Founders' agreements: why your UK startup needs one and what to include

Founders' agreements are among the most overlooked yet critical documents for early-stage startups. While it’s tempting to rely on handshakes and shared enthusiasm, formalising your co-founder relationship in writing prevents costly misunderstandings down the line. This guide explains what founders' agreements cover, why they matter, and how to approach them – without replacing tailored advice from a solicitor.

What is a founders' agreement?

A founders' agreement is a legally binding contract between co-founders that outlines the terms of your working relationship, equity ownership, and operational rules. Unlike your company’s articles of association (which govern shareholder rights), this agreement focuses specifically on founder dynamics. It’s typically signed when incorporating your business or shortly after, and it remains private between founders.

Why your UK startup needs one

Without a founders' agreement, disputes over roles, equity, or exits can derail your business. Common scenarios include:

• A co-founder leaving early but retaining full equity.
• Unclear decision-making leading to deadlocks.
• Disagreements over IP ownership for work done pre-incorporation.
• Uneven workload distribution causing resentment.

A well-drafted agreement provides clarity on these issues, protects everyone’s interests, and demonstrates professionalism to investors. For UK startups, it also helps ensure compliance with company law and tax requirements.

Key clauses to include

While every startup’s agreement will differ, these elements are essential:

1. Equity split and vesting:
   Details each founder’s initial shareholding and includes a vesting schedule (e.g., over four years). Vesting means shares are earned gradually, protecting the company if a founder leaves early. Clawback clauses can reclaim unvested shares.

2. Roles and responsibilities:
   Clearly defines each founder’s duties, reporting lines, and time commitments. Avoid vague descriptions like "handling tech" – specify deliverables, such as "lead product development and manage engineering hires".

3. Decision-making processes:
   Outlines how major decisions (e.g., fundraising, hiring key staff, pivoting) are made. Options include unanimous consent, majority voting, or assigning specific veto rights. Include meeting frequency and communication protocols.

4. Intellectual property (IP) assignment:
   Ensures any IP created by founders before or during their involvement belongs to the company. This is crucial for securing investment or selling the business.

5. Confidentiality and non-compete:
   Protects sensitive information and prevents founders from joining rivals or starting competing ventures during their involvement and for a defined period after leaving.

6. Exit scenarios:
   Covers voluntary departure, death, disability, or termination for cause. Addresses how shares are valued and transferred (e.g., right of first refusal for remaining founders) and any post-exit support obligations.

7. Dispute resolution:
   Specifies steps like mediation or arbitration before litigation, saving time and costs if conflicts arise.

Common pitfalls to avoid

Startups often make these mistakes when drafting founders' agreements:

• Delaying creation: Waiting until tensions emerge makes negotiations harder. Aim to finalise within three months of incorporation.
• Overlooking vesting: Skipping vesting risks unfair outcomes if a founder departs prematurely. Standard schedules include a one-year cliff (no vesting until year one) followed by monthly/quarterly increments.
• Using generic templates: While templates provide a starting point, they rarely address your startup’s unique context (e.g., unequal cash investments or part-time founders). Always customise.
• Ignoring tax implications: Issuing shares without considering EMI schemes or HMRC rules can trigger unexpected tax liabilities. Consult an accountant.
• Failing to update: Revisit the agreement after major events like funding rounds or founder departures to ensure it remains relevant.

Practical next steps

1. Start early: Discuss key terms with co-founders before legal drafting begins. Focus on fairness and transparency.
2. Use a template wisely: Platforms like StartupDocs offer UK-compliant templates, but treat them as drafts. Adapt clauses to reflect verbal agreements.
3. Seek legal review: Engage a solicitor specialising in startups to check enforceability and compliance with the Companies Act 2006. Costs vary, but it’s cheaper than dispute resolution later.
4. Store securely: Keep signed copies accessible to all founders via a secure repository, alongside your incorporation documents.

Founders' agreements aren’t about distrust – they’re about ensuring alignment as your startup evolves. By addressing potential issues upfront, you free up energy to focus on growth. For streamlined drafting and management, explore StartupDocs’ template library, which includes editable founders' agreement frameworks with built-in guidance on UK clauses. Remember, this overview isn’t legal advice; consult a professional for your specific circumstances.