How Growth Shares Work in the UK

If you’re looking to reward key people and drive performance without handing over control, growth shares can be a smart, flexible way to do it.

They let you give employees, advisors or future investors a stake in the growth of your company’s value without diluting the value you’ve already built.

In this guide, we explain what growth shares are, how they work in the UK, when they make sense for a small business, the legal and tax steps to get right, and the documents you’ll need to put a growth share scheme in place confidently.

What Are Growth Shares?

Growth shares are a class of shares designed so the holder only benefits from the increase in the company’s value above a predefined threshold (often called a “hurdle” or “valuation hurdle”).

Unlike ordinary shares, growth shares typically:

• Carry limited or no rights to the existing value of the company on day one (so they don’t participate in value below the hurdle).
• Participate in future value created above the hurdle, aligning rewards with performance and growth.
• Often come with restricted voting and dividend rights (this is flexible and set in your company’s documents).

In plain English: if your company is currently worth £1m, you can issue growth shares with a £1m hurdle. The holders will only share in exits or distributions that relate to value above £1m. The value you’ve already built remains with your existing ordinary shareholders.

This is why many UK startups and SMEs use a growth share scheme to incentivise senior hires and advisors while protecting founder equity and control.

How Do Growth Shares Work? (With A Simple Example)

Let’s say your company has an agreed value today of £1,000,000. You create a new class of “G” shares with a hurdle of £1,000,000. You then issue growth shares to a key hire who’ll help scale the business.

Two years later, the business sells for £3,000,000. Here’s a simplified view of how value flows:

• The first £1,000,000 goes to the existing ordinary shareholders (they retain the company’s pre-issue value).
• The remaining £2,000,000 (the “growth”) is shared among ordinary shares and G shares, based on the rights you set in your articles and investment terms.

Because growth shares are designed to participate in future value rather than historic value, the up-front value of a growth share is typically lower than an ordinary share. That can help with tax efficiency for the recipient, but you still need proper valuations and tax advice to get this right.

Variations you might see in the UK include:

• Hurdle growth shares: participation only above a fixed hurdle.
• Flowering shares: limited rights initially that “flower” into fuller rights once performance or valuation conditions are met.
• Performance-linked growth shares: vesting or participation depends on KPIs (revenue, EBIT, product milestones).

When Should You Use A Growth Share Scheme?

Growth shares can be useful when you want to align incentives with long‑term company value without handing over a chunk of your current equity. Common scenarios include:

• Hiring a senior leader who will materially grow the business.
• Retaining key staff where cash bonuses aren’t practical.
• Rewarding advisors or contractors tied to specific growth outcomes.
• Bringing in new money while preserving founders’ pre‑existing value.

If you’re comparing alternatives, consider whether EMI options might be a better fit. EMI share options are tax‑advantaged for qualifying companies and employees, while growth shares involve issuing actual shares at the outset. Some businesses even use both: EMI options for broader staff and growth shares for a small leadership group.

It’s also worth thinking about vesting and dilution. If your plan is to reward people over time, building in a vesting schedule can be more effective than issuing fully‑vested shares on day one. You can read more about how vesting works in practice in our guide to vesting periods.

Legal And Tax Considerations In The UK

Growth shares are flexible, but they must be implemented carefully to be effective and compliant. In the UK, keep the following in mind.

Company Law: Create The Rights Properly

Under the Companies Act 2006, share classes and their rights need to be set out clearly in your company’s constitution (usually your articles). If your current articles don’t allow for growth shares, you’ll need to adopt new Articles of Association that define the hurdle, participation, dividend and voting rights, and how these shares rank on a sale or winding up.

You may also need ordinary or special resolutions to approve the new class and allotment, plus Companies House filings.

Tax: Employment-Related Securities (ERS)

Where growth shares are issued to employees or directors, they are usually treated as employment‑related securities for tax purposes. Key points to consider (seek specialist tax advice for your specific case):

• Valuation: you’ll need a robust, supportable valuation for both the company and the growth shares to evidence the hurdle and any up-front value.
• Income tax/NICs: if the shares are acquired for less than their unrestricted market value (UMV), there can be an income tax charge. A joint “Section 431” election can sometimes help to avoid future income tax on growth in value, but this depends on the facts, restrictions and valuation.
• HMRC ERS reporting: most employee share acquisitions must be reported to HMRC via the ERS online service. You’ll typically need to register the arrangement and file an annual return by 6 July following the end of the tax year.

