Starting a business with a co-founder can feel like the ultimate “we’ve got this” moment.
You’re building something exciting together, splitting the workload, and backing each other through the hard parts. But there’s one conversation most founders put off (usually because it feels awkward): what happens if one of you wants to leave?
A co-founder exit strategy is the plan for that exact scenario. And in practice, it can be the difference between a smooth transition and a stressful, expensive dispute that stalls your business at the worst possible time.
This guide is updated for current expectations around startup governance, investor readiness, and modern business risk - because getting your legal foundations right from day one still matters, and it matters even more once your company has real value.
What Is A Co-Founder Exit Strategy (And What Does It Cover)?
A co-founder exit strategy is an agreed process for what happens if a founder stops working in the business or stops being the “right fit” (whether by choice or because circumstances change).
It’s not about expecting failure or being pessimistic. It’s about setting your business up so it can keep operating and growing even if a key person steps away.
A strong exit strategy usually answers questions like:
- When can a founder leave? (Is there notice required? Are there “good leaver” vs “bad leaver” rules?)
- What happens to their shares? (Do they keep them, sell them, or forfeit some?)
- How is the price set? (Valuation method, independent valuation, formula, or agreed mechanism)
- Who can buy the shares? (Other founders first, the company, existing investors, or outside buyers)
- What about confidential information and IP? (What must be returned or kept confidential?)
- Can they start a competing business? (Restraint-of-trade style clauses where appropriate and enforceable)
- How do you avoid a deadlock? (Voting thresholds, casting vote, dispute resolution)
In New Zealand, a co-founder exit strategy is usually implemented through a mix of documents rather than a single “exit plan”. Most commonly, you’ll see these terms in a Shareholders Agreement, and sometimes supported by a Company Constitution (particularly where there are multiple shareholders or future investors involved).
Why Do I Need A Co-Founder Exit Strategy If We Trust Each Other?
Trust is a great starting point. But “trust” doesn’t fix practical problems when real-life happens.
Most co-founder exits aren’t dramatic. They’re usually caused by:
- burnout or health issues
- family responsibilities changing
- a better job opportunity
- relocation overseas
- disagreement on direction (growth vs lifestyle business, pricing, hiring, product roadmap)
- uneven contribution over time (one founder carrying more of the workload)
Without an exit strategy, you can end up with a “shareholder problem” even if the person has stopped contributing. For example:
- They still hold shares and voting rights, so you need them to approve key decisions.
- They may be entitled to dividends (if the company pays them) despite not working in the business.
- They might disagree with fundraising terms, blocking investment.
- They might want to sell their shares to someone you don’t want involved.
These issues can become especially painful once the business has value - because at that point, emotions run high and the stakes are real.
Having a written plan in place also helps you show professionalism to investors, advisers, and future hires. It’s a signal that you’re building something that can scale, not something held together by informal promises.
What Happens If A Co-Founder Leaves Without An Exit Strategy?
If you don’t have a clear co-founder exit strategy, you’ll be relying on a combination of:
- the Companies Act 1993 defaults (which are not designed as a startup-friendly exit framework)
- whatever your constitution says (if you have one)
- general contract law principles
- negotiation power (which can be very uneven in a conflict)
In real terms, this can create a few common scenarios.
1) The “Zombie Co-Founder” Problem
This is when a co-founder stops contributing but remains a shareholder with rights.
They might not be doing anything wrong legally - but operationally, it can be a nightmare. You can be building the company day-to-day while another person still has influence over major decisions.
2) Disputes About The Value Of Shares
If someone exits and wants to sell, the first big question is usually: “What are the shares worth?”
Early-stage businesses often don’t have a clear market value. Without an agreed valuation mechanism, it’s easy for negotiations to stall, especially where one party feels they contributed more than the other.
3) Investor And Buyer Red Flags
Investors don’t just invest in your product - they invest in your governance. If a company has unclear ownership rules or founder disputes, fundraising can slow down or fall over entirely.
Similarly, if you ever want to sell the business, messy shareholder arrangements can complicate due diligence and completion. (It’s also why transaction documents and processes matter, including legal due diligence.)
4) IP And Confidentiality Risk
If your co-founder leaves and there’s no clear agreement around intellectual property (IP) ownership and confidentiality, you may not have the protections you assumed you had.
This can be particularly risky in digital businesses, where core value might be:
- code, software, product designs
- brand assets and content
- customer lists and marketing data
- processes, systems, and trade secrets
Even where the law provides some protection, it’s usually far cheaper and clearer to set expectations contractually upfront.
What Should A Practical Co-Founder Exit Strategy Include?
A good exit strategy should feel practical, not theoretical. It should cover the scenarios that actually happen in startups and small businesses.
Here are the key components we typically recommend you think through.
Founders’ Roles, Time Commitments, And Decision-Making
Before you can plan an exit, you need clarity on what “staying” looks like.
This can include:
- each founder’s role and responsibilities
- expected time commitment (full-time, part-time, evenings/weekends)
- authority levels (who can sign contracts, who manages staff, who controls finances)
- reserved matters (decisions requiring all founders or special majority approval)
This type of clarity often sits in a founders agreement or can be integrated into shareholder arrangements, depending on your structure and stage. If you’re still deciding how to formalise your setup, a Founders Agreement can be a helpful starting point.
Share Vesting (So Equity Matches Contribution)
Vesting is one of the most founder-friendly ways to handle exits, because it aligns share ownership with ongoing contribution over time.
Instead of issuing all shares outright with no strings attached, vesting typically means a founder earns shares gradually (for example over 3–4 years), often with a “cliff” period at the start.
Why does this matter? Because it helps prevent a situation where someone leaves early but keeps a large equity stake that they haven’t “earned” through long-term contribution.
