine print of your mortgage, so the right move is to ask your lender directly what’s available to you. General guidance on mortgage options from CMHC is a useful starting point before that conversation.
How porting actually works (and its timing)
Porting sounds simple but has moving parts worth understanding. When you port, your lender re-approves you for the mortgage on the new property — you still have to qualify — and carries your existing rate over. If your new home costs more and you need to borrow more, the additional amount is usually taken at current rates and blended with your existing rate. Qualification follows the same mortgage rules the Financial Consumer Agency of Canada explains, so a change in your income or debts since you first got the mortgage can matter.
Timing is the catch. Porting requires your sale and purchase to happen close together, and lenders allow only a limited window — sometimes days, sometimes longer — between the two. If the timing doesn’t line up, bridge financing can cover a short gap. This is exactly the choreography that makes a simultaneous buy-and-sell smooth or stressful, so raise porting with your lender early, before you’re committed on either end.
Choosing the right option for your situation
Which route is best comes down to a few questions. Are you buying again? If so, porting often wins by preserving your rate and skipping a penalty. Is your current rate well below today’s? Then keeping it — by porting, or via an assumable mortgage as a selling feature — is valuable. Not buying, or is your term nearly up? Discharging is simple, and the penalty may be small or nil. Housing conditions reported by Statistics Canada and where rates sit shape which option saves the most at any given time.
There’s rarely a one-size answer, which is why this decision is worth a conversation with both your lender and your agent before you list — not after you’ve accepted an offer and the clock is running.
The role of your lawyer in the discharge
However you handle the mortgage, your real estate lawyer manages the mechanics at closing. They obtain the payout statement from your lender, ensure the mortgage is paid and formally discharged from title, and handle the flow of funds so the buyer gets clear title and you get your net proceeds. In Ontario, a lawyer is required to close a property transfer, and the Government of Ontario explains why.
Your job is mainly to give your lawyer your mortgage details early and confirm the payout figure with your lender. A registered agent coordinates the overall transaction within the professional standards set by the Real Estate Council of Ontario. If you are selling your current home and buying the next one, the guide to selling and buying a home at the same time covers timing, bridge financing and closing dates.
What if you owe more than the home is worth?
Occasionally, a seller owes more on the mortgage than the home will sell for — negative equity, sometimes called being “underwater.” In that case,e the sale proceeds won’t fully cover the mortgage payoff, and you’d need to make up the shortfall from other funds, or work with your lender on options. This is uncommon in a stable or rising market but can happen after a significant market drop or when little principal has been paid down.
If you suspect you’re in this position, it’s essential to know before you list, because it changes everything about how — and whether — to sell right now. An honest net-proceeds estimate and a candid conversation with your lender come first. Local market conditions tracked by the Ottawa Real Estate Board tell you where your home’s value likely sits relative to what you owe.
How this fits your net proceeds and next purchase
Your mortgage payoff is usually the single largest deduction between your sale price and your net proceeds, so how you handle it directly shapes what you walk away with. Porting can preserve a good rate and skip a penalty; discharging is simple but may cost a penalty; assumption or blend-and-extend can help in specific situations. For move-up sellers, this decision is tightly linked to your next purchase and its financing, and it’s part of coordinating the whole move. Buyers and sellers weighing these moves against current listings on REALTOR.ca are really asking the same question: what’s the most cost-effective way to carry my financing into my next home?
Jason Polonski is a full-time Ottawa REALTOR® with Right at Home Realty who helps sellers think through what happens to their mortgage — discharge, port, or assume — as part of planning the whole move, seven days a week across Kanata, Stittsville, Barrhaven, Manotick, and the wider west end. His Bachelor of Commerce from Concordia University, a double major in Marketing and Finance, means the mortgage-and-financing side of a sale is something he explains clearly and coordinates with your purchase, while pointing you to your lender for the specifics only they can confirm.
Drawing on work with hundreds of Ottawa buyers and sellers, Jason keeps the financing piece from becoming a surprise. If you’re selling with a mortgage still on the home — especially if you’re buying next — a conversation about porting versus discharging before you list can genuinely save you money.
Thinking about selling? See how much your Ottawa home is worth.
Do You Have to Pay Off Your Mortgage (FAQs)
Your mortgage must be dealt with because it’s secured against the home, but paying it off isn’t the only route. You can discharge it from the proceeds at closing, port it to your next home, or, in some cases, have the buyer assume it — you just can’t leave it attached to the property.
Discharging means paying off the outstanding balance (plus any penalty) from your sale proceeds at closing, so the mortgage is removed from the property’s title. It’s the most common route, and your lawyer handles the mechanics.
Porting means carrying your existing mortgage — rate, terms, and balance — to your next home instead of breaking it. It typically avoids the prepayment penalty and preserves your current rate, which is valuable if your rate is lower than today’s, though not every mortgage is portable.
Sometimes, through an assumption, if your mortgage is assumable and the buyer qualifies with lender approval. It’s uncommon and more complex than a standard sale, but a low-rate assumable mortgage can be an attractive selling feature when current rates are higher.
Then the sale proceeds won’t cover the payoff, and you’d need to make up the shortfall or work with your lender. It’s uncommon in a stable market but possible after a downturn, so if you suspect it, confirm your position before listing.
It can, if you break a closed mortgage before its term ends — a variable penalty is usually modest; a fixed one can be substantial. Porting or timing the sale near renewal can avoid it. See the dedicated guide on the mortgage prepayment penalty for details.
