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Deficiency After Power of Sale: Do You Still Owe Money in Ontario?

Find out whether an Ontario lender can sue for a shortfall after a power of sale, how long it has to do so, and what defences may be available.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • A lender's claim for the shortfall after a power of sale must be started within the later of 10 years after the cause of action arose and 10 years after the liable person's interest in the land was conveyed.
  • Selling the property does not make the lender lose the longer limitation period for its debt claim.
  • A lender must take reasonable precautions to obtain the true market value, which is central to many shortfall disputes.

Sometimes a house sells under power of sale for less than the mortgage debt plus costs. The gap is called a deficiency or shortfall. Many borrowers assume the debt ends when the house is gone, and that is not always so.

This article explains whether a lender can pursue you for the shortfall, how long it has to do so, and the main points that may be raised in response. Whether you actually owe anything depends on your mortgage and the facts of the sale.

What a deficiency is

A deficiency is the gap that can be left when a power of sale brings in less than the mortgage debt and the costs of selling. How the sale money is applied depends on the mortgage and the lender's accounting, so it is worth confirming with a lawyer. A lender selling under power of sale must take reasonable precautions to obtain the true market value of the property as of the date of sale. If the money falls short, the lender may look to the borrower's promise to repay in the mortgage, known as the covenant. Whether a lender can recover a shortfall depends on that covenant and on whether the sale achieved true market value, so you should have the mortgage reviewed.

Can the lender sue for the shortfall?

Often it can try. A lender's claim on the mortgage covenant to repay, such as a claim for the shortfall after a power of sale, must be started within the later of 10 years after the cause of action arose and 10 years after the liable person's interest in the land was conveyed or transferred. This applies instead of the two-year period under the Limitations Act, 2002, and it covers guarantees too.

A lender does not lose the longer limitation period for a debt claim just because the mortgaged property has since been sold. So a sale closing does not by itself end your exposure.

Defences and challenges to consider

The central question in many shortfall disputes is the price. A lender selling under power of sale must take reasonable precautions to obtain the true market value of the property as of the date of sale, and a hasty or secretive sale can cast doubt on whether a proper price was obtained. If the sale was poorly run, that may affect what the lender can claim, though the outcome depends on the evidence.

The second point is timing. If the lender waits too long, the limitation period may be argued. A lawyer can calculate the dates from your documents.

The third point is the amount claimed. No fine, penalty or rate of interest may be charged on mortgage arrears that increases the charge on the arrears beyond the rate payable on principal not in arrears, and interest on arrears at a rate no higher than the mortgage rate is allowed. Review the lender's figures for charges of this kind.

Timing and the closed sale

Once the power of sale closes, the borrower can no longer rely on section 22 of the Mortgages Act, which lets a borrower in default stop the lender from enforcing by paying the arrears and the lender's necessary expenses, and is limited to a claim for damages against the lender. The buyer's title is also usually safe. Where notice was given in professed compliance with the Mortgages Act, the purchaser's title cannot be attacked because of a defect in the sale process, and anyone harmed has a remedy against the lender who sold.

That protection does not extend to a purchaser who had actual notice of the defects. In practice, concerns about the sale are usually raised against the lender, so act promptly.

What to do next

Frequently asked questions

Does the debt disappear when the house is sold?

Not necessarily. A lender may claim a shortfall on the mortgage covenant, and it does not lose the longer limitation period just because the property was sold. Whether it can recover depends on your mortgage and the sale.

How long does the lender have to sue?

The claim must be started within the later of 10 years after the cause of action arose and 10 years after the liable person's interest in the land was conveyed or transferred. The two-year Limitations Act, 2002 period does not apply to this kind of claim.

Can I argue the house sold too cheaply?

The lender must take reasonable precautions to obtain the true market value at the date of sale, and a hasty or secretive sale can raise doubt about the price. Whether the argument succeeds depends on the evidence, so get advice.

Are guarantors affected too?

The same longer limitation period covers guarantees. A guarantor should have the documents reviewed by a lawyer.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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