Current to July 17, 2026
In Ontario, a security interest under the Personal Property Security Act (PPSA) gives a lender, seller, or other creditor a real claim against specific business assets, not just a place in line with other creditors.
- It must attach: value given, the debtor has rights in the collateral, and the PPSA's enforceability requirements are met.
- It should be perfected, usually by registration, to protect it against competing third-party claims.
- Priority follows the PPSA's statutory rules, not simply who registered first.
- A properly timed purchase-money security interest (PMSI) can leapfrog even an earlier-registered general security agreement.
- PPSA security has two critical parts: Attachment and Perfection.
- Attachment requires a signed security agreement that evidences the debt and properly describes the collateral.
- Attachment also requires that value be given and that the debtor have rights in the collateral.
- Perfection protects an attached interest against third parties, usually by registration, but sometimes by possession, control, or a temporary statutory rule.
- Registration can help preserve priority, since Ontario's PPSA often ranks competing perfected interests by the earliest registration or perfection event, subject to PMSI, buyer, and other exceptions.
- PPSA searches identify registrations but require legal and factual review.
- Priority depends on statutory rules, perfection, and applicable exceptions.
- A timely perfected PMSI may obtain super-priority in the financed assets.
- Enforcement after default must be conducted in a commercially reasonable manner.
Most people understand how a mortgage works. A bank lends money to a buyer of real estate, registers a mortgage against the title, and if the buyer stops paying, the bank can enforce that mortgage and take back the house. Anyone who's lent money to a business, financed equipment, or taken back part of a purchase price as vendor financing has the same underlying concern, without that familiar structure: what happens if the borrower doesn't pay? In Ontario, the answer is the Personal Property Security Act, or PPSA. It gives lenders, sellers, and financiers the same kind of protection over a business's personal property, such as equipment, inventory, accounts, investment property, and other business assets, that a mortgage gives over real estate, by letting them register a security interest against those assets rather than against land.
What a Security Interest Actually Is
A security interest is an interest in personal property that secures payment or performance. It may cover specific equipment, inventory, or receivables, or substantially all of a debtor's present and after-acquired personal property. The security agreement creates the parties' rights; the PPSA then governs matters such as attachment, perfection, priority, and remedies. A secured party may rank ahead of unsecured creditors, but not automatically ahead of every competing claimant, and enforcement remains subject to the Act, the security agreement, and other applicable law.
Attachment and Perfection/Registration
Attachment is the point at which a security interest becomes effective between the secured party and the debtor. Value must be given, the debtor must have rights in the collateral (or the power to transfer those rights), and the parties must not have postponed attachment. To be enforceable against third parties, the collateral must also be in the secured party's possession or control where the Act permits, or be described in a signed security agreement that satisfies the Act.
Perfection is a separate step and is the process of protecting an attached security interest against third parties, usually by registration, but sometimes by possession, control, or a temporary statutory rule. Under s. 45(3) of Ontario's Personal Property Security Act, a financing statement may be registered before a security agreement is made and before a security interest attaches. However, under s. 19, a security interest is perfected only when it has attached and all steps required for perfection have been completed.
Registration can help preserve priority, because Ontario's PPSA often ranks competing perfected interests by the earliest registration or perfection event, subject to the Act's exceptions for purchase-money security interests, protected buyers, statutory liens, subordination agreements, and other special rules.
Why Priority Is Everything
Priority under the PPSA is not simply a matter of “who registered first.” As a starting point, a perfected security interest will usually rank ahead of an unperfected one. Where competing security interests are both perfected, priority generally depends on the earliest relevant registration, possession, control, or perfection event, subject to the Act's specific rules and exceptions. Where competing interests are both unperfected, priority generally runs from the time of attachment.
That general framework is only the starting point. Purchase-money security interests, buyers in the ordinary course, lien claimants, execution creditors, statutory deemed trusts, lessors, proceeds claims, subordination agreements, and insolvency rules can all change the result. Royal Bank of Canada v. Sparrow Electric Corp., [1997] 1 S.C.R. 411, is a good illustration of how far outside the PPSA a priority dispute can reach. The case pitted a bank's security interest in a debtor's inventory against Revenue Canada's deemed trust claim for unremitted employee source deductions under the Income Tax Act. The Supreme Court sided with the bank: because its security interest had already attached to the inventory before the source deductions came due, the deemed trust had no unencumbered property left to attach to. Parliament did not let that result stand. It later amended the deemed trust provisions so that unremitted source deductions are held in trust and paid to the Receiver General in priority to all security interests, notwithstanding any other law, a super-priority that a PPSA search alone will never reveal.
