A director of a growing UK limited company often reaches the same uncomfortable point. The business has built real value, a senior employee needs a reason to stay, or a family successor is ready to become involved, but issuing ordinary shares would hand over part of the value created before that person arrived.
That's the problem growth shares are designed to solve. They can give someone an interest in future growth above an agreed hurdle, while protecting the value already attributable to existing shareholders. The tax result, however, depends heavily on valuation, the company's articles, employment-related securities reporting and the paperwork completed when the shares are issued.
Why Directors Ask About Growth Shares in the First Place
Suppose you own a profitable trading company. A senior employee has become central to the business, and you want to reward them with equity. The difficulty is that ordinary shares usually carry an interest in the company's overall value, including the value you and other shareholders have already created.
Giving those shares away isn't economically neutral. The shares may already have market value, so issuing them cheaply can create an employment-related securities tax issue for the recipient. It can also dilute the founders' economic position immediately, even though the employee may be joining mainly to help create the next stage of growth.
The same tension appears in family businesses. A parent may want to bring a child into the company before a future sale or succession, while preserving the value built during the founder's ownership. Transferring ordinary shares may give the next generation an interest in today's business, not merely in the value they help create.
Practical rule: Don't start with the percentage of shares you want to give away. Start by deciding which value belongs to existing owners and which future value should be shared.
Growth shares address that distinction by using a separate class of shares with a hurdle value. The holder generally participates only in value created above that threshold. Existing shareholders retain the baseline value at the time of issue, while the recipient gets exposure to later upside.
That sounds straightforward. The difficult questions are practical:
- Was the hurdle supported by a defensible valuation at grant?
- Do the articles clearly define the rights?
- Has the recipient made the appropriate section 431 election?
- Has the award been reported to HMRC on time?
- Will the eventual disposal be taxed as a capital gain or employment income?
- Would EMI or CSOP achieve the same commercial result with less complexity?
The answers matter more than the label attached to the shares.
What Growth Shares Actually Are
The simplest way to understand growth shares is to think about a house. Existing shareholders own the value of the house as it stands today. Growth shareholders are given an interest in the loft conversion that may be built tomorrow, but not in the original structure.
A growth share is usually a separate share class created under the company's articles. The rights are drafted so that the shares have little or no economic entitlement until the company's value rises above a pre-agreed threshold, known as the hurdle. Once the hurdle is exceeded, the growth shares participate according to the rights set out in the articles.
The hurdle separates old value from new value
Assume a company is valued at £1.2 million when the shares are issued. The articles might set the hurdle at £1.2 million, or at another carefully supported value. If the company later sells for more than that amount, the growth class can participate in the excess, subject to its rights and any vesting or leaver conditions.
The hurdle isn't a casual figure chosen to make the shares look inexpensive. It's central to both the commercial bargain and the tax analysis. HMRC guidance on growth shares notes that HMRC doesn't provide a formal advance valuation for these arrangements, so the company needs defensible valuation evidence and should retain its supporting records.
Ordinary shares work differently. Each share normally carries a pro rata claim over the company's total value, subject to the rights attached to that class. If you issue ordinary shares to an employee, the employee may benefit from value that already existed before their involvement.
Growth shares can therefore protect existing value more precisely, but they need carefully drafted rights. The company's articles should cover the hurdle, distributions, voting rights, conversion, transfer restrictions and what happens on a sale or winding-up.
Growth shares aren't EMI options
An EMI option is a contractual right to acquire shares later at an exercise price. Growth shares are issued shares, usually with their own class rights and hurdle. That difference affects ownership, voting, administration, leaver treatment and tax timing.
EMI can be attractive where the company and employee qualify, because it's a tax-advantaged option regime. Directors considering that route can review the practical conditions in this guide to the EMI share options scheme. Growth shares are more flexible in some situations, but that flexibility comes with valuation and drafting work.
The phrase growth market shares causes a separate confusion. HMRC's growth market rules concern stamp duty and stamp duty reserve tax exemptions for securities admitted to a recognised growth market. They aren't the rules that create private-company employee growth shares. The two concepts use similar language but deal with different legal and tax questions.
A major historical change to the recognised growth market stamp duty rules occurred on 28 April 2014, when the SDRT exemption for securities admitted to trading on a recognised growth market took effect. From 1 January 2024, an FCA-regulated multilateral trading facility can qualify if the relevant conditions are met, including the required growth test. That regime doesn't determine whether an employee's private-company growth shares have been correctly designed.
How Growth Shares Work in Practice
The mechanics start with the hurdle, but the hurdle isn't the only term that needs attention. The company must decide how the shares vest, what performance is expected and what happens if the holder leaves.
A common structure sets the hurdle at a value the existing shareholders can justify at issue. The shares may then vest over an agreed period, with the articles or related documents applying time-based conditions. The company might also attach performance conditions linked to revenue, profitability or another measurable business objective.
Leaver provisions are equally important. Good leaver rules may allow a departing employee to retain some vested interest, while bad leaver rules may provide for forfeiture or a compulsory transfer. These provisions must work alongside the articles and shareholders' agreement. A vague promise that shares will be “taken back” on departure isn't enough.
