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Restricted Stock Units (RSUs): UK Tax Treatment, Popularity, and Challenges for Business Sellers
23 January 2025
Accounting & Compliance, Building a Business, Digital & Tech, Reducing Tax, Selling a Business, Structuring a Business
Restricted Stock Units (RSUs) have become a popular component of employee compensation, particularly among companies owned by US listed companies or US companies intending to list.
These equity-based incentives can be highly rewarding for employees but they come with specific tax implications.
When used as part of a business sale, whilst great for the buyer the business seller faces potentially significant increases in tax.
In this blog, we’ll look at what RSUs are, their UK tax treatment, their popularity with US listed companies who have UK bases, tax planning opportunities, and their use in business acquisitions.
What Are Restricted Stock Units (RSUs)?
RSUs are a form of equity compensation where an employer promises to grant shares to an employee at a future date, subject to certain conditions.
Typically, these conditions include:
- Vesting Schedules
Employees must remain with the company for a specified period or achieve certain performance targets.
- Forfeiture Provisions
If an employee leaves the company before the RSUs vest, they forfeit the shares.
Once vested, the employee becomes the owner of the shares, which can then be sold or retained.
UK Tax Treatment of RSUs
The taxation of RSUs in the UK occurs in two stages:
- At Vesting:
- When RSUs vest, they are considered employment income. The market value of the shares on the vesting date is subject to Income Tax and National Insurance Contributions (NICs).
- Employers typically withhold tax through the Pay-As-You-Earn (PAYE) system.
- On Sale of Shares:
- When the employee sells the shares, any increase in value since vesting is subject to Capital Gains Tax (CGT).
Example: Tax Implications of RSUs in the UK
Let’s say an employee is granted 1,000 RSUs, which vest when the share price is £50.
At vesting:
- The value of the shares (£50,000) is subject to Income Tax and NICs. This can include both employer’s and employee’s NI and will usually be dealt with through the PAYE system.
- If the shares are retained, increase in value to £60 per share and are later sold, the additional £10,000 (£60,000 – £50,000) is subject to CGT.
Why Are RSUs Popular Among US Companies?
US companies frequently use RSUs as part of their compensation packages for several reasons:
- Alignment of Interests: RSUs align employee incentives with company performance, encouraging long-term commitment and productivity.
- Simplicity: RSUs are easier to administer compared to other equity-based compensation, such as stock options.
- Recruitment and Retention: In competitive industries like tech, RSUs are a valuable tool for attracting and retaining top talent.
Tax Planning Opportunities for RSUs
Employees can employ several strategies to optimise the tax treatment of RSUs:
- Selling Immediately Upon Vesting: This avoids any exposure to capital gains tax on future share price increases, though it forfeits potential upside.
- Utilising Tax-Free Allowances: Selling shares in tranches can help employees maximise their annual CGT allowance.
- Charitable Donations: Donating shares to charity can reduce taxable income and may qualify for additional tax relief.
- Pension Contributions: Additional pension payments can be used to significantly reduce tax liabilities, particularly for those employees whose total income including RSUs exceeds £100K and they therefore lose their personal allowances.
Restricted Stock Units in Business Purchases and Retention of Key Individuals
RSUs are a powerful tool in mergers and acquisitions (M&A). They are often used to:
- Retain Key Talent: During acquisitions, RSUs can be issued as part of retention packages to ensure critical employees remain with the company during the transition.
- Performance Incentives: RSUs tied to post-acquisition performance milestones align the goals of key personnel with the success of the merged entity.
- Deferred Compensation: By structuring RSUs with staggered vesting schedules, businesses can spread the cost of the acquisition while ensuring employee loyalty.
In tech businesses they are increasingly being used as part of the consideration on acquisition.
In order to get capital treatment business owners would look for the consideration to be in the form of cash up front, loan notes, equity in the seller, earnouts and deferred consideration.
RSUs are not treated as capital, instead they are taxable as income which will have a major impact on the seller.
The end result when comparing RSUs to alternative capital structures could result in the seller suffering income tax and national insurance liabilities with an overall tax liability exceeding 50% compared with CGT rates at anywhere from 10% (2024/25 tax year) to 24%.
Potentially more than doubling the tax liability!
Summary
Restricted Stock Units are a versatile and valuable component of modern compensation strategies, particularly for US companies with global operations.
Understanding the UK tax treatment is crucial for employees to maximise their benefits and minimise tax liabilities.
Furthermore, for business owners selling their businesses RSUs will need to be considered carefully as they result in significantly higher tax liabilities.
Get in Touch
How we can help you as the recipient of RSUs:
- For employees we can help you understand the tax implications of RSUs. For business owners selling we can help to agree a more tax advantageous structure on sale or worse case at least assist you in understanding the tax implications.
- Helping you to report RSUs.
- Helping you to minimise the tax impact of RSUs through careful tax planning.
To find out more about how we can assist you please contact us to arrange a discovery meeting.
Our services
If you would like to find out more about some of our services relating to tax implications and RSU’s please take a look at our related pages:
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The content in this blog is correct as at 16th January 2025 See terms and conditions.
