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Registering the Business Name After an Asset Purchase in Ontario

Does buying business assets in Ontario mean you need a new business name registration? Here's how the Business Names Act applies after an asset purchase.

Buying & Selling a Business5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • In a share purchase, the corporation itself does not change.
  • Ontario's Business Names Act requires registration where a corporation, individual, or partnership carries on business, or identifies itself to the public, under a name other than its…
  • The purchase agreement should identify precisely which trade name, if any, is being sold along with the goodwill and other assets.

You bought the equipment, the customer list, the goodwill, and the lease — but did you buy the name over the door? In an asset purchase, that is a separate legal question from everything else in the deal, governed by Ontario's Business Names Act rather than the purchase agreement alone. Getting it wrong is an easy, avoidable mistake for a new owner to make.

This article explains when registration is required, why it matters, and how it fits into your broader closing checklist.

Why This Question Is Different in an Asset Purchase

In a share purchase, the corporation itself does not change. If it was already operating under a registered business name, that registration continues to belong to the same corporate entity — there is generally nothing new to register purely because the shares changed hands (though you should confirm the registration is current and accurate).

In an asset purchase, you are a different legal person or entity from the seller. You are not inheriting the seller's business name registration — you are starting fresh, even if you intend to trade under the exact same name the business used before you bought it.

Do You Actually Need to Register?

Ontario's Business Names Act requires registration where a corporation, individual, or partnership carries on business, or identifies itself to the public, under a name other than its own full legal or corporate name. Ask yourself:

Buying the goodwill associated with a business name does not, by itself, satisfy the registration requirement — goodwill and statutory registration are two different things.

How Registration Typically Fits Into the Deal

  1. Confirm the exact name being purchased. The purchase agreement should identify precisely which trade name, if any, is being sold along with the goodwill and other assets.
  2. Check whether the seller's registration needs to be updated, expired, or left alone. The seller's existing registration does not automatically transfer to you; it may need to be allowed to lapse or amended to reflect that they no longer operate under it.
  3. Register the name yourself, in the name of the corporation, partnership, or individual that will actually be operating the business going forward.
  4. Time it around closing. Many buyers register the name to take effect at or immediately after closing, so there is no period where the business is trading under a name nobody has properly registered.
  5. Keep proof of registration with your other closing documents — you will likely need it to open bank accounts, register for tax accounts, and satisfy landlords or licensing bodies.

What Happens If You Skip It

Operating under an unregistered name is not simply a paperwork technicality. The Business Names Act also limits your ability to rely on the courts to enforce a contract entered into under a name you have not properly registered, until the registration is corrected — a real consequence if a customer or supplier dispute ever ends up in litigation. It is also the kind of gap that due diligence on your own eventual exit, or a lender's or landlord's review, is likely to catch.

Frequently asked questions

If I'm buying assets through a corporation I already own, do I still need to register the trade name?

Yes, if the corporation will operate under any name other than its own full legal corporate name — including the seller's former trade name — that name needs its own registration, separate from your corporation's existence.

Can I just keep using the seller's old registration?

No. A business name registration is tied to the entity that filed it. Once you are a different legal owner, you need your own registration, even if the name itself is identical to what the seller used.

Does registering a business name give me trademark rights to it?

No. Business name registration is a public-notice requirement under the Business Names Act — it does not, by itself, grant exclusive trademark rights. Protecting the name itself is a separate question your lawyer can discuss with you.

What if the seller never registered the name in the first place?

That is worth flagging during due diligence rather than assuming it is fine to inherit an unregistered practice. You will still need to register properly once you take over, regardless of what the seller did or did not do.

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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