Buying or selling a business is rarely complicated because of one big legal issue. It is usually the small details that get missed early on, then resurface later as delays, price reductions, or deal fatigue.
In 2026, that is more relevant than ever. Buyers are cautious, lenders are thorough, and compliance expectations are higher. On top of that, there are some specific tax and filing changes that can materially affect the outcome if they are not planned for properly.
I have spent more than 15 years supporting business sales across the UK. The deals that run smoothly tend to share the same trait. The legal structure and responsibilities are understood early, not discovered during due diligence.
This guide covers the legal essentials that matter most in UK business transfers in 2026, in plain English.
1) Decide early: share sale or asset sale
This is the first legal fork in the road, and it changes almost everything.
A share sale means the buyer purchases the shares in a limited company. The company continues as it is, including its contracts, liabilities, employees, history, and tax position. The buyer takes the company “as a whole”.
An asset sale means the buyer purchases selected assets of a business, such as equipment, stock, customer lists, goodwill, and sometimes premises. The buyer can often leave behind unwanted liabilities, but the legal work is usually more detailed because you must specify exactly what is being transferred.
Why it matters in practice:
Buyers often prefer asset purchases because they can control what they take on.
Sellers often prefer share sales because they are cleaner and can be more tax-efficient, depending on the circumstances.
Contract transfers, lease assignments, and employee arrangements often differ between the two.
This is not a decision to leave to the lawyers at the end. It affects valuation, tax, timeline, and risk allocation.
2) Get Heads of Terms right, because it drives the legal process
Heads of Terms are usually non-binding, but they set the direction of travel. If they are vague, the legal work becomes slow and argumentative. If they are clear, solicitors can draft efficiently, and both parties know what “done” looks like.
Good Heads of Terms should cover:
What is being sold (shares or assets, and what is included)
Price, deposit, and payment structure
Any earn-out, deferred consideration, or retention
Stock valuation method, if relevant
Proposed completion date and timetable
Handover support and whether the seller stays on
Key conditions, such as landlord consent, finance approval, or regulatory approvals
In 2026, buyers are far more likely to ask for protections. That is not a red flag on its own. It is a sign that you need clarity, not optimism.
3) Understand the tax touchpoints that can change the net outcome
Tax is not purely an accountant’s issue. It influences deal structure, timing, and what is negotiable.
Business Asset Disposal Relief and 2026 rate change
If you are selling qualifying business assets or shares, Business Asset Disposal Relief can reduce the rate of Capital Gains Tax. HMRC’s published changes confirm that the rate applying to BADR rises to 18% for disposals made on or after 6 April 2026, having been 14% for disposals from 6 April 2025.
That does not mean everyone should rush a sale. It does mean timing can affect net proceeds, and sellers should plan with advisers early, particularly if completion could fall either side of April.
HMRC’s BADR eligibility guidance is also worth reviewing, because the relief is not automatic and depends on conditions being met.
Stamp Duty on share transfers
In a share sale, stamp duty may be payable on the transfer of shares. HMRC’s GOV.UK guidance explains how stamp duty on shares works and when you usually need to send a stock transfer form to HMRC.
If shares are transferred electronically, Stamp Duty Reserve Tax may apply, and GOV.UK explains how this works in practice, including CREST arrangements.
VAT and TOGC in an asset sale
If the business is VAT registered, an asset sale can trigger VAT unless the transaction qualifies as a Transfer of a Going Concern, often referred to as a TOGC. HMRC’s VAT Notice 700/9 explains the conditions and VAT treatment.
Getting TOGC treatment wrong can create an unexpected VAT bill. It is one of the most common “late surprises” in asset deals, especially when property is involved or the buyer is not correctly registered.
4) TUPE and employee rights are not optional considerations
When a business changes hands, employees may be protected under TUPE. GOV.UK sets out the TUPE position clearly, including what happens to employment contracts and continuity of employment.