Vesting terms are commonly set out in a Share Vesting Agreement, and should be carefully drafted to match your exact plan and cap table.
Good Leaver / Bad Leaver Rules
Not all exits are equal. An exit strategy often distinguishes between:
- Good leaver scenarios (e.g. illness, redundancy of role, mutual agreement, or another agreed reason)
- Bad leaver scenarios (e.g. serious misconduct, breach of duties, competing business, fraud, major breach of the agreement)
The practical effect is usually that a “bad leaver” may be required to sell their shares on less favourable terms (for example, at cost price or fair value with a discount), while a “good leaver” might receive fair value.
This needs to be handled carefully - you want it to be fair, workable, and enforceable.
Share Transfer Process (Who Gets First Dibs?)
Your exit strategy should clearly state who can buy the departing founder’s shares, and in what order. This is often done through:
- pre-emptive rights (existing shareholders get the first right to buy)
- company buy-back options (in some cases, the company may buy back shares if legally permitted and properly documented)
- restrictions on transfers to outsiders (to avoid an unknown third party becoming your new business partner)
This is one of the most important governance points for keeping control of your ownership structure as you grow.
How You’ll Value The Shares
Share valuation is where many founder exits get stuck.
Your agreement might set out valuation via:
- a formula (for example, a multiple of revenue or profit)
- an independent valuer (with a process for appointing them)
- the last funding round valuation (with adjustments)
- an agreed price mechanism (including timeframes to avoid delays)
There’s no one “right” method - what matters is that it’s clear enough to prevent arguments and flexible enough to suit your business model.
Confidentiality, IP Ownership, And Return Of Company Property
An exit strategy isn’t just about shares - it’s also about protecting what makes the business valuable.
Your documents should usually include:
- ongoing confidentiality obligations (especially around customer lists, strategy, pricing, and financials)
- confirmation of IP ownership (so the company owns what it should own)
- a requirement to return company property and access (devices, passwords, accounts)
If you collect or store customer data, it’s also smart to make sure your broader governance and documents align with the Privacy Act 2020 - including having a clear Privacy Policy and internal practices that control access to personal information.
Dispute Resolution (So Disagreements Don’t Destroy The Business)
Even with the best planning, disagreements happen.
A co-founder exit strategy should include a dispute resolution process that’s practical and staged - for example:
- good faith negotiation between founders
- mediation
- expert determination for valuation disputes
- arbitration or court as a last resort
This helps prevent the situation where a disagreement immediately escalates into something that drains cash, time, and focus.
Which Legal Documents Usually Contain A Co-Founder Exit Strategy?
Most co-founder exit strategies in New Zealand are documented using a combination of company and contract documents. The right mix depends on your structure (company vs partnership), your growth plans, and whether you expect investors.
Here are the most common documents where exit terms live.
Shareholders Agreement
This is usually the main document for co-founder exits in a company.
A well-drafted shareholders agreement can cover:
- share transfer rules
- leaver provisions
- drag-along/tag-along rights
- deadlock mechanisms
- reserved matters and voting thresholds
- confidentiality and restraint provisions (where appropriate)
If you have multiple shareholders (or plan to), having a Shareholders Agreement is one of the clearest ways to set expectations early and prevent disputes later.
Company Constitution
A constitution is a core governance document for a New Zealand company. It can work alongside a shareholders agreement and can include rules about share issues, transfers, and shareholder rights.
Not every company has a constitution, but many growth-focused startups choose to adopt one so that key rules are built into the company’s internal framework. This is especially useful where you want the company’s processes to be predictable and “investor-ready”.
It’s common for a Company Constitution to be part of the overall governance package, particularly where ownership will change over time.
Share Vesting Agreement (Or Vesting Clauses)
If vesting is part of your exit strategy, it needs to be properly documented. A handshake understanding won’t help much if there’s later disagreement over what was “earned”.
Vesting can be documented in a standalone agreement or incorporated into your shareholder documents, depending on how your cap table is set up and how clean you want the paperwork.
Employment Or Contractor Agreements (Where Founders Also Work In The Business)
In many early-stage businesses, founders wear two hats:
- they’re shareholders (owners), and
- they’re also workers in the business (employees or contractors)
Your co-founder exit strategy should consider both hats. For example, if a founder stops working day-to-day, you’ll want clarity on:
- notice periods
- return of company property
- confidentiality obligations
- IP created during the relationship
This is where a tailored Employment Contract (or a contractor agreement) can support your broader shareholder arrangements and reduce gaps.
Just keep in mind: employment law processes (and fairness obligations) still apply, even when the person is a founder, so it’s worth getting advice to structure it correctly.
Key Takeaways
- A co-founder exit strategy is the agreed plan for what happens if a founder leaves, including their shares, decision-making rights, confidentiality, and transition obligations.
- You need an exit strategy even when you trust your co-founder, because most exits happen due to life changes, misaligned expectations, or uneven contribution over time.
- Without clear exit terms, you risk deadlocks, disputes over valuation, investor red flags, and long-term “zombie co-founder” issues that can stall your business.
- A practical exit strategy often includes vesting, good leaver/bad leaver rules, share transfer restrictions, a valuation mechanism, IP and confidentiality protections, and dispute resolution steps.
- These terms are usually documented in a Shareholders Agreement and can be supported by a Company Constitution, Share Vesting Agreement, and (where relevant) employment or contractor agreements.
- It’s almost always worth getting tailored legal help rather than relying on templates, because founder exits are high-stakes and your documents need to match your exact ownership structure and goals.
If you’d like help putting a co-founder exit strategy in place (or reviewing what you already have), you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.
