Skip to main content
Free Buying a Business Tool

Business Acquisition Due Diligence Checklist

Describe the deal and get an Ontario due diligence checklist tailored to it: the searches to run, the documents to request and the risks to check. Tick items off, print it, and bring it to your lawyer.

1. Describe the deal

Your checklist updates as you answer. Pick your best guess for now; you can change it later.

Deal type

Not decided shows both asset and share items.

Employees
Premises
Does it need licences or permits to operate?
Is the business a franchise?
Is it a regulated professional practice?

For example dental, medical or accounting.

Does it have a significant brand, IP or online presence?
Does it depend on key customer or supplier contracts?
Does it have significant inventory or equipment?
Is there environmental exposure?

For example manufacturing, auto repair, dry cleaning, fuel or chemicals.

Will you use bank financing?
Is the seller a non-resident of Canada?

2. Your checklist (47 items)

Show

  • criticalSeller provides

    Confirms the corporation's name, share structure and any restrictions on share transfers or business activities. Compare them to what the seller has told you.

  • criticalSeller provides

    Directors' and shareholders' resolutions, director and officer registers. Gaps or missing approvals can mean past share issuances or dividends were not properly authorized.

  • criticalSeller provides

    Proves who owns the shares you are buying. Make sure every issuance and transfer is recorded and every holder is signing, so you receive clean title to 100% of what you are paying for.

  • criticalSeller provides

    Look for rights of first refusal, consent-to-sale requirements, and drag-along or tag-along rights. These can block or reshape the sale, even in an asset deal.

  • criticalSeller provides

    Directors' approval and, where the sale is of all or substantially all of the corporation's property outside the ordinary course, a shareholders' special resolution under the OBCA. Without it the sale can be challenged.

  • importantSeller provides

    Governs how directors and shareholders act, including approval and signing authority. Check that the sale can be approved the way the seller says it will be.

  • importantSeller provides

    Private Ontario (OBCA) corporations have been required to keep this register since January 1, 2023. Check that it exists, is current, and matches the securities register.

  • importantLawyer searches

    Confirms the corporation is active and shows its registered address, directors and officers, and filing history. Order it early and again just before closing.

  • criticalAccountant reviews

    Annual statements for the last three years and current-year interim statements. Your accountant should reconcile them to tax filings and bank deposits.

  • criticalAccountant reviews

    HST returns plus CRA statements of account for HST and payroll source deductions. Unremitted source deductions can create director liability and, in a share deal, stay with the company you are buying.

  • criticalAccountant reviews

    Documents behind owner expenses, one-time costs and adjustments that make earnings look higher. The price is usually built on these numbers, so each add-back needs evidence.

  • criticalAccountant reviews

    In a share deal the company's past tax liabilities stay with it. Review open tax years and make sure the purchase agreement has an indemnity, and ideally a holdback, to cover pre-closing tax.

  • importantAccountant reviews

    Shows what was filed and what CRA accepted. Differences between the returns and the financial statements are a reason to ask questions.

  • importantAccountant reviews

    Proof that source deductions, EHT and other payroll amounts have been remitted on time. Compare to payroll registers and the CRA account.

  • importantAccountant reviews

    Shows collection risk, stretched suppliers and how much working capital the business really needs. Review at signing and again near closing.

  • importantSeller provides

    All loans, lines of credit, shareholder loans and credit cards with balances and terms. In a share deal this debt comes with the company unless paid out.

  • importantAccountant reviews

    An asset purchase may qualify for the election under section 167 of the Excise Tax Act, which can avoid paying HST on the assets. Confirm eligibility and the filing steps before closing.

  • importantAccountant reviews

    How the price is split among equipment, inventory, goodwill and other assets affects tax for both sides. Agree it early with your accountant.

  • criticalLawyer searches

    Finds lenders and lessors with security over the business's personal property. Registered security must be discharged or dealt with at closing. Ontario no longer has a Bulk Sales Act, so searches like this one do much of the protective work.

  • criticalLawyer searches

    Superior Court of Justice, including Small Claims Court, against the corporation, the seller and key principals. Reveals lawsuits you may not have been told about.

