- Attachment is about whether the security interest exists at all as between the lender and the borrower — generally satisfied once there's a valid security agreement, the lender has given…
- Registration is the default, most common method: the secured party files a financing statement on the PPSA registry, describing the debtor and the collateral.
- For some types of collateral, a lender can instead perfect by physically holding the asset — the classic example is a pawnbroker holding an item, or a lender holding physical share…
A lender can do everything right in drafting a security agreement and still end up unprotected if it never actually perfects its security interest. Ontario's Personal Property Security Act (PPSA) gives secured parties two main ways to do this — registering on the public registry, or taking physical possession of the collateral — and which one applies depends heavily on what's being pledged.
This article explains the difference between a security interest attaching and being perfected, how each perfection method works, and which kinds of collateral suit which approach.
Attachment and Perfection Are Not the Same Thing
These two concepts get confused constantly, but they answer different questions. Attachment is about whether the security interest exists at all as between the lender and the borrower — generally satisfied once there's a valid security agreement, the lender has given value, and the borrower has rights in the collateral. Perfection is about whether that security interest is protected against third parties: other creditors, a buyer of the collateral, or a bankruptcy trustee. A security interest can attach and still not be perfected — and an unperfected interest, while it may still bind the borrower, is dangerously exposed to being defeated by other claims.
Perfection by Registration
Registration is the default, most common method: the secured party files a financing statement on the PPSA registry, describing the debtor and the collateral. This works for essentially any type of personal property, doesn't require the lender to hold onto anything physically, and is what supports a general security agreement covering a business's equipment, inventory, and receivables generally.
Perfection by Possession
For some types of collateral, a lender can instead perfect by physically holding the asset — the classic example is a pawnbroker holding an item, or a lender holding physical share certificates or a negotiable instrument. Possession works only for collateral that can actually be physically held and controlled, and it comes with an obvious practical trade-off: the borrower can't use or sell the asset while the lender holds it.
Comparing the Two Methods
| Factor | Perfection by Registration | Perfection by Possession |
|---|---|---|
| Collateral it works for | Almost any personal property, including equipment, inventory, and receivables | Only tangible items or instruments capable of being physically held (e.g., certificated securities, negotiable instruments, goods) |
| Effect on the borrower's use of the asset | Borrower keeps possession and can use or sell inventory in the ordinary course, subject to the security interest | Borrower loses physical access to the asset while the lender holds it |
| Public visibility | Visible to anyone who searches the PPSA registry | Not publicly searchable — visibility depends on who physically has the item |
| Typical use case | GSAs, equipment loans, inventory and receivables financing | Pledges of specific tangible items, some share and instrument financing |
Which Collateral Suits Which Method
Registration is by far the more common route for ordinary business financing, because most commercial collateral — equipment a business needs to keep operating, inventory it needs to sell, receivables it needs to collect — can't practically be handed over to a lender to hold. Possession tends to show up in narrower situations: pledging physical share certificates, certain negotiable instruments, or other tangible items where handing over physical control is actually workable for both sides.
What Happens If You Never Perfect
An unperfected security interest can still be enforceable against the borrower directly, but it's exposed everywhere it matters most: it will generally lose to a competing perfected security interest in the same collateral, and it's vulnerable to being wiped out entirely if the borrower becomes bankrupt. Perfection isn't a technicality to clean up later — it's the step that actually protects the lender's bargain.
Frequently asked questions
Can a security interest exist without being perfected?
Yes — attachment (the security interest existing between borrower and lender) can happen without perfection. But an unperfected interest is exposed to being defeated by other creditors, a buyer of the collateral, or a bankruptcy trustee, so lenders generally treat perfection as essential, not optional.
Why would a lender choose possession over registration?
Possession can be attractive for certain tangible collateral because it doesn't rely on the registry system and gives the lender direct physical control. But it's impractical for most commercial collateral a business actually needs to keep using, which is why registration is far more common overall.
Can you perfect the same collateral both ways at once?
In limited circumstances, a lender could theoretically both register and take possession of certain collateral, but this is unusual in ordinary commercial practice — most lenders pick whichever method fits the collateral type and don't need to double up.
What's the risk of an unperfected security interest?
The lender's claim can be defeated by another creditor with a properly perfected interest in the same collateral, and in a borrower bankruptcy, an unperfected security interest is especially vulnerable to being treated as an unsecured claim. This is one of the more consequential technical mistakes a lender can make.
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