If you’re buying or selling a business, one of the first questions you will likely face is whether to structure it as a share sale or an asset sale. Most business owners assume it’s a straightforward choice. It’s not.
The structure you choose affects how much tax you pay, what liabilities transfer, how employees are handled, and whether the deal actually completes.
The core difference: in a share sale, you buy the company itself, including all its history, liabilities, and obligations. In an asset sale, you cherry-pick specific assets and liabilities, but deal with more complexity when transferring them. Sellers typically prefer share sales for tax reasons, while buyers usually prefer asset sales in order to limit risk.
And there lies the primary problem: buyers and sellers often want different things. So the structure you end up with often depends on negotiation, not just preference. Getting this wrong can cost you hundreds of thousands in unnecessary tax, or kill the deal entirely. Read on to find out more.
What Is a Share Sale?
In a share sale, the buyer purchases the shares of the company from the existing shareholders. They are buying ownership of the company itself, the legal entity that runs the business. This means that the buyer acquires everything the company owns and everything it owes. This includes:
- All assets
- Property
- Equipment
- Intellectual Property
- Customer contracts
- All liabilities
- Debts
- Legal claims
- Tax obligations
- All employees
- All ongoing obligations
The purpose of a share sale is that the company is able to effectively continue as before, just with new owners, as nothing changes operationally from the top down.
For the seller, this is usually much cleaner. You sell your shares, receive the proceeds directly, and are free to walk away. It’s a clean break, as the company, with all its complexities, becomes somebody else’s problem.
However, for the buyer, this represents a greater risk. After all, if you are inheriting everything, that can include historic issues and disputes you might not even know about.
What Is an Asset Sale?
In an asset sale, the buyer purchases specific assets and liabilities from the company. They’re not buying the company itself, instead they are choosing what they do and don’t want.
The assets can include physical ones (property, machinery, stock), intangibles (brand names, intellectual property, goodwill, customer lists), and contracts (though these often need third-party consent to transfer).
For the buyer, this is typically safer. They can leave behind unwanted liabilities, old disputes, and risky contracts. If there’s a pending legal claim against the company, it stays with the seller.
For the seller, it’s messier. The company still exists after the sale, often with leftover liabilities but no operating business. You’ll need to wind it down properly, which costs time and money. There is also the possibility that you might face a double tax charge: once when the company sells the assets, and again when you extract the proceeds.
Asset Sale vs Share Sale: Key Differences That Actually Matter
Tax Treatment: The Numbers That Drive Decisions
This is where share sales vs asset sales differ most significantly, and why sellers and buyers often disagree about structure. For sellers, the tax difference can be enormous.
If you are selling a company worth £2 million and originally invested £500,000, you have a £1.5 million gain on paper.
In a share sale scenario:
- You pay Capital Gains Tax on £1.5 million.
- With Business Asset Disposal Relief: 10% = £150,000 tax.
- Without BADR (or above the £1m lifetime limit): 20% = £300,000 tax.
- You receive the sale proceeds directly as a shareholder.
Asset sale scenario:
- The company pays Corporation Tax on the gain: 25% of £1.5m = £375,000
- Sale proceeds after tax: £1,625,000 left in the company
- You then extract this via dividend or liquidation: roughly 33% additional tax on amounts over allowances = £270,000+
- Total tax bill: £645,000+
That’s potentially £495,000 more tax on the same £2 million sale depending on how the share sale vs asset sale decision swings. For many business owners, this alone will determine the desired structure. Getting expert corporate and commercial advice on the tax implications early in the process is critical to avoiding costly mistakes.
BADR (previously Entrepreneurs’ Relief) can reduce CGT to 10% on the first £1 million of gains for qualifying share sales. This relief isn’t available on asset sales, making the gap even wider for qualifying owners.
The impact on smaller business sales:
This tax differential has fundamentally affected how business sales are structured across all value ranges. Until recently, transactions under £500,000 typically defaulted to asset sales, as the legal complexity of share sales was not considered worthwhile for the smaller value interaction.
However, with Corporation Tax now at 25%, the double taxation effect has become so punitive that even owners of more modestly sized businesses (SMEs) are now pushing for share sales, despite the higher legal costs attached. The tax savings often dwarf the additional legal fees, transforming how these smaller transactions are approached.
For buyers, asset sales used to offer significant tax advantages through capital allowances on purchased assets. While some relief (such as Full Expensing and Annual Investment Allowance) still exists, the practical benefits for asset purchasers has significantly diminished compared to historical positions, reducing the tax advantage that once made asset sales much more attractive to buying parties.
As a result, share sales now offer no equivalent tax relief for buyers. You are buying shares, not assets, so there isn’t anything to claim capital allowances on.
Employee Transfers and TUPE
This is one of the most misunderstood aspects of asset sales: the assumption that buyers can cherry-pick assets and employees. They can’t.
