This article is for Irish company directors and founders who need to change their company constitution—whether for an investment round, updating share structures, or fixing governance issues.
If you're wondering how to legally amend your constitution, what a special resolution actually requires, or what you need to file with the CRO, this guide covers the complete process from proposing changes to registration.
Key Takeaways
• Constitutional changes require a special resolution with 75% shareholder approval and 14 days' notice with exact amendment text.
• You must file Form B10 and amended constitution with the CRO within 28 days; changes take effect immediately upon resolution.
• Investment rounds typically require creating new preference share classes, necessitating constitutional amendments to accommodate investor rights.
• Shareholders holding 10% of voting rights can requisition a general meeting to propose constitutional amendments under Section 178.
• Section 87 requires separate 75% approval from affected share classes before varying their specific rights like voting or dividends.

What Is Your Company Constitution?
Your company constitution contains the rules governing how your company operates internally. Section 15 of the Companies Act 2014 requires every company to have a constitution that binds the company and its members. The constitution covers share structures, director powers, meeting procedures, transfer restrictions, and fundamental governance provisions. Think of it as your company's internal rulebook that everyone involved in the company must follow.
When Should You Change Your Constitution?
Investment rounds typically trigger constitutional amendments because investors require preference share classes with specific rights not in standard constitutions. Changing transfer restrictions, voting rights, or dividend policies requires constitutional amendment since these provisions are embedded in the document. Correcting errors in the original constitution, updating director numbers, or removing outdated provisions are common reasons for amendments. Companies also amend constitutions when restructuring ownership, implementing employee share schemes, or preparing for significant corporate transactions.
What's a Special Resolution?
A special resolution requires at least 75% of votes cast to pass, providing stronger protection than the simple majority needed for ordinary resolutions. Section 191 defines special resolutions and specifies they need at least 14 days' notice to shareholders stating the intention to propose the resolution. The notice must include the exact text of the proposed resolution so shareholders understand what they're voting on. Special resolutions are required for fundamental changes like altering the constitution, changing the company name, or reducing share capital.
How Do You Propose Constitutional Changes?
The board typically proposes constitutional changes by drafting the amendments and calling a general meeting to consider them. Alternatively, shareholders holding at least 10% of voting rights can requisition a general meeting to propose amendments under Section 178. The meeting notice must include the full text of proposed changes. Professional legal advice ensures amendments are properly drafted and don't create unintended conflicts with existing constitutional provisions.
The voting process involves:
- Shareholders vote on the special resolution at a properly convened general meeting with the required notice period
- Section 193 allows private companies to pass written resolutions without meetings if all entitled shareholders sign the resolution
- The resolution must achieve 75% approval from votes cast to pass successfully
- Companies should record the vote in meeting minutes showing who voted and how they voted
Can You Change Everything in the Constitution?
Section 85(2) prohibits constitutional provisions that conflict with mandatory provisions of the Companies Act 2014. You cannot remove fundamental shareholder protections like rights to information, meeting attendance, or statutory remedies through constitutional amendments. Class rights attached to specific share classes require additional approval from that class before they can be varied under Section 87. Attempting to remove these protected rights would be void and unenforceable.
What Are Class Rights?
Class rights are specific entitlements attached to particular share classes, such as enhanced voting, dividend preferences, or liquidation priorities. Section 87 requires companies to obtain approval from the affected share class in a separate class meeting before varying those rights. This protection prevents majority shareholders from unilaterally removing minority protections or changing the balance of rights between classes. The class meeting typically requires 75% approval from that class. This gives minority holders significant protection against unwanted changes.
How Do Investment Rounds Affect Constitutions?
Investors typically require creating new preference share classes with specific rights around dividends, liquidation, board representation, and anti-dilution. These provisions don't exist in standard Irish company constitutions, necessitating amendments to accommodate investor requirements. The amendments must create the new share class, define its rights precisely, and potentially adjust existing ordinary share rights. Investment agreements often reference constitutional provisions, so the two documents must align perfectly to avoid conflicts.
The documents you file with the CRO are as follows:
- Form B10 notifies the CRO of the constitutional change and must be filed within 28 days of passing the special resolution
- You must attach the amended constitution showing all changes
- The filing fee is €30, paid electronically through the CRO's CORE system when submitting the form
- The CRO will reject filings if the amended constitution conflicts with company law or the resolution wasn't properly passed
When Do Changes Take Effect?
Constitutional changes take effect immediately when the special resolution passes, not when you file with the CRO. However, the change isn't opposable against third parties until CRO filing, creating potential issues if you delay registration. This timing distinction matters for investment rounds where investors need constitutional protections active before transferring funds. Best practice is filing with the CRO within days of passing the resolution to ensure public records reflect current constitutional provisions.
Can Shareholders Object to Changes?
Shareholders who voted against the changes cannot block them if the resolution achieved the required 75% approval. However, Section 212 allows shareholders to apply to court for relief if constitutional changes are oppressive or unfairly prejudicial. This remedy protects minorities from majorities abusing their voting power to unfairly disadvantage certain shareholders. The court can cancel the amendment, order the company to purchase dissenting shareholders' shares, or impose other remedies it considers appropriate.
How Do You Increase Authorized Share Capital?
If your constitution specifies maximum authorized share capital, you need constitutional amendment to increase it under Section 85. Many modern constitutions don't specify a maximum, giving unlimited flexibility to issue new shares without constitutional amendment. If increasing authorized capital, the amendment should specify the new maximum and any additional share classes being created. Remember to consider whether increased authorized capital affects the balance between share classes or triggers anti-dilution provisions.
What Are the Costs Involved?
- The CRO filing fee is €30, but professional legal fees for drafting constitutional amendments typically range from €500 to €2,000
- Investment round amendments cost more because they require negotiation with investors, and must align precisely with investment agreements
- Simple changes like updating director numbers or correcting errors are relatively inexpensive
- Getting amendments right the first time prevents expensive correction filings and potential disputes about constitutional interpretation
What About Directors' Service Contracts?
Constitutional changes cannot override existing contractual obligations between the company and directors or employees. Section 160 protects directors from removal during fixed-term contracts, though shareholders can still remove them and pay compensation. If constitutional changes affect directors' rights, consider whether their service contracts need simultaneous amendment. Professional advice ensures constitutional and contractual provisions work together without creating conflicts or unexpected liability.
How Often Should You Review Your Constitution?
Companies should review constitutions before each funding round to ensure they accommodate investor requirements without extensive redrafting. Annual reviews identify outdated provisions and ensure the constitution reflects current ownership and governance structures. Significant corporate events like mergers or restructurings warrant constitutional review to ensure provisions remain appropriate. Proactive reviews prevent discovering problems during due diligence when time pressure makes considered amendments difficult.

Stuart Connolly is a corporate barrister in Ireland and the UK since 2012.
He spent over a decade at Ireland's top law firms including Arthur Cox & William Fry.









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