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Bulk Sales and Tax Clearance When Buying Assets in Ontario

What to check when buying business assets in Ontario: WSIB purchase certificates, lien searches, the GST/HST election and how to limit inherited debts.

Buying & Selling a Business4 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Do not assume the seller's debts stay with the seller; some, like WSIB amounts, can follow you if you skip the right step.
  • Request a WSIB purchase certificate before the sale date, and know it is valid for only 30 days from its issue date.
  • You can search for liens against the seller's assets through Ontario's Access Now service.
  • Whether you could inherit sales tax or payroll debts depends on the deal, so protect yourself with contract terms and professional advice.

If you are buying the assets of a business, one of the first worries is whether you could end up paying the seller's unpaid bills. Sellers and brokers sometimes mention bulk sales rules, and many buyers ask whether they apply.

Whether any bulk sale requirements apply to your particular deal is something a lawyer should confirm for you. What you can do without waiting is use the protections that are clearly available: a WSIB certificate, a lien search, careful use of the GST/HST election, and strong terms in the purchase agreement.

Do not rely on old bulk sales habits

Some sellers and brokers still talk about bulk sales affidavits and creditor notices. Ask your lawyer to confirm the current position for your transaction.

The better approach is to treat debt risk as something you manage deliberately. The sections below cover the items that can be checked and documented in an ordinary small-business asset purchase.

WSIB: the purchase certificate

The WSIB issues purchase certificates to verify that a company selling, leasing or transferring all or part of a business has WSIB coverage. If the buyer does not obtain a valid certificate, the WSIB says it may hold the buyer liable for all amounts the vendor owes up to the sale date.

Because the request needs the purchase agreement and asset list, your deal documents should be reasonably settled before you apply. If closing might slip, plan for a second request.

Searching for liens on the assets

A lender may have registered a security interest against the seller's equipment, inventory or other assets. Ontario's Access Now service lets a buyer search the Personal Property Security Registration (PPSR) system for liens against a seller's assets. Listed fees include $8 for an online response and $8 for a certificate response.

How to deal with a lien if one turns up depends on the deal, so it is worth confirming with a lawyer, who can handle it through the closing documents.

Sales tax, payroll and the GST/HST election

Whether a buyer can become responsible for a seller's unpaid sales tax or payroll remittances depends on the structure of the deal and the facts. Because that is not something to guess at, ask your lawyer or accountant to review it before you commit, and build protection into the agreement.

The section 167 GST/HST election is a separate issue. It lets buyer and seller jointly elect so no GST/HST is payable on the sale of a business or part of one, using Form GST44. You must acquire all or substantially all (at least 90%) of the property needed to carry on the business, and it cannot be used if the seller is a GST/HST registrant and the buyer is not.

The form must be filed on or before the day your GST/HST return is due for the first reporting period in which GST/HST would otherwise have been payable. GST/HST can still apply to certain services, leases or licences.

Protections to put in the agreement, and what to do next

RiskPractical step
WSIB amounts owed by the sellerRequest the purchase certificate before the sale date and watch its 30-day validity
Liens on assetsRun a PPSR search through Access Now and ask your lawyer how to deal with anything it shows
Unknown or unpaid seller debtsSeller representations, an indemnity, and possibly a holdback from the price
GST/HST on the saleDecide whether to make the section 167 election and diarize the filing date

If the seller refuses to give assurances about their debts, treat that as useful information about the deal. A lawyer can help you decide whether to adjust the price, add protections or walk away.

Frequently asked questions

Do I still need a bulk sales affidavit in Ontario?

Do not assume the old bulk sales steps are what protects you, and do not assume no steps are needed. Ask your lawyer to confirm what applies to your deal and which practical protections to use instead.

Can I be liable for the seller's WSIB debts?

Yes, it is possible. If the buyer does not obtain a valid WSIB purchase certificate, the WSIB says it may hold the buyer liable for all amounts the vendor owes up to the sale date. The request must be made before the sale date.

How long is a WSIB purchase certificate good for?

It is valid for 30 days from the issue date printed on it. If closing does not occur within that period, you must request a new certificate.

How do I check whether assets have liens on them?

You can search Ontario's PPSR system through Access Now. Listed fees include $8 for an online response and $8 for a certificate response. A lawyer can then deal with any registrations found.

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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