Investors' Relief for External Investors

If you hold shares in an unlisted trading company as an external investor, you may qualify for Investors' Relief when you sell them. This relief reduces the Capital Gains Tax rate to 10% on qualifying gains (instead of the standard 20% rate for higher and additional rate taxpayers), provided you've held the shares for at least three years and meet several specific conditions.

What is Investors' Relief?

Investors' Relief is a form of Capital Gains Tax relief designed to encourage external investment in unlisted trading companies. When you dispose of qualifying shares, you pay Capital Gains Tax at just 10% rather than 20%, which can mean substantial savings on gains from successful investments.

The relief applies per individual and has a lifetime limit of £10 million of qualifying gains. This is separate from the lifetime limit for Business Asset Disposal Relief (formerly known as Entrepreneurs' Relief).

Who qualifies as an external investor?

To qualify for Investors' Relief, you must be an external investor, not someone involved in running the company. This means:

• You must not be an employee of the company (or any group company) at any time during the period you hold the shares
• You must not be an officer of the company, such as a director
• The shares cannot have been acquired through an employee share scheme

This restriction is deliberate – the relief targets those who invest money into companies without taking an active management role. If you're a founder, director, or employee, you may instead qualify for Business Asset Disposal Relief, which has different rules.

Requirements for the company

The company whose shares you hold must meet strict criteria:

• It must be an unlisted trading company or the unlisted holding company of a trading group
• It must be a trading company (carrying on commercial trade) throughout the period you hold the shares
• The company must have been unlisted when you acquired the shares and remain unlisted until disposal

"Unlisted" means the shares are not listed on a recognised stock exchange. Companies on the Alternative Investment Market (AIM) count as unlisted for this purpose.

Share subscription requirements

You must have subscribed for new ordinary shares – that is, you acquired them directly from the company as a fresh issue of shares, not purchased them from another shareholder. The company must have used the money you invested for its trade.

The shares must have been issued on or after 17 March 2016. Investors' Relief does not apply to shares issued before this date.

Holding period

You must have held the shares for at least three years before you dispose of them. The three-year period runs from the date the shares were issued to you until the date of disposal.

There's no minimum holding period before disposal if you're disposing of the shares because the company has been liquidated, dissolved, or put into administration or receivership – but all other conditions must still be met.

What counts as a disposal?

A disposal includes:

• Selling the shares
• Gifting the shares
• Transferring the shares as part of an exchange or reorganisation (though relief may be deferred in some reorganisations)
• The company being wound up or dissolved

When you dispose of the shares, you calculate your gain in the normal way, deducting the amount you paid for the shares and any allowable costs from the disposal proceeds.

Claiming the relief

You must claim Investors' Relief when you complete your Self Assessment tax return for the tax year in which you disposed of the shares. The relief is not automatic – if you don't claim it, you'll pay Capital Gains Tax at the standard rates.

On your tax return, you'll need to provide details of:

• The company whose shares you're disposing of
• The date you acquired and disposed of the shares
• The gain you're claiming relief on

Keep records of your share subscription agreement, proof of payment, and any documentation showing the company's trading status and unlisted nature.

The £10 million lifetime limit

Investors' Relief has a lifetime limit of £10 million of gains per individual. Once you've claimed relief on £10 million of qualifying gains across your lifetime, you cannot claim any further relief.

If you dispose of shares that would create a gain exceeding your remaining lifetime allowance, you can claim relief on the portion that falls within the limit. The excess gain is taxed at the standard Capital Gains Tax rates.

Interaction with other reliefs

Investors' Relief is separate from Business Asset Disposal Relief, and you can benefit from both reliefs during your lifetime (each has its own £10 million limit).

You cannot claim both Investors' Relief and Business Asset Disposal Relief on the same shares – you must choose which relief to claim if both potentially apply.

The relief applies after you've used your annual Capital Gains Tax allowance (£3,000 for the 2025/26 tax year). You deduct your annual allowance from your total gains first, then apply Investors' Relief to qualifying gains.

When the relief might not apply

Common situations where Investors' Relief doesn't apply include:

• You bought the shares from an existing shareholder rather than subscribing for new shares
• You were employed by or were a director of the company at any point while holding the shares
• The company was listed when you acquired the shares
• The shares were issued before 17 March 2016
• You dispose of the shares within three years of subscription
• The company is not a trading company (for example, if it mainly holds investments)

Sources

• Investors' Relief (HS308)

This article provides general guidance based on current HMRC rules. For advice specific to your situation, speak to your accountant.