A current PPSA search is still essential, but it is not the whole answer. The search result has to be reviewed against the financing statements, the security agreements, the debtor names, the collateral descriptions, the method and timing of perfection, the type of collateral, any PMSI or proceeds claim, and any priority, postponement, or intercreditor agreement. Registration is critical, but it is only one part of the priority analysis.
We heard about a deal recently, through the grapevine, where the lawyer's office handling a secured loan closing got tied up finalizing other documents and didn't get around to registering the lender's general security agreement on the PPSR for several weeks. In that window, another creditor of the same borrower registered a security interest against the same equipment. When the borrower defaulted shortly after, the lender's earlier deal ended up with a later priority position purely because of the registration date, not the date the money was actually advanced. It's exactly why same-day registration on closing is standard practice in our office.
Priority Against Bank Act Security
Bank Act security is not a shortcut around provincial priority rules. A lender taking security under s. 427 of the federal Bank Act should not assume that its federal security will automatically outrank an earlier provincial security interest.
In Bank of Montreal v. Innovation Credit Union, 2010 SCC 47, [2010] 3 S.C.R. 3, the Supreme Court of Canada held that a bank taking Bank Act security can acquire only the interest the debtor actually has at the time the Bank Act security is granted. In that case, a credit union's Saskatchewan PPSA security interest had already attached to the collateral before the bank took its Bank Act security. As a result, the debtor's interest was already encumbered, and the bank's later Bank Act security was subject to the credit union's earlier attached interest, even though that PPSA interest had not been registered.
The practical lesson is that a Bank Act registry search is not enough. A lender should also review provincial PPSA registrations, underlying security agreements, debtor ownership, prior encumbrances, collateral history, and priority arrangements. Registration still matters, but Innovation Credit Union shows that priority can turn on what interest the debtor had available to give and when competing interests attached, not simply on which secured party registered first.
Purchase-Money Security Interests
A purchase-money security interest, or PMSI, can give a seller or acquisition lender super-priority in the collateral its credit enabled the debtor to acquire, but the definition, tracing, proceeds, and timing requirements matter. For inventory and its proceeds, the PMSI must generally be perfected when the debtor obtains possession, and prescribed advance written notice must be given to any secured party with an earlier registration covering the same inventory; that notice must be received before the debtor obtains possession. For collateral other than inventory or intangibles, the PMSI generally must be perfected before or within 15 days after the debtor obtains possession. For an intangible, the 15-day period generally runs from attachment. These are different timing regimes, not one universal grace period. A late filing may still perfect the interest going forward, but the special PMSI priority may be lost.
A PMSI can apply to both inventory and equipment, and also to some other types of collateral, but the timing rules are different.
For equipment and most non-inventory goods, the PMSI generally must be perfected before or within the applicable grace period after the debtor obtains possession of the collateral.
For inventory, the rule is stricter. The PMSI generally must be perfected before the debtor obtains possession, and the PMSI holder must give advance written notice to any prior secured party with a registration covering that type of inventory. The prior secured party must receive the notice before the debtor obtains possession.
- Equipment PMSI: usually has a short post-possession perfection window.
- Inventory PMSI: usually requires perfection and notice before possession.
- Intangibles: separate timing rules apply.
In plain English: PMSIs are not just for equipment. They can apply to inventory too, but inventory PMSIs require more advance planning.
A supplier client financed a significant piece of equipment for a customer in the Greater Toronto Area and registered its purchase-money security interest within the statutory window required to obtain PMSI priority. When the customer later restructured its financing and its general lender tried to treat the equipment as part of its blanket security, our client's properly and promptly perfected PMSI ranked ahead of the earlier general security agreement, even though that general lender had registered years before. Missing the PMSI registration window would not necessarily have made the security worthless, but it likely would have cost the client the special super-priority that made recovery possible.
