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How to Choose a Lawyer for an Ontario Business Purchase

Learn what to look for when hiring a lawyer for an Ontario business purchase, from transactional experience to fee structure, before you sign anything.

Buying & Selling a Business6 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • A business purchase lawyer ontario buyers should hire needs experience specific to acquisitions, not general commercial practice.
  • Actual transactional experience Ask directly: how many business purchase or sale transactions has this lawyer closed, and were they asset deals, share deals, or both?
  • - [ ] How many business purchase/sale transactions have you closed in the past two years?

Not every lawyer who does "corporate work" has actually closed a business purchase. Wills, real estate closings, and incorporations are corporate-adjacent, but a business acquisition is its own discipline — structuring the deal, negotiating a purchase agreement, and managing the closing mechanics that make or break the transaction.

Picking the wrong lawyer doesn't usually blow up the deal outright. More often it shows up later, as a liability you didn't know you'd assumed, a lease you can't assign, or an employee entitlement nobody flagged. Here's what to actually look for.

Why "a lawyer" isn't the same as "the right lawyer"

A business purchase lawyer ontario buyers should hire needs experience specific to acquisitions, not general commercial practice. The skills that matter — drafting representations and warranties, structuring an asset-vs-share deal, negotiating a working-capital adjustment, coordinating landlord and lender consents — come from doing this type of transaction repeatedly, not from occasional exposure to it.

A lawyer whose practice is mostly real estate closings or general litigation may be entirely competent in their own area and still be the wrong choice here. The purchase agreement in a business sale is a heavily negotiated document with interlocking clauses; getting it wrong is rarely obvious until a problem surfaces after closing.

What to look for

1. Actual transactional experience

Ask directly: how many business purchase or sale transactions has this lawyer closed, and were they asset deals, share deals, or both? You want someone comfortable explaining the practical difference between an Asset Purchase Agreement (APA) and a Share Purchase Agreement (SPA) — not just defining the terms, but describing how the choice changes liability exposure, tax treatment, and closing steps for your specific deal.

2. Comfort with the moving pieces of your deal

Depending on what you're buying, your transaction may touch:

A lawyer who has handled deals with these elements before will spot issues earlier and know which ones are routine versus which need a specialist referral (tax counsel for a complex share sale, for instance).

3. A clear process, not just a resume

Ask what the engagement actually looks like: Who drafts the letter of intent review? Who handles due diligence document requests? Will you deal with the lawyer directly or mostly with support staff? Clear answers here tell you more than credentials alone.

4. Fee transparency

Business purchase legal fees can be billed hourly, at a flat rate, or some hybrid — ask before you sign an engagement letter, not after the first invoice. A lawyer who can't give you a straight answer about how they bill is a warning sign regardless of their experience.

5. Responsiveness during the deal window

Business purchases move on their own timeline — often driven by financing conditions, the seller's own plans, or a landlord's response time. A lawyer juggling too many files, or one who is difficult to reach during a negotiation, can cost you a deal. Ask how many active transactional files they typically carry and how quickly they turn around document review.

Questions to ask before you hire

Buyer's lawyer vs seller's lawyer: different jobs

It's worth understanding that a lawyer acting for the buyer and a lawyer acting for the seller are doing different work, even on the same deal. A buyer's lawyer is focused on due diligence, representations and warranties that protect against undisclosed liabilities, and closing conditions. A seller's lawyer is focused on accurate disclosure, limiting post-closing exposure, and getting to a clean close.

The same lawyer cannot act for both the buyer and the seller on one transaction — this is a basic conflict-of-interest rule, not a matter of preference. If you're told otherwise, that's a reason to look elsewhere.

When to bring the lawyer in

Many buyers wait until they have a signed letter of intent before calling a lawyer. That's usually too late. A lawyer can help you understand which LOI terms are meant to be binding (confidentiality and exclusivity clauses often are, even though price typically isn't) before you sign — not after you've already committed to terms you didn't fully understand.

Frequently asked questions

Do I need a different lawyer for a franchise purchase than for buying an independent business?

Not necessarily a different lawyer, but you do want one comfortable with the Arthur Wishart Act disclosure regime, since franchise resales raise disclosure questions that don't come up in an ordinary business purchase. Ask directly about their franchise experience if that's your situation.

Should my lawyer and accountant be the same person coordinating, or do I manage that myself?

Most transactional lawyers expect to coordinate directly with your accountant on tax structuring questions, since the legal and tax analysis are closely linked in a business purchase. Ask your prospective lawyer how they typically handle that coordination.

Is a real estate lawyer good enough if the deal includes a commercial property?

Not on its own. Real estate expertise helps with the property component, but the business purchase itself — the corporate structure, employee issues, and purchase agreement — needs a lawyer with transactional business experience specifically.

How early should I involve a lawyer if I'm just starting to look at businesses?

Earlier than most buyers think. Even before you sign a letter of intent, a lawyer can flag structural issues to watch for and help you understand what you're agreeing to at each stage, rather than reviewing documents after the fact.

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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