What is a Restricted Stock Award (RSA): Guide for UK consumers

Just joined a new UK company or searching for a new job? Alongside salary, you’ll also need to look at employee benefits - and one of these might be Restricted Stock Awards (RSAs).

Some companies offer their employees RSAs when they join, or as a bonus based on company or employee performance. But what is an RSA exactly and how do they work in the UK?

This guide covers everything you need to know, including info on vesting, tax implications, pros and cons, and the differences between RSAs and RSUs.

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What are Restricted Stock Awards and how do they work?

Restricted Stock Options (RSAs) are a type of employee compensation where staff are granted company stock. However, it comes with certain restrictions.

Once granted a RSA, the employee is directly given stock and becomes the legal owner of the shares. However, it's called restricted stock because it can’t be freely traded or transferred.

Over time, during what is known as a ‘vesting period’, the employee may earn full rights over the shares.

RSAs are generally issued by startups and other early-stage companies, where the value of stock is quite low. This enables them to attract talent and offer competitive employee benefits - as well as maintaining a strong incentive for employees to stay at the company - without giving away too much in the way of valuable stock.

RSA vesting

The vesting period for Restricted Stock Awards may be a set period of time (i.e. 10 years) or it may be related to employee or company performance. For example, if the company hits a particular valuation or the employee meets a specific target or completes an important project.

As for what happens when RSAs vest, it usually means that you’ll own the shares outright - with no conditions or other strings attached. This means that you can sell, gift or otherwise dispose of them however you like - or you can hang on to them.

RSAs vs. RSUs - what’s the difference?

When looking into RSAs, you’re also likely to come across another type of employee compensation known as a Restricted Stock Unit (RSU). This is similar to an RSA, but with one important difference.

With an RSA, you’re issued the shares outright - albeit with restrictions on selling them. This doesn’t happen with RSUs, where no shares are set aside or issued at the time of granting. Instead, you’ll be given the right to acquire the shares at the end of the vesting period, provided you satisfy certain conditions.

You can think of RSUs as a promise to issue shares, whereas RSAs involve the actual issuing of shares at the time. In either case though, you still won’t have full rights over the shares (or be able to sell them) until the end of the vesting period.

There’s another difference too. With RSAs, you may be given voting and/or dividend rights, whereas this isn’t usually the case with RSUs.

Pros and cons of RSAs

So, are RSAs worth having as an employee? This is an important consideration, especially if employee benefits or compensation are a factor in whether or not you accept a new role.

Here are some of the pros and cons to think about:

Pros:

• You’ll own the shares outright, so you’ll benefit directly from company growth
• You may get voting and/or dividend rights
• Low cost and low risk - with no need for an upfront purchase (like with stock options).

Cons::

• Tax implications - income tax may apply on vesting, while capital gains tax may apply if you sell your shares
• If you leave the company before the end of the vesting period, you may forfeit your right to the shares.

How RSAs are taxed in the UK

While the granting of shares doesn’t usually trigger any UK tax liability, things can get more complicated when it comes to vesting. At this point, your shares may be taxed in a similar way to your salary, which means income tax and perhaps National Insurance (NI) too.¹

And if you hold on to your shares and later sell them at a profit, you may be subject to Capital Gains Tax (CGT). This is only if the value exceeds your annual capital gains tax allowance, which is currently set at £3,000 a year.¹

However, tax on RSAs and other share-related employee benefits can be really complicated. It can often depend on your circumstances, as well as how your employer has set up its RSA scheme. It’s strongly recommended to get professional tax advice to help you understand your obligations and make the right decisions.

📚How UK tax on profits from shares works

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Sources used:

1. Frazer James - tax and CGT on RSUs

Sources last checked 10-Feb-2026