Registration gives notice. It does not prove you were right.
Enforcement on Default
Default triggers a separate enforcement regime under Part V of Ontario's Personal Property Security Act. Subject to the security agreement and the Act, a secured party may notify account debtors to pay the secured party directly and take control of proceeds under s. 61. The secured party may also take possession of the collateral, render certain equipment unusable in a reasonable manner, or dispose of collateral on the debtor's premises under s. 62. These remedies are powerful, but they are procedural; a valid security interest does not give the secured party unlimited discretion.
If the secured party disposes of collateral after default, s. 63(1) permits the disposition, and s. 63(2) provides that it may be by public sale, private sale, lease, or otherwise, but every aspect of the disposition must be commercially reasonable. Subject to the statutory exceptions, the secured party must give at least 15 days' written notice of disposition to the debtor, known owners and obligors, certain secured parties, and others who have given written notice of an interest in the collateral, under s. 63(4).
The proceeds do not simply belong to the secured party. They are applied first to reasonable enforcement and disposition expenses, then to the secured obligation, with any surplus dealt with under s. 64. Section 64 requires the secured party to account for and pay over any surplus in the statutory order, and, unless the security agreement or another Act provides otherwise, the debtor remains liable for any deficiency.
The debtor and other interested parties also have rights before the collateral is finally dealt with. Section 65 governs a secured party's proposal to accept collateral in satisfaction of the obligation, including objection rights that can require the secured party to dispose of the collateral instead. Section 66 gives certain entitled persons a right to redeem the collateral before disposition or deemed acceptance, and gives debtors a limited right to reinstate the security agreement for consumer goods.
The Act also lets an interested person apply to the court for directions or relief where there is a dispute about compliance with Part V. A secured party that cuts corners on notice, valuation, timing, sale process, or accounting can face damages or other court-ordered relief even where the underlying debt, security interest, and priority position are not seriously disputed. Enforcement is not just collection; it is a regulated realization process.
| Concept | What It Means | Requirements | Legal Effect | Common Mistake |
|---|---|---|---|---|
| Attachment | The security interest becomes effective between the debtor and the secured party. | Value is given; the debtor has rights in the collateral or power to transfer them; attachment is not postponed; and third-party enforceability requirements are satisfied. | Creates an enforceable security interest and is a prerequisite to perfection, but does not by itself establish priority. | Assuming a signed security agreement or registration alone means the interest has attached. |
| Perfection | An attached security interest is protected through a method recognized by the PPSA. | Attachment plus the applicable step, usually registration, but sometimes possession, control, or a statutory temporary rule. | Improves protection against third parties and supports priority under the statutory rules; it does not guarantee first priority. | Treating registration as proof of attachment, validity, or priority. |
| Priority | The relative ranking of competing claims to the same collateral. | Apply the PPSA's priority rules, including timing of registration, possession, or perfection, and any special rules or exceptions. | Determines which competing claimant has the superior claim to the collateral or its proceeds. | Assuming the first party to register always wins. |
Five Common Mistakes
- “Registration gives notice—it does not prove validity.”
- “The wrong debtor name can defeat an otherwise careful registration.”
- “Registering too late can mean losing priority.”
- “PMSI timing is collateral-specific, not a universal grace period.”
- “Enforcement still requires proper notice and commercial reasonableness.”
Frequently Asked Questions
It gives public notice and usually perfects an attached security interest; it does not prove validity or first priority.
Generally, when value is given, the debtor has rights in the collateral, and the PPSA's enforceability requirements are met.
No. Priority depends on the PPSA's rules, perfection, timing, and any applicable exceptions or agreements.
A purchase-money security interest may give qualifying acquisition financing super-priority if strict timing and notice rules are met.
Subject to the agreement and the PPSA, it may seize, collect, sell, or otherwise realize on collateral using proper notice and commercially reasonable procedures.
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This article gives general information about Ontario and Canadian law, current to July 17, 2026. It is not legal, tax, accounting, or investment advice, and it doesn't replace advice about your specific situation. Reading it doesn't create a lawyer-client relationship. Laws and practices change. Get advice from a qualified Ontario lawyer before registering, relying on, or enforcing PPSA security.
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