Because the whole point of growth shares is to capture future upside, the way you structure restrictions, vesting, forfeiture and buy-back rights can have significant tax consequences. Get early input on valuation, s.431 elections and ERS reporting so you don’t run into avoidable tax issues later.

Vesting, Leavers And Buy-Backs

Vesting schedules, leaver provisions and buy-back rights are standard in UK growth share schemes. Typical features include:

• Time-based vesting (e.g. 4 years with a 1‑year cliff) and/or performance‑based vesting tied to measurable goals.
• Good leaver vs bad leaver rules (e.g. keeping vested shares or selling at fair value vs nominal value).
• Company or founder buy-back rights to maintain cap table hygiene if someone leaves.

You’ll want these terms captured clearly in your constitution and a well‑drafted Shareholders Agreement, so everyone understands what happens if things don’t go to plan.

Dilution And Cap Table Planning

Even though growth shares protect pre‑existing value, they still increase the number of shares on issue and can dilute future upside. Before you create a new class, model what happens on different exit values and future funding rounds. Our guide on share dilution explains the trade‑offs and strategies to manage them.

Commercial Clarity

Finally, align the scheme with your business goals. Ask:

• What behaviours do we want to incentivise?
• What would success look like in 12–24 months?
• How will we measure performance against the hurdle or KPIs?

Clarity on the “why” makes it easier to design terms that feel fair and motivating.

Documents You’ll Need And How To Implement

Setting up growth shares is a project with several moving parts. Here’s the typical documentation and process you’ll work through.

Core Documents

• Updated Articles: bespoke growth share rights, hurdle mechanics, dividend and voting rules, and ranking on exit or liquidation. Start with your Articles of Association and tailor them to the scheme.
• Shareholders Agreement: governance, transfers, leaver provisions, drag/tag, pre‑emption, information rights and dispute resolution. A strong Shareholders Agreement ensures everyone understands the rules.
• Growth Share Subscription/Allotment Documents: offer letters, subscription agreements, board and shareholder resolutions, Companies House filings and updated registers.
• Vesting Schedule: either embedded in the subscription terms or documented via a separate Share Vesting Agreement so milestones and cliffs are crystal clear.
• Valuation Letter/Report: support for the company value and the value of the growth shares at the time of issue. For practical guidance on methods and pitfalls, see how to value your shares.
• Tax Forms & Elections: employee communications, s.431 election paperwork (where appropriate), and ERS registration/annual return process.

Implementation Steps

1. Design The Scheme: set your commercial goals, choose the hurdle, decide on voting/dividend rights, and define vesting and leaver terms.
2. Model Scenarios: test different exit values and funding rounds so you understand outcomes for ordinary vs growth shareholders.
3. Update Constitution: amend and adopt updated articles to create the new growth share class and rights.
4. Approve & Allot: pass board and (if needed) shareholder resolutions; issue offers; agree subscription terms; file Companies House forms and update statutory registers.
5. Valuation & Tax Steps: obtain a supportable valuation; prepare and (if relevant) sign s.431 elections within the required timeframe; register and report under HMRC’s ERS portal.
6. Communicate Clearly: provide plain‑English summaries to recipients so they understand how the growth share scheme works, when shares vest, and what happens if they leave.

If you’re comparing alternatives or planning a broader incentive pool, it can be worth running a parallel track on EMI options for team members who may not need bespoke growth share terms.

Optional But Helpful

• Board Templates: having a standard pack of board and shareholder resolutions helps you keep records tidy and consistent.
• Education Pack: a short FAQ and example scenarios often reduce confusion and follow‑up queries from recipients.
• Future Funding Protections: ensure pre‑emption, drag/tag and anti‑dilution concepts are covered in your shareholder documents so future rounds run smoothly.

Key Takeaways

• Growth shares give recipients a stake in future value above a hurdle, protecting pre‑existing equity while aligning incentives with performance.
• They’re flexible: you can tailor voting, dividends, vesting and leaver rules in your Articles of Association and your Shareholders Agreement.
• UK tax and ERS reporting matter. Get a robust valuation, consider s.431 elections where appropriate, and meet HMRC deadlines to avoid unexpected charges.
• Model dilution and exit outcomes in advance so you know how ordinary and growth shareholders share value at different valuations. Our guide to share dilution is a useful primer.
• Put the right documents in place from day one, including a clear Share Vesting Agreement if awards vest over time, and keep statutory filings up to date.
• If you’re unsure whether growth shares or tax‑advantaged options are best, consider a hybrid approach and explore EMI options alongside growth shares.

If you’d like help designing and implementing UK growth shares for your small business, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no‑obligations chat.