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Checking for Undisclosed Debt and Personal Guarantees Before Buying a Business in Ontario

Learn how Ontario business buyers find loans, guarantees, or co-signed debts attached to a target business that aren't shown in the financials.

Buying & Selling a Business5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • A loan from a family member, another company the owner controls, or an informal lender may never have been recorded as a liability in the same way a bank loan would be.
  • A PPSA search in particular is the standard tool for finding registered liens against a business's assets — and given how inexpensive it is relative to what it can reveal, there's rarely…
  • - [ ] A full list of outstanding loans, lines of credit, and leases, including who they're with and current balances.

Financial statements tell you what the seller wants to show you. They don't always tell you everything the business actually owes, or everyone who has a legal claim against its assets. Loans, guarantees, and co-signed debts can exist outside the numbers a seller volunteers — sometimes because the seller genuinely forgets a smaller obligation, and sometimes because disclosing it would complicate the sale.

Either way, the responsibility for finding undisclosed debt before closing generally falls on the buyer, working with a lawyer and accountant — not on the seller volunteering it.

Why Debt and Guarantees Don't Always Show Up in the Financials

The Searches That Uncover Them

SearchWhat It RevealsApproximate Cost
PPSA search (Personal Property Security Act)Registered security interests against the business's equipment, inventory, and other personal propertyAbout $8 per search as of mid-2026 (verify the current fee)
Corporate profile report (Ontario Business Registry)Current corporate status and registered informationAbout $8 as of mid-2026 (verify the current fee)
Certificate of status (Ontario Business Registry)Confirms the corporation exists and is in good standingAbout $26 as of mid-2026, ministry-direct (verify the current fee; intermediaries may charge more)
Litigation and judgment searchesOutstanding lawsuits or judgments that could translate into debtVaries by search provider

A PPSA search in particular is the standard tool for finding registered liens against a business's assets — and given how inexpensive it is relative to what it can reveal, there's rarely a good reason to skip it.

Documents to Request Directly From the Seller

Building In Protection Anyway

Searches and document requests reduce the risk of surprises, but they don't eliminate it entirely — informal arrangements don't always show up in a registry search. That's why buyers also build contractual protection into the deal:

Step-by-Step Before Closing

  1. Run a PPSA search against the seller and, where relevant, specific major assets.
  2. Order a corporate profile report and certificate of status from the Ontario Business Registry to confirm the corporation's standing.
  3. Request full financial and lender detail directly from the seller, not just summarized statements.
  4. Follow up on anything registered but unexplained — a lien or registration that doesn't match what the seller disclosed needs an answer before you close.
  5. Obtain payout statements from any known lenders so debts can be settled or accounted for at closing.
  6. Build remaining risk into the purchase agreement through representations, indemnities, and holdbacks, since no search catches everything.

Frequently asked questions

Will a PPSA search catch every undisclosed debt?

No. It reveals registered security interests against personal property, which catches many secured loans and equipment financing arrangements, but it won't reveal an unsecured personal loan between the owner and a family member, for example. That's why document requests and contractual protections still matter alongside the search.

What happens if I discover undisclosed debt after signing a letter of intent but before closing?

This needs to go back to your lawyer and accountant right away — it can affect the price, the closing conditions, or whether you proceed with the deal at all. Don't assume it will simply be resolved by the time closing arrives.

Does a share purchase carry more risk here than an asset purchase?

Generally, yes. In a share purchase, you're acquiring the corporation itself, including any debts, guarantees, and liabilities it carries, known or unknown, unless specifically addressed in the agreement. In an asset purchase, you typically assume only the liabilities you specifically agree to take on, so undisclosed debt tied to the seller's corporation is more likely to stay behind with the seller.

Am I responsible for a personal guarantee the seller gave before I bought the business?

Generally, a personal guarantee given by the seller personally stays with the seller unless the lender agrees to release it and substitute a new guarantee from you. This is exactly the kind of arrangement that needs to be identified and addressed directly with the lender before closing, not assumed to simply transfer.

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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