Asset sale vs share sale: how each route is taxed for UK founders selling up
Beyond the legal mechanics, the two exit structures are taxed completely differently, and that difference often decides which one a founder pushes for at the negotiating table.
Why tax sits at the centre of the structure argument
Most explainers on asset sales and share sales focus on what happens to contracts, staff and liabilities. Those are real and important issues, but for a founder weighing up a deal, the tax outcome is often what actually shapes the negotiation. The same business, sold two different ways, can produce very different net proceeds for the people who built it. Understanding why is essential before any heads of terms get signed.
The basic split
In a share sale, the buyer purchases the shares in the company directly from its shareholders. The company itself does not change; only its ownership does. The shareholders receive the sale proceeds personally.
In an asset sale, the company sells its underlying assets (contracts, IP, equipment, goodwill, sometimes the trade itself) to the buyer. The proceeds land inside the company, not in the hands of the founders or shareholders. If shareholders want that cash personally, it has to come out of the company afterwards, typically as a dividend or through a formal liquidation.
That extra step is the whole reason the tax treatment diverges so sharply.
How a share sale is usually taxed
When founders and other individual shareholders sell shares, the gain is generally subject to Capital Gains Tax (CGT) in their personal hands. There is a relief aimed specifically at people selling shares in a trading company they have worked for and held a qualifying stake in, known as Business Asset Disposal Relief (BADR), formerly Entrepreneurs’ Relief. Where it applies, it can reduce the rate of CGT payable on a portion of the gain, subject to a lifetime limit.
The rules around who qualifies, the required shareholding, the holding period, and the lifetime limit change from time to time, so none of the specific figures should be relied on from memory. Always check the current position directly with HMRC or a specialist adviser before assuming a deal qualifies.
For a founder, the appeal of a share sale is straightforward: proceeds go straight to the individual, there is a single layer of tax rather than two, and a well-structured qualifying disposal can be relatively efficient compared with other ways of extracting value from a company.
How an asset sale is usually taxed
An asset sale creates two potential layers of tax. First, the company itself may pay corporation tax on any gain it makes on the assets sold (the difference between what it receives and the tax value of what it is disposing of). Second, once the cash is inside the company, getting it out to shareholders triggers a further tax charge, usually as a dividend subject to income tax, or via a members’ voluntary liquidation which can, in some circumstances, allow the distribution to be treated as capital rather than income.
That second layer is why asset sales are often described as tax-inefficient for the people who actually own the business, even though the headline sale price might look identical to a share deal. The company effectively pays tax once, and the shareholders pay tax again on what is left.
Why buyers still push for asset sales anyway
Buyers are frequently indifferent to, or even keen on, the tax drag that asset deals impose on the seller, because the structure suits them for other reasons: they can cherry-pick which assets and liabilities to take on, avoid inheriting historic legal or tax exposure sitting in the target company, and sometimes get more favourable tax treatment themselves on the assets acquired. This is a common source of tension in exit negotiations. A buyer’s preferred structure and a seller’s preferred structure can pull in opposite directions, and the eventual choice is usually a trade-off reflected in the headline price.
What this means in practice for founders
A few practical points are worth keeping in mind when an exit conversation starts to move from a general discussion into structuring:
- Get the tax analysis done early, not after heads of terms are agreed. Once a structure is fixed in a term sheet it is harder to unwind.
- Ask whether BADR (or its replacement, if the rules have changed by the time you read this) is likely to apply to your specific shareholding, and confirm the current qualifying conditions with HMRC or an accountant rather than assuming last year’s rules still hold.
- If a buyer insists on an asset sale, factor the likely double taxation into your price expectations. A lower headline price with a share sale structure can sometimes leave founders with more in their pocket than a higher price achieved through an asset deal.
- Consider a members’ voluntary liquidation route where relevant, since it can change how post-sale distributions from an asset sale are taxed, but this needs proper professional advice and is not a DIY exercise.
Where to check the current rules
Tax rates, reliefs and lifetime limits in this area change reasonably often, so never rely on a remembered figure when real money is at stake. HMRC’s guidance and the government’s own pages on Capital Gains Tax and Business Asset Disposal Relief are the starting point, and a corporate tax specialist or accountant should be involved before any exit structure is finalised.