NUANS Name Search in Ontario: What It Is, How It Works, and When You Need One

Before Ontario lets you incorporate under a chosen company name, you must prove that name doesn't already belong to someone else. That proof comes from a NUANS name search — and many first-time founders are surprised to learn it's not a simple Google search or a quick government lookup. Understanding how the NUANS system works can save you rejected filings, wasted fees, and the frustration of rebranding before you've even started.

What Is NUANS?

NUANS stands for Newly Upgraded Automated Name Search. It is a federal database administered by Corporations Canada that aggregates:

• Corporate names registered federally under the Canada Business Corporations Act
• Corporate names registered in all provinces and territories that participate (Ontario is one)
• Registered trademarks from the Canadian Intellectual Property Office (CIPO)
• Business names registered in Ontario under the Business Names Act

When you submit a proposed corporate name, NUANS searches this combined database and returns a report listing names that are similar — phonetically, visually, or conceptually — to what you've proposed. The report does not tell you whether your name will be approved; it gives the government the information it needs to make that decision.

When Do You Need a NUANS Search?

You need a NUANS report if you want to incorporate a named company in Ontario — meaning a company whose legal name includes descriptive words (e.g., "Apex Marketing Solutions Inc." or "Renfrew Holdings Ltd.").

You do not need a NUANS report if you incorporate a numbered company. Ontario will simply assign the next available number, such as 1234567 Ontario Inc. Many founders use a numbered company and then register a separate business name (trade name) under the Business Names Act to carry on business under a branded name.

How to Get a NUANS Report

NUANS searches must be ordered through a NUANS search house — a private service provider authorized by the federal government. You cannot search NUANS yourself directly through a government portal for corporate name purposes. Search houses can be found through Corporations Canada's website.

You submit your proposed name and, typically within minutes to a few hours, receive the report.

Cost

Search houses charge a fee as of writing — verify current pricing directly with the provider you choose.

How Long Is a NUANS Report Valid?

A NUANS report is valid for 90 days from the date of the search (verify the current period with ServiceOntario, as this can change). You must file your articles of incorporation and include the report while it is still valid. If you miss the window, you'll need to run a fresh search and pay again.

Practical tip: Don't order your NUANS report until you're ready to proceed with the filing. If you're still deciding on structure or co-founders, wait.

What Makes a Name Unacceptable?

Even if your NUANS report shows no identical match, Ontario (or the federal registry) may still reject your proposed name for several reasons:

Too similar to an existing name

The standard isn't just "identical." Names that sound alike, look alike, or mean the same thing can be considered confusingly similar. "Apex Marketing Solutions Inc." and "Appex Mktg Solutions Inc." are likely too similar.

Missing or wrong corporate identifier

Ontario corporate names must end in one of the legally prescribed identifiers:

• Limited or Ltd.
• Incorporated or Inc.
• Corporation or Corp.

Omitting the identifier, or using "LLC" (an American designation not recognized in Ontario), will get your filing rejected.

Descriptive or generic terms

Names that are purely descriptive ("Ontario Software Company Inc.") or entirely generic are often refused because they don't adequately distinguish your business. A distinctive element — a coined word, a personal name, a specific geographic qualifier — usually helps.

Restricted words

Certain words require regulatory approval before use. "Bank," "Trust," "Insurance," and "Cooperative" are common examples. Professions like "Law," "Medicine," or "Engineering" may require approval from the relevant regulatory college.

Bilingual names

You can have an English and a French form of your corporate name. Both versions are considered together.

Numbered Company vs. Named Company: Which Is Right for You?

Many Ontario businesses incorporate as a numbered company first, start operating under a trade name, and then change the corporate name later if they need to — though name changes do require an amendment to the articles.

NUANS and Trade-marks: An Important Distinction

A NUANS search is not a trade-mark clearance search. Finding a clear NUANS report does not mean you are free to use the name commercially across Canada without risk of trade-mark infringement. Trade-mark law is federal and separate. If building a brand matters to your business, consider a proper trade-mark search and, eventually, a trade-mark application. These are beyond the scope of incorporation.

Frequently asked questions