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Correcting Errors in an Ontario Corporation's Articles of Incorporation

How to fix a mistake in an Ontario corporation's Articles of Incorporation after the fact — the difference between a correction and an amendment.

Corporate5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • Articles of Incorporation are typically prepared quickly, often under time pressure to get a new business up and running.
  • Which category your situation falls into is not always obvious, and getting it wrong can mean using the wrong process for your specific mistake.
  • Where a genuine amendment is needed, the general process looks like this: 1.

Finding a mistake in your corporation's founding document is more common than most business owners expect — a misspelled name, a share structure that does not match what the founders actually agreed, or a restriction nobody meant to include. The good news is that Ontario corporate law does not treat your Articles of Incorporation as permanently fixed. The process to fix them, however, depends on what kind of mistake you are actually dealing with.

This article explains how to approach correcting an error in Articles of Incorporation for an Ontario Business Corporations Act (OBCA) corporation, and why the fix for a genuine clerical slip looks different from the fix for a substantive change decided later.

Why Errors in Articles Happen

Articles of Incorporation are typically prepared quickly, often under time pressure to get a new business up and running. Common sources of error include:

Two Different Paths, Depending on the Error

Type of ErrorGeneral ApproachWho Is Typically Involved
A genuine clerical or administrative mistake caught soon after filing (e.g., an obvious data-entry error)A correction process aimed specifically at fixing the record to match what was actually intendedOften more administrative in nature, but confirm the current process and any applicable requirements with the Ontario Business Registry or a corporate lawyer
A substantive change — the articles are accurate to what was filed, but the corporation now wants something different (share structure, restrictions, name)A formal amendment, decided through the corporation's normal governance processDirectors' resolution, followed by a shareholders' resolution, then a filing with the registry

Which category your situation falls into is not always obvious, and getting it wrong can mean using the wrong process for your specific mistake. If you are not sure whether what you are dealing with is a correctable clerical error or a substantive change that needs a full amendment, that is a good reason to get advice before filing anything.

Step-by-Step: Filing a Formal Amendment

Where a genuine amendment is needed, the general process looks like this:

  1. Identify exactly what needs to change in the articles, and draft the replacement wording.
  2. Pass a directors' resolution approving the proposed amendment and calling a shareholders' meeting (or circulating a written resolution) to approve it.
  3. Obtain shareholder approval. Amending the articles of an OBCA corporation generally requires a special resolution — a higher voting threshold than ordinary business, often described as at least two-thirds of the votes cast. Check your specific articles and any unanimous shareholder agreement for requirements beyond this default.
  4. File Articles of Amendment through the Ontario Business Registry, along with any applicable filing fee.
  5. Update the minute book to reflect the amended articles and the resolutions that approved them.
  6. Flow the change through to anything that references the old articles — business name registrations, extra-provincial registrations, banking documentation, and any commercial agreements that quote the corporation's articles or share structure.

What Happens to Documents That Already Reference the Old Articles

An amendment changes the corporation's articles going forward; it does not automatically update every external document that referenced the old version. After an amendment, review:

Practical Tips to Avoid the Next Error

Frequently asked questions

Is there a deadline for correcting a clerical error after incorporation?

This depends on the nature of the error and the current process available through the Ontario Business Registry; this article cannot state a specific deadline. Confirm the applicable timeline before assuming you still have time, or that you have missed it.

Does fixing a clerical error require a shareholders' vote like a full amendment does?

Not necessarily — a genuine clerical correction is generally treated differently from a substantive change decided by the corporation's governance process, but confirm which category applies to your specific situation before filing.

What if the mistake also affected our business name registration or extra-provincial filing?

Related registrations often need to be updated separately once the underlying articles are corrected or amended — fixing the articles alone does not automatically cascade to every other registration tied to the corporation.

Can we just incorporate a new corporation instead of fixing the old one?

Occasionally that is genuinely simpler, but it comes with its own consequences — a new legal entity, a new incorporation date, and the need to re-do contracts, licences, and registrations. It is rarely the first option to reach for.

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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