  • importantLawyer searches

    Checks whether the seller or the corporation has filed or been subject to a proposal, bankruptcy or receivership.

  • importantLawyer searches

    Finds unpaid judgments registered against the seller or the corporation that can attach to property.

  • importantLawyer searches

    In an asset purchase, the buyer can be held liable for the seller's unpaid WSIB amounts under section 146 of the Workplace Safety and Insurance Act, 1997. A purchase certificate, requested before closing and issued only if the seller's account is in good standing, waives that liability. In a share purchase, any arrears stay with the company you are buying. Either way, ask the seller to authorize release of its account information.

  • importantSeller provides

    A complete list with copies: customers, suppliers, leases, licences, distribution and service agreements. Start the contract review from this list.

  • importantLawyer searches

    In an asset purchase, contracts do not transfer on their own. Identify which need the other party's consent and build consents into the closing plan.

  • importantLawyer searches

    In a share purchase the contracts stay in place, but many allow the other party to terminate or require notice or consent when ownership changes.

  • importantSeller provides

    Guarantees or indemnities the business has given for other people's obligations. These can be significant liabilities that do not appear on the balance sheet.

  • standardSeller provides

    Restrictions the business has given to others (or received) that could limit where or how you operate after closing.

  • criticalSeller provides

    Remaining term and renewal options, rent and additional rent, use clause, relocation or demolition clauses, and any personal guarantees. A short remaining term can undermine the value of the business.

  • criticalLawyer searches
  • importantLawyer searches

    A landlord's written confirmation that the lease is in good standing, the rent is paid up, and there are no defaults. It protects you from surprises after closing.

  • importantSeller provides

    Include prior service dates, position, pay, hours, leave status and accrued vacation. These drive termination costs and continuity of service.

  • importantSeller provides

    Termination clauses that do not comply with the Employment Standards Act may be unenforceable, which can mean common-law notice is owed instead.

  • importantLawyer searches

    Overtime, vacation pay, public holiday pay, hours of work and record-keeping. Past non-compliance can be a liability of the business.

  • importantLawyer searches

    Decide which employees the buyer will hire and on what terms. Employees the buyer hires generally carry their prior service with the seller, so plan for that.

  • importantLawyer searches

    Agree who pays notice, termination and severance for employees who are not offered jobs, and price it into the deal.

  • importantLawyer searches

    Workers treated as contractors may be employees in law, which can mean unpaid CPP, EI, tax and employment standards entitlements.

    Contractor classification checker
  • standardSeller provides

    Plan documents, premiums and any obligations that continue after closing, including whether the buyer must replace them.

  • standardSeller provides

    Claims history affects premiums, and open health and safety orders from the Ministry of Labour, Immigration, Training and Skills Development may need to be fixed. Ask for inspection reports.

  • importantLawyer searches

    PIPEDA permits limited disclosure of personal information to a prospective buyer for a business transaction, under conditions. Check what the business collects, how it was collected, and what you may receive and use.

  • standardSeller provides

    Key software and subscriptions the business depends on, and whether the licences can be assigned or continue after a sale.

  • criticalSeller provides

    Lawsuits, demand letters, regulatory complaints and disputes with customers, suppliers or employees, including those not yet formal.

  • importantSeller provides

    Coverage, limits, deductibles and the loss history. Check whether policies can transfer or whether you need new cover on closing day.

  • standardSeller provides

    History of warranty, refund and return claims, and what the business promised customers. After closing, you may be the one expected to honour them.

  • criticalLawyer searches

    Payout statements and discharges for every registered security interest you found in the searches, delivered at or just after closing.

  • importantLawyer searches

    A bill of sale and assignments (asset deal) or share transfers and resignations (share deal), directors' and shareholders' resolutions, landlord consent, and any third-party consents.

  • importantLawyer searches

    A non-compete and non-solicit from the seller, plus the seller's agreed help with training, introductions and handover after closing.

