What Are Alphabet Shares?

Alphabet shares are separate classes of ordinary shares in a company, each designated by a letter. You might have A shares, B shares, C shares, and so on. They all represent ownership in the same company, but each class carries different rights.

The most common difference is dividend rights. Class A shares might get £10 per share in dividends, while Class B shares get £5. Or Class A gets nothing in a particular year while Class B gets the full distribution. That flexibility is the entire point.

For agency founders, alphabet shares solve a specific problem. You want to reward a key senior team member or bring in a silent investor, but you don't want to give them the same dividend entitlement as the founder who built the business from scratch. Alphabet shares let you do that without creating a separate legal entity.

As ICAEW qualified accountants who work exclusively with agency founders, we see alphabet shares used most often in three scenarios: retaining talent, bringing in investment, and preparing for an exit. Each has different considerations.

How Alphabet Shares Work in Practice

Every limited company has a share structure set out in its articles of association. A standard agency starts with one class of ordinary shares, typically 100 shares held by the founder. All shares carry the same rights to dividends, voting, and capital on a winding up.

With alphabet shares, you create additional classes. The company's articles need to permit multiple classes, or you amend them. Each class is defined by a shareholders' agreement or a board resolution that sets out the specific rights attached to that class.

A typical structure for a growing agency might look like this:

  • A shares: Held by the founder. Full dividend rights, full voting rights, full capital entitlement on sale.
  • B shares: Held by the operations director. Dividend rights capped at a fixed amount per share, no voting rights, capital entitlement on sale only if certain performance targets are met.
  • C shares: Held by an external investor. Fixed preferential dividend, no voting rights, priority return of capital on a sale before A and B shareholders receive anything.

The dividend flexibility is the main practical benefit. In a profitable year, you might declare a dividend of £50,000 on the A shares and £10,000 on the B shares. In a lean year, you might pay nothing on the B shares and take the full distribution on the A shares. You decide at the point of declaring each dividend, based on the rights written into each class.

Why Agency Founders Use Alphabet Shares

There are three common reasons we see agency founders adopt alphabet shares. Each reflects a different stage of the business.

1. Retaining and Rewarding Key Staff

Your senior team is the difference between a sellable agency and a business that dies when you leave. But giving them ordinary shares in the agency comes with problems. They get the same dividend rights as you. They become shareholders with statutory rights, including the right to see company accounts and challenge board decisions. And if they leave, you have to buy the shares back, which creates a tax event and a cash flow problem.

Alphabet shares solve this. You issue a separate class of shares to the senior team member, with dividend rights that reflect their contribution rather than yours. You typically restrict voting rights so they don't have a say in strategic decisions. And you include a compulsory transfer provision in the shareholders' agreement, meaning they must sell the shares back to the company at a pre-agreed price if they leave.

For example, a 12-person digital agency billing £800k per year might issue B shares to the head of delivery. The B shares carry the right to dividends equal to 10% of the company's post-tax profits, but no voting rights and no entitlement to the sale proceeds unless the agency sells for over £2m. The head of delivery gets a direct financial stake in the agency's success without the founder losing control.

2. Bringing in Investment Without Losing Control

If you take on an external investor, they will want a return. But they don't need the same rights as you. Alphabet shares let you structure the investment so the investor gets a preferential dividend, or priority return of capital on a sale, while you retain control of day-to-day decisions.

An investor taking a minority stake in a 20-person creative agency billing £1.4m might take C shares. Those shares carry a fixed 8% preferential dividend, paid before any dividend on the A or B shares. On a sale, the C shares get their original investment back first, then participate in the remaining proceeds at a reduced rate. The investor gets protection. The founder keeps control.

3. Preparing for an Exit

This is where alphabet shares become most powerful. When you sell your agency, the tax treatment of the sale proceeds depends on the type of shares you hold. Business Asset Disposal Relief (BADR) gives you a 14% capital gains tax rate on qualifying disposals, up to a £1m lifetime limit. But BADR only applies to shares that meet specific conditions, including a minimum 5% shareholding and a two-year holding period.

Alphabet shares let you structure ownership so the founder holds shares that qualify for BADR, while other shareholders hold shares that don't need to qualify. You can also use alphabet shares to create a "growth shares" structure, where a new class of shares captures the value created after a specific date, potentially reducing the tax bill on the founder's existing shares.

For a detailed look at how share structures affect your exit options, see our growth and exit planning content.

Tax Implications of Alphabet Shares

Alphabet shares are not a tax avoidance scheme. They are a legitimate structuring tool. But the tax treatment matters, and getting it wrong can be expensive.

Dividend Tax

Each shareholder pays tax on dividends they receive, based on their personal income tax band. The dividend tax rates for 2025/26 are 8.75% for basic rate taxpayers, 33.75% for higher rate, and 39.35% for additional rate. The annual dividend allowance is £500.

Because alphabet shares let you direct dividends to specific shareholders, you can manage the overall tax bill. If the founder is already in the higher rate band and a senior team member has unused basic rate band, you can pay a larger dividend on the team member's shares and a smaller one on the founder's shares. The total dividend paid is the same, but the tax bill is lower.