A worked cap table example
Take a hypothetical company valued at £1.2 million before the growth shares are issued. It issues 100 growth shares with a £1.2 million hurdle. The existing ordinary shareholders retain the value below the hurdle, while the growth class participates in value above it.
If the company later sells for £2 million, the value above the hurdle is £800,000. Assuming the growth shares participate fully in that excess and there are no other adjustments, the growth shareholders have £800,000 to split pro rata between them.
| Shareholder | Shares | Value at £2m exit |
|---|---|---|
| Existing ordinary shareholders | Existing ordinary shares | £1.2m baseline value |
| Growth shareholders | 100 growth shares | £800,000 growth value |
| Total | Existing shares plus 100 growth shares | £2m |
The table shows the commercial effect, not a complete tax computation. The actual result could change because of different share rights, transaction costs, debt, preference shares, performance conditions, vesting, leaver provisions or an exit waterfall.
Articles and valuation do the heavy lifting
The hurdle must appear in enforceable legal documentation, normally through the company's articles and related shareholder documents. The wording should explain how value is calculated, how the shares rank on a sale, and how the rights operate if the company issues further shares or undertakes a reorganisation.
The valuation should be contemporaneous with the grant. A later valuation prepared only after an HMRC enquiry is much less persuasive than a reasoned report produced when the shares were issued. The evidence should explain the company's financial position, prospects, capital structure, restrictions and the specific rights attached to the growth class.
Issuing the shares doesn't usually require existing shareholders to pay cash. The economic cost appears through dilution on the cap table and the sharing of future exit value. That makes the arrangement attractive commercially, but it also means existing shareholders need to understand precisely what they're giving up. A review of the holding company structure may also be relevant where the wider ownership and exit plan involves more than one company.
UK Tax Treatment at Grant and Exit
Growth shares have three important tax checkpoints: acquisition, any later exercise if the arrangement involves options, and disposal. The tax result isn't determined by calling the shares “growth shares”. HMRC will look at the rights, the value at acquisition, the employment relationship and the supporting elections and reports.
At acquisition, the key question is whether the employee or director receives shares for less than their unrestricted market value. If there's a discount, the difference can create an employment income charge. Depending on the facts, employee National Insurance contributions may also arise. If the shares are readily convertible assets, employer NIC and Apprenticeship Levy exposure may need to be considered too, as explained in UK guidance on growth share tax treatment.
The section 431 election
A joint section 431 election is normally signed by the employer and employee or director within 14 days of issue. Its purpose is to deal with restrictions on the shares and help ensure that future growth is treated within the capital gains tax framework rather than being taxed as employment income because of those restrictions. The election doesn't turn an undervalued issue into a tax-free event. It needs to be considered alongside the actual market value and the price paid.
If the recipient acquires the shares at full market value, or elects to pay tax upfront on a discount, later growth is generally expected to fall within capital gains tax treatment rather than employment income treatment, subject to the facts. HMRC's employment-related securities guidance also highlights the importance of a defensible valuation and timely reporting.
The company must report employment-related securities by 6 July after the end of the tax year in which the award was made. That reporting obligation applies even where the shares were low-value or nil-valued.
Tax at a future sale
On disposal, the gain is calculated by reference to the relevant acquisition value and disposal proceeds. The gain may be subject to capital gains tax, but the rate and relief position depend on the individual's circumstances and the conditions in force at the time.
Business asset disposal relief may be relevant for qualifying executives who hold at least 5% and meet the required qualifying period and other conditions. The share rights and the holder's employment status need careful review, particularly where growth shares have limited voting or economic rights. A general overview of capital gains on shares can help frame the disposal calculation, but it won't replace a review of the specific articles and award documents.
| Event | No Section 431 Election | With Section 431 Election |
|---|---|---|
| Acquisition | Restrictions and any discount may create employment income exposure. | Restrictions are dealt with upfront, but any discount still needs to be valued and considered. |
| Later option exercise | Any increase in value may create employment income and NIC exposure, depending on the arrangement. | The election may help separate restricted-share issues from later capital growth, subject to the facts. |
| Disposal | Later gains may be capital gains, but the earlier employment tax position may affect the base cost. | Future growth is more clearly positioned for capital gains treatment, subject to the valuation and documentation. |
There are also practical payroll questions. Where an option arrangement produces a taxable gain and the employer cannot collect the relevant NIC through payroll in the usual way, a PAYE settlement agreement may sometimes be considered for certain liabilities. That isn't an automatic solution, and the company should establish the reporting and payment position before issuing or exercising the award.
When Growth Shares Make Strategic Sense
Growth shares work best where the company can identify a meaningful future value opportunity but doesn't want to transfer the value already built. Three situations commonly justify the complexity.
A senior employee may be essential to expansion, a product launch or a planned sale. Growth shares can give that person upside tied to the next phase, rather than rewarding them for value created before they joined.
Family succession is another use. A founder can introduce the next generation while preserving the founder's existing economic position. The arrangement can be combined with vesting, performance and leaver provisions so that ownership develops alongside genuine involvement in the business. Directors considering that route can also review succession planning for family businesses before committing to a share issue.