During Share Sales: Employees remain employed by the same company and their contracts continue unchanged. There is no requirement to consult with them about the sale (though communication is always seen as a sensible option to ensure continuity).
During Asset Sales: TUPE (Transfer of Undertakings Protection of Employment) regulations automatically apply. This means:
- Employees transfer to the buyer on their existing terms and conditions.
- You cannot use the transfer as a reason to change terms, reduce pay, or make redundancies.
- You must consult with affected employees before completion.
- You must provide specific information about why the transfer is happening, when, and what it means for them.
Any failure to comply with these regulations can result in an employment tribunal claim worth up to 13 weeks of pay per affected employee.
The critical point that many buyers miss is that TUPE means you can’t cherry-pick employees in the same way you would assets. If somebody works primarily for the business, or the part of the business, being sold, then they transfer across whether you want them to or not.
For sellers, TUPE also creates an additional complication. This is because you now need to provide detailed employee information to the buyer and manage the consultation process that alerts staff to the sale before you’re ready.
What Happens to Contracts
Share Sale: Most contracts continue automatically. The company is the same legal entity, just with different owners. However, many commercial contracts include “change of control” clauses that give the other party rights if ownership changes. These rights are often used to renegotiate terms, or terminate them entirely in some circumstances.
Asset Sale: Contracts don’t transfer automatically. Each one needs to be either assigned (transferred) or novated (replaced with a new contract) with the consent of the other party. If a key supplier or customer refuses consent, you might not be able to complete the deal, or you’ll need to renegotiate terms.
This is particularly important for property leases, intellectual property licences, and major customer contracts. Landlords often use this as an opportunity to increase rent.
Liability and Risk Transfer
| Risk Type | Share Sale | Asset Sale |
| Historic tax issues | Buyer inherits | Stays with seller |
| Old legal claims | Buyer inherits | Stays with seller (unless specifically assumed) |
| Employment tribunal claims | Buyer inherits | Past claims stay with seller; future risk transfers via TUPE |
| Warranty claims from customers | Buyer inherits | Stays with seller (unless contract novated) |
| Environmental contamination | Buyer inherits | Stays with seller (unless on transferred property) |
| Pension liabilities | Buyer inherits | Usually stays with seller unless scheme transfers |
In a share sale, the buyer inherits all liabilities, both known and unknown. In order to protect against this, buyers often demand extensive warranties and indemnities from sellers. These are contractual promises that certain things are true (warranties), and that the seller will compensate the buyer should specific issues occur (indemnities).
Even with warranties, buyers aren’t fully protected. Here’s why:
- Sellers typically cap their liability at 10-30% of the purchase price. So if you paid £2 million and discovered a £500,000 problem, you might only recover £200-600k.
- Warranties expire after around 12-24 months for general matters (though tax warranties can last up to 7 years). If you discover a problem after that you get nothing.
- Due diligence carve-outs mean if an issue was flagged (even vaguely) during due diligence, the warranty won’t cover it. The logic is ‘you knew about this risk when you bought it.’
Translation: major problems discovered late, or problems bigger than the cap, become the buyer’s problem entirely.
For asset sales, the buyer only takes on liabilities they have specifically agreed to acquire. Historical tax liabilities and pre-existing legal claims and issues will typically stay with the selling company. This is why buyers prefer asset sales in most circumstances, as they are starting with a clean slate.
Three Questions That Usually Determine the Structure
Rather than working through every scenario, most deals come down to these three factors:
1. Does the company have significant unknown or uncertain liabilities?
If yes, the buyer will push hard for an asset sale. This includes:
- Ongoing tax enquiries or disputes.
- Potential legal claims (employment, customer disputes, regulatory).
- Environmental issues on owned property.
- Pension scheme deficits.
- Historical compliance problems.
If the seller can’t provide complete assurance on these issues through due diligence and warranties, expect the buyer to insist on an asset sale. Experienced corporate solicitors can help you assess these risks and structure appropriate protections.
2. Are there contracts or licences that are difficult or impossible to transfer?
If yes, share sale becomes more practical. Examples include:
- Long-term customer contracts with no-assignment clauses.
- Government contracts or grants tied to the specific legal entity.
- Regulatory licences that would need reapplying for (can take months).
- Property leases where the landlord will only consent at a prohibitive cost.
- Intellectual property licences that restrict transfer.
If the business depends on contracts that won’t transfer easily, an asset sale might be commercially impossible.
3. Will the seller face punitive double taxation in an asset sale?
If yes and the amount is significant, sellers will push hard for a share sale.
Use the calculation from earlier: if you’re looking at £300k-500k additional tax from double taxation, that’s a serious commercial issue. The seller will either insist on a share sale or demand that the buyer increase the purchase price to compensate (which the buyer usually won’t accept).