HMRC watches this area. If the dividend allocation is not supported by the share rights, or if the share classes have no commercial substance, HMRC can challenge the arrangement under the settlements legislation. The key is that the dividend must be declared in accordance with the rights attached to each class, and those rights must have genuine commercial purpose.

Corporation Tax

Dividends are paid from post-tax profits. The company pays corporation tax on its profits at 19% (small profits rate, profits up to £50k) or 25% (main rate, profits above £250k), with marginal relief between £50k and £250k. Then the remaining profits are distributed as dividends. Alphabet shares do not change the corporation tax calculation.

Capital Gains Tax on Exit

When you sell your agency, the capital gains tax treatment depends on the share class you hold. BADR applies at 14% on the first £1m of lifetime gains, with the remainder taxed at 20% (or 24% for residential property). To qualify for BADR on a share disposal, you must hold at least 5% of the company's ordinary share capital and voting rights, and be an officer or employee of the company, for at least two years before the disposal.

If you have alphabet shares, each class is assessed separately. Holding 5% of the A shares does not automatically give you BADR on the B shares. The structure needs to be designed with BADR qualification in mind. This is where specialist advice is essential.

Setting Up Alphabet Shares: The Practical Steps

If you decide alphabet shares are right for your agency, the process involves several steps. Do not attempt this without professional advice. A poorly drafted share structure can create tax problems, legal disputes, and issues with HMRC.

Step 1: Review your articles of association. Your company's articles must permit multiple classes of shares. Standard model articles often do. If yours do not, you need to pass a special resolution to amend them.

Step 2: Draft a shareholders' agreement. This is the document that sets out the rights attached to each class. It covers dividend rights, voting rights, transfer restrictions, drag-along and tag-along rights, and what happens on a sale or winding up. Do not rely on board minutes alone. A shareholders' agreement is enforceable. Board minutes are not always.

Step 3: Pass a board resolution. The board must authorise the creation of the new share class and the issue of shares to the relevant individuals. The resolution should reference the shareholders' agreement and confirm that the shares are issued at market value (or explain the valuation if they are issued at par).

Step 4: Issue the shares. File a return of allotment with Companies House (form SH01). Update the company's register of members. Issue share certificates to the new shareholders.

Step 5: Value the shares. If you issue shares to an employee or director at less than market value, there may be an income tax charge on the discount. A formal valuation from a qualified accountant or tax adviser is often necessary, particularly if the agency has significant retained profits or goodwill.

Step 6: Notify HMRC. If the shares are issued to an employee or director, you may need to report the issue under the employment-related securities rules. This is a complex area. Take advice.

When Alphabet Shares Are Not the Right Answer

Alphabet shares are not for every agency. If you are a sole founder with no plans to bring in other shareholders, you do not need them. If you are planning to give equity to a co-founder who will share control equally, ordinary shares are simpler and more appropriate.

Alphabet shares also add complexity. You need a shareholders' agreement. You need to maintain separate registers for each class. You need to declare dividends separately for each class. And if the structure is not properly documented, you create disputes rather than solving them.

For smaller agencies, an EMI (Enterprise Management Incentives) share option scheme is often a better way to reward key staff. EMI options give employees the right to buy shares at a future date, with favourable tax treatment. They are simpler than alphabet shares for most situations. If you are considering equity for staff, speak to your accountant about whether EMI or alphabet shares better suits your situation.

Real Example: A 15-Person PR Agency

Here is a real scenario we worked through recently. A PR agency in Manchester's Northern Quarter, 15 people, billing £1.2m per year. The founder held 100% of the ordinary shares. She wanted to bring in two senior team members as shareholders, but she wanted to retain control and ensure they only benefited from dividends if the agency hit profit targets.

We structured it as follows:

  • A shares: 80% of the equity, held by the founder. Full dividend rights, full voting rights, full capital entitlement on sale.
  • B shares: 10% each, held by the two senior team members. Dividend rights triggered only if post-tax profits exceeded £150k. No voting rights. Compulsory transfer on leaving, priced at a formula linked to average profits over the preceding two years.

The result was that the founder kept control, the senior team had a direct financial incentive to grow profitability, and the structure was clean enough that HMRC would not challenge the dividend allocation. The agency is now on track for a sale in 2026, and the alphabet share structure will simplify the exit process.

What to Ask Your Accountant

If you are considering alphabet shares for your agency, here are the specific questions to put to your accountant before you proceed:

  • Does my current articles of association permit multiple share classes?
  • What valuation basis should I use for issuing the new shares?
  • Will the proposed structure qualify for BADR on my existing shares?
  • Is there an income tax charge on the issue of shares to employees?
  • Should I use an EMI scheme instead of alphabet shares?
  • What happens to the shares if a shareholder leaves or dies?

Your accountant should be able to answer these questions directly, or bring in a tax specialist where needed. If they cannot, that is a red flag. Alphabet shares are a specialist area, and getting them wrong is expensive.

Our ICAEW qualified team works with agency founders on share structures every week. If you are thinking about alphabet shares, get in touch. We will tell you whether it makes sense for your specific situation, or whether a simpler structure would achieve the same result.