Your progress

0% 0 of 47 items done

Critical items: 0/15

  • Corporate & ownership0/8
  • Financial & tax0/10
  • Searches & liens0/5
  • Contracts0/5
  • Premises & real property0/3
  • Employees0/8
  • IP, data & technology0/2
  • Insurance & disputes0/3
  • Financing & closing0/3

Note: This checklist is a starting point and general information, not legal advice. Every deal needs its own review, and your lawyer and accountant may add or remove items based on the facts.

Want a lawyer to run the searches and review the documents?

Send your deal profile and a lawyer will scope the due diligence for your purchase — the searches, the document review, and what to protect in the purchase agreement. Free, no obligation.

Buying a business?

Our lawyers run the searches, review the contracts and lease, and build the findings into your purchase agreement.

Talk to a Business Lawyer

Legal Guide

How due diligence works when you buy a business in Ontario

Due diligence is how you find out what you are really buying. Here is what to focus on and what to do with what you find.

01

Asset deals and share deals need different checks

In a share purchase you take over the company with its history, so corporate records, tax filings and past liabilities matter most. In an asset purchase you leave most liabilities behind, and the focus shifts to liens on the assets, contracts that need consent, and employees.

02

Searches protect you from what the seller forgets to mention

PPSA, litigation, execution and bankruptcy searches are public-record checks that do not depend on the seller's honesty. Ontario no longer has a Bulk Sales Act, so PPSA searches and lien discharges at closing now do much of the protective work.

03

Contracts and leases often decide whether the business keeps its value

A lease that cannot be assigned, or a key customer contract that can be terminated when ownership changes, can erase the value you thought you were buying. Review consent and change-of-control clauses early because third parties take time to respond.

04

Employees come with obligations

Accrued vacation, prior service, termination clauses and any misclassified contractors all affect cost. If the workforce is unionized, the Labour Relations Act can bind a buyer to the existing bargaining rights and agreement.

05

Some risks sit outside the financials

Environmental contamination, unpaid source deductions, missing licences and regulatory ownership rules for professional practices do not show up in a profit and loss statement. They are the reason a tailored checklist beats a generic one.

06

Findings should change the deal, not just the file

Due diligence is only useful if it feeds the purchase agreement: price adjustments, representations, special indemnities, holdbacks and closing conditions. Raise findings promptly, while you still have negotiating leverage.

Is a letter of intent binding?Buying a business in Ontario: checklistAsset vs share sale checker

What is due diligence when buying a business?

Due diligence is the investigation a buyer does before closing to confirm the business is what the seller says it is. It covers financial and tax records, corporate ownership, liens and lawsuits, contracts, leases, employees, licences, intellectual property and any environmental or regulatory issues. The results help you decide whether to proceed, adjust the price, or change the terms of the purchase agreement.

How long does due diligence take?

The letter of intent usually sets a due diligence period, often measured in weeks. How long you actually need depends on the size and complexity of the business and how quickly the seller provides documents, landlords and other third parties respond, and searches come back. Ask for a document list early so the clock is spent reviewing, not waiting.

What searches does a lawyer do when you buy a business in Ontario?

Typically a corporate profile report from the Ontario Business Registry, a PPSA search for registered security interests, litigation searches in the Superior Court of Justice including Small Claims Court, execution (writ) searches and a bankruptcy and insolvency search. Depending on the deal, a lawyer may also run trademark searches, a title search and tax certificate for owned property, and a WSIB purchase certificate.

Do I need due diligence for an asset purchase?

Yes. An asset purchase leaves many of the seller's liabilities behind, but you still need to know what you are buying. The focus shifts to liens on the assets, which contracts and licences can be assigned and which need consent, the lease, and what happens to the employees.

What happens if due diligence finds a problem?

You have several options. You can renegotiate the price, ask for a special indemnity or a holdback of part of the price, make the fix a condition of closing, or walk away if the letter of intent allows it. The right response depends on how serious the problem is and what the signed documents say, so raise it early and get advice.

Does Ontario still have a Bulk Sales Act?

No. Ontario repealed its Bulk Sales Act in 2017. There is no longer a statutory bulk sales process to follow. A buyer's protection now comes mainly from searches (PPSA, execution and litigation), lien discharges at closing, and the representations and indemnities in the purchase agreement.