A business approaching a sale or flotation may use growth shares to retain key people when the eventual value is uncertain. The structure can align the recipient with a successful outcome, although issuing too late may mean the recipient is being given value that has already been created.
Choosing between the main structures
| Situation | Growth shares | EMI | CSOP |
|---|---|---|---|
| Company qualifies for a tax-advantaged option scheme | May be unnecessary if an option delivers the same result more simply. | Often worth testing first because it can offer a structured tax-advantaged route. | May suit a company or award that doesn't fit EMI but meets CSOP conditions. |
| Existing value must be protected | Strong fit because the hurdle can separate current value from future growth. | Can also protect current value through the exercise price. | Can provide a similar incentive through an option structure. |
| Recipient isn't a common-law employee | May offer more flexibility, subject to the legal and tax facts. | Eligibility can be restrictive. | Eligibility and scheme conditions still need checking. |
| Company wants issued shares now | Appropriate where immediate ownership and share rights are intended. | Not the natural structure because the recipient receives an option first. | Also an option rather than an issued growth share class. |
| Administration tolerance | Higher drafting and valuation burden. | Formal compliance and eligibility work, but potentially simpler economics. | Formal scheme administration and eligibility checks remain necessary. |
Growth shares aren't automatically superior. They fill a gap where EMI is unavailable, where the recipient's status complicates an option scheme, or where the founders want a carefully defined future-value class. If the company qualifies for EMI and the commercial objective is to give an employee an opportunity to buy shares later, EMI may be the cleaner answer.
Risks and Common Mistakes to Avoid
The most expensive mistake is treating growth shares as a template exercise. A hurdle copied from another company may not reflect the company's actual value, capital structure or transaction prospects. HMRC may challenge the valuation later, and a discount can be recharacterised as employment income rather than delivering the intended capital treatment.
The readily convertible asset issue can also be missed. If the shares or option rights can be converted into cash in the relevant circumstances, the employer may face NIC and Apprenticeship Levy exposure. That liability can change the economics for the company even where the recipient expected to deal only with their own tax.
Leaver provisions create another fault line. If the documents don't clearly distinguish vested and unvested interests, or don't connect the articles to the shareholders' agreement, a former employee may retain shares on terms the founders never intended. A compulsory transfer mechanism must be legally workable, not merely commercially understood.
Red flags before issue
- Unsupported valuation: There's no contemporaneous report explaining the hurdle and the value of the specific share rights.
- Weak articles drafting: The hurdle, exit ranking, voting rights and forfeiture provisions aren't clearly written into the company's constitutional documents.
- Misaligned documents: The articles, shareholders' agreement, award letter and employment contract use different definitions of leaver status or value.
- Late issue: The company has already experienced substantial growth, so the proposed hurdle may fail to separate existing value from future value.
- Missing election: The parties haven't considered the section 431 election within the required period.
- Unreported securities: The company hasn't diarised employment-related securities reporting by 6 July after the end of the relevant tax year.
- Unpriced dilution: Existing shareholders haven't modelled how the growth class affects sale proceeds, dividends or future fundraising.
A low issue price isn't the same as a low tax risk. The more attractive the shares look at grant, the more important the valuation evidence becomes.
The cost of getting the structure wrong usually outweighs the saving directors hoped to achieve. A defective award can create unexpected tax, NIC, legal disputes and shareholder resentment at the same time.
Deciding Whether Growth Shares Fit Your Business
Start with the commercial reason. If the company doesn't have a credible path to future value creation, a growth share class may offer complexity without a meaningful incentive. A bonus, ordinary option or simpler retention arrangement could be more suitable.
Next, test the valuation. Can the company explain why the hurdle reflects current value? Would an independent adviser reach a similar conclusion after reviewing the accounts, forecasts, debt, preferences and transaction prospects? If the answer is uncertain, don't issue first and try to justify the number later.
Then compare cost with benefit. Legal drafting, valuation work, reporting and ongoing administration need to be proportionate to the equity being offered and the retention problem being solved. The company should model several exit outcomes, including a disappointing sale, a successful sale and no sale at all.
The advisers to involve
A tax adviser should review the valuation, employment-related securities reporting, section 431 election wording and the interaction with income tax, NIC and capital gains tax. EMI eligibility should be checked before choosing growth shares because they appear flexible.
A corporate lawyer should review the articles, shareholders' agreement, share rights, transfer restrictions and good leaver and bad leaver provisions. The documents need to work together on the day of issue and at the eventual exit.
Before proceeding, ask:
- Is the recipient an employee, director or family successor?
- Is the expected exit more than three years away?
- Would EMI, CSOP, an option grant or a bonus achieve the same retention outcome at lower cost?
If the answers support a future-growth incentive and the valuation can be defended, growth shares may be appropriate. If not, defer the issue or choose a simpler structure rather than creating a tax problem the company could have avoided.
Tax Compass provides practical decision-support content for limited company directors considering share incentives, valuations and capital gains planning. Visit Tax Compass to understand the relevant options and identify when specialist tax or legal advice is needed before shares are issued.