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Increasing Authorized Share Capital or Adding a Share Class in Ontario

How an Ontario corporation amends its articles to increase authorized share capital or create a new class of shares, and what the new terms need to say.

Corporate5 min readTSLBy the Treadstone Law team · OntarioUpdated 2026-07
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Key takeaways
  • Some corporations authorize an unlimited number of shares of a class; others set a specific cap.
  • - Bringing in an investor who wants shares with different rights than the founders' common shares — for example, a fixed dividend or priority on a sale.
  • Whether you're creating a brand-new class or amending an existing one, the amended articles need to spell out the rights, privileges, restrictions, and conditions attached to it: Getting…

At some point, many growing Ontario corporations outgrow the simple share structure they started with. Maybe an investor wants preferred shares with specific rights, or the owners want to bring in a key employee without giving them full voting control, or the founders' original articles simply didn't authorize enough shares to issue. In each case, the fix usually involves amending the corporation's articles to add a share class or increase how many shares it is authorized to issue.

This is a formal legal step, not a bookkeeping entry — it changes the corporation's constating document. This article walks through what's involved.

Authorized Capital vs. Issued Shares: A Distinction Worth Getting Right

These two ideas get mixed up often, and the mix-up causes confusion later:

A corporation that wants to issue more shares than its articles currently authorize, or wants to issue a type of share (a new class) that doesn't exist in its articles yet, needs to amend its articles first. Simply deciding to issue new shares isn't enough if the class or the authorized number doesn't already exist.

Why Corporations Make This Change

What the New Share Terms Need to Specify

Whether you're creating a brand-new class or amending an existing one, the amended articles need to spell out the rights, privileges, restrictions, and conditions attached to it:

Right or conditionWhat it determines
Voting rightsWhether the class votes at shareholder meetings, and on what matters
Dividend rightsWhether the class receives dividends, and whether at a fixed rate or priority ahead of other classes
Redemption / retraction rightsWhether the corporation can force a buy-back of the shares, or the shareholder can force the corporation to redeem them
Priority on dissolutionThe order in which classes are paid out if the corporation is wound up

Getting these terms right at the drafting stage matters — a share class with poorly defined rights can create disputes between shareholders down the road, particularly if the corporation later has a falling-out between owners or a sale on the table.

Steps to Amend Your Share Structure

  1. Decide what the new class or increased authorization needs to accomplish — this is a business and tax conversation as much as a legal one.
  2. Draft the specific rights, privileges, restrictions, and conditions attached to the new or amended class.
  3. Check your existing governing documents, including any unanimous shareholder agreement, for provisions that require shareholder consent before the articles can be amended.
  4. Prepare and file Articles of Amendment through the Ontario Business Registry, along with the applicable government filing fee — confirm the current amount before filing, since fees are periodically updated.
  5. Update the minute book, including share registers and any new share certificates issued under the amended structure.
  6. Coordinate with your accountant on any tax filings or elections that need to happen alongside the corporate amendment.

Common Pitfalls to Avoid

Frequently asked questions

Can I just issue more shares without amending my articles?

Only if your articles already authorize enough shares of that class. If not, you need to file Articles of Amendment first to increase the authorized number or create the class before any shares can be validly issued.

Does adding a share class affect existing shareholders' rights?

It can, depending on how the new class is structured — for example, a new class with priority on dividends or dissolution can effectively change what existing shareholders receive. This is exactly why a unanimous shareholder agreement often requires shareholder sign-off on this kind of amendment.

Do I need a lawyer to draft the new share terms?

Given how much can turn on the precise wording of voting, dividend, redemption, and dissolution rights, this is not an area to draft from a template without legal review — ambiguous terms are a common source of shareholder disputes.

How long does an amendment like this take?

Timelines depend on how quickly the new terms are finalized and how the amendment is filed; there's no fixed processing time that applies to every filing, so build in a reasonable buffer if the change is tied to a closing date.

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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