The reality: If the answer is “yes” to questions 1 and 3, you’re heading for difficult negotiations. The buyer wants an asset sale to limit risk, but the seller can’t afford the tax hit. This is where deals often stall or require creative solutions.
The Negotiation Reality: What Actually Happens in Practice
Here’s what theoretical guides don’t tell you: the structure rarely gets decided based on pure logic or solely tax optimisation. It’s about leverage.
When sellers have leverage from multiple interested buyers, strong business performance, unique assets, and so on, they usually get their preferred share sale structure. Buyers will often accept this risk in exchange for warranties and indemnities, with an extensive due diligence process also implemented to act as the primary mechanism of protection.
When buyers have leverage, if they are the only serious bidder, business performance is declining, or the seller needs to exit quickly, they will feel more able to push for an asset sale in order to limit risk. This is because the seller will either accept the unfavourable tax treatment or have to walk away entirely, which they may not wish to do. The price may be adjusted upward slightly in order to compensate for the tax hit from the seller.
Mid-Negotiation Structure Changes
One of the most disruptive things that can happen is getting six weeks into due diligence and having one party demand a structure change. This happens when:
- Due diligence reveals problems the buyer didn’t anticipate, causing them to want to pivot from share sale to asset sale.
- The seller’s accountant runs the actual tax numbers and realises the asset sale will cost more than expected and they demand a share sale or price increase.
- A key contract turns out to be non-transferable, causing a pivot from asset sale to share sale.
When this happens, you’re essentially starting over on transaction documents, tax planning, and often due diligence. It can add months to the timeline or kill deals entirely. Working with corporate and commercial specialists from the outset helps you get the structure right first time and avoid these costly delays.
Common Share Sale & Asset Sale Questions
Q: Can I change from a share sale to an asset sale (or vice versa) once negotiations have started?
A: Yes, but it’s hugely disruptive. The structure affects the entire transaction document, the due diligence scope, and the tax planning. Changing mid-process means effectively going back to the start on many issues. This is why it’s generally considered better to get it right early, even if that means harder negotiations upfront.
Q: What if the company has both assets I want and liabilities I don’t — can I get the best of both?
A: Not really. Asset sales let you cherry-pick assets, but TUPE means employees transfer anyway, and some liabilities transfer by operation of law. Share sales with seller indemnities can protect you from specific known liabilities, but you’re still inheriting the company’s history. There’s no structure that gives you all the benefits of an asset sale with all the simplicity of a share sale.
Q: What happens to the company after an asset sale?
A: The selling company still exists but no longer has an operating business. The sellers need to deal with it, usually by winding it down through a formal liquidation (which can be tax-efficient), or keeping it dormant. Leaving it active with no business creates ongoing costs and compliance requirements with no benefit.
Q: If I’m buying a business, should I insist on an asset sale to limit risk?
A: Not automatically. A well-structured share sale with proper due diligence and good warranties can give you adequate protection. Additionally, the practical difficulties of an asset sale (getting contract consents, renegotiating terms, TUPE complications) can outweigh the risk benefits. It depends on the specific business and what problems might be lurking.
Why This Decision Matters More Than You Think
The difference between a share sale and asset sale isn’t academic. It determines:
- How much tax both parties pay (often the difference of hundreds of thousands for sellers).
- What risks the buyer inherits and how they’re protected.
- Whether key contracts and relationships survive the transaction.
- Whether TUPE applies and how employees are affected.
- How long the transaction takes and how complex it becomes.
- Whether the deal completes at all.
Getting this wrong doesn’t just cost money — it kills deals. The structure needs to work for both parties, which means understanding not just your own preferences but the practical realities of the business being sold.
And here’s what most guides won’t tell you: This decision usually gets made in the first 2-3 meetings with potential buyers. Wait too long to get proper advice, and you’re locked into whatever structure the buyer insisted on early. By the time you realise it’s going to cost you £300,000 in extra tax, you’re too far into due diligence to change it without killing the deal.
How WHN Solicitors Can Help
At WHN Solicitors, we advise owner-managed businesses of all shapes and sizes on sales and acquisitions, from smaller local operations through to substantial enterprises with global reach. We regularly assist with both sides of transactions, with particular specialisation aiding selling parties.
We understand that the structure decision affects businesses differently depending on their size and circumstances. We help clients work out which approach makes commercial sense before negotiations begin, negotiate the terms that protect their interests, and handle the legal mechanics of completion.
Whether you’re selling a business you’ve built over decades or acquiring your first company, getting the structure right from the start makes everything else easier. Don’t leave it until you’re mid-negotiation to work out whether you need a share sale or an asset sale.
Speak to Paul Matthews, the Director and Head of our Corporate and Commercial team at [0161 761 8075] or via email [Paul.Matthews@whnsolicitors.co.uk] to discuss your business sale or acquisition further.
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