In practical terms, TUPE can mean:
Employees transfer to the buyer with existing terms intact
The buyer inherits certain employment liabilities
Consultation obligations may apply
This is one of the biggest reasons buyers want confidence in staffing records, contracts, and any historical disputes. Sellers who prepare employee information early tend to reduce deal friction later.
5) Contracts, consents, and third parties can decide your timeline
Many sellers assume completion is mainly down to solicitors. Often the real delays are third parties.
Common examples include:
Lease assignments and landlord consent
Franchise agreements requiring approval
Supplier agreements with change-of-control clauses
Customer contracts that cannot be assigned without consent
Finance agreements that must be settled or replaced
If you want a smoother deal, identify which contracts need consent before you go to market. A buyer will ask. If you do not know, it slows everything down.
6) Property and leases need earlier attention than most owners expect
If the business has a lease, the buyer will want to understand:
Rent review dates and clauses
Repair obligations and dilapidations exposure
Break clauses and assignment terms
Service charges, insurance, and restrictions of use
Even in a share sale, property issues matter. Buyers will still examine the lease because the company continues to hold it. If there are unresolved disputes or unclear repair obligations, buyers may reduce price or insist on a retention.
7) Data protection and customer data need to be handled properly
Most businesses now hold personal data, even small ones. Customer lists, mailing lists, booking systems, loyalty schemes, and staff records all fall into this category.
In an asset sale, transferring customer data must be done carefully. Buyers and sellers need to ensure a lawful basis and correct documentation. Even in a share sale, data compliance issues show up in due diligence, especially where marketing activity is involved.
If you are selling, make sure you can evidence:
Privacy notices
Consent or lawful basis for marketing
Secure storage and access controls
Clear retention policies
It does not need to be perfect. It needs to be defensible.
8) Companies House filings and governance are increasingly scrutinised
Where a limited company is involved, filings matter. Buyers expect the public record to be accurate and up to date.
GOV.UK guidance on selling a limited company sets out practical responsibilities, including director changes and notifying Companies House.
There is also a wider push towards stronger identity verification and cleaner filings. Companies House now references identity verification via GOV.UK One Login as part of using online filing services.
If a buyer sees messy governance, late filings, or unclear control information, they assume other things may also be disorganised. That increases perceived risk, which affects price and terms.
9) Due diligence is a legal process, not a paperwork exercise
Due diligence is where the legal reality is tested. Buyers will usually request:
Accounts and management figures
Tax filings and VAT history
Employee contracts and HR records
Key supplier and customer contracts
Lease and property documentation
Litigation history, disputes, and complaints
Evidence of ownership of IP and brand assets
Compliance records relevant to the sector
The seller’s job is not to “win” due diligence. It is to keep it calm. A well-organised data pack tends to shorten timelines and reduce renegotiation later.
10) Completion and post-completion obligations need to be clear
Completion is not the end. Many deals involve post-completion steps, such as:
Notifying customers and suppliers
Handing over systems, logins, and access credentials
Assigning domain names and IP
Settling final accounts or stock values
Filing updates at Companies House
Transitional support and training
If these are not planned, they become stressful. If they are written into the agreement clearly, they become manageable.
John Gaskell
The best business transfers are not the ones with the cleverest legal drafting. They are the ones where the parties understand the structure early, prepare properly, and remove surprises before the deal becomes emotional. In 2026, buyers still pay for good businesses, but they are less forgiving of avoidable legal mess.
Sources
HMRC, Transfer a business as a going concern (VAT Notice 700/9): https://www.gov.uk/guidance/transfer-a-business-as-a-going-concern-and-vat-notice-7009 HMRC, VAT Transfer of a going concern internal manual (updated 31 July 2025): https://www.gov.uk/hmrc-internal-manuals/vat-transfer-of-a-going-concern UK Government, Capital Gains Tax rates of tax (BADR 18% from 6 April 2026): https://www.gov.uk/government/publications/changes-to-the-rates-of-capital-gains-tax/capital-gains-tax-rates-of-tax HMRC, Capital Gains Manual CG64174 (BADR rate 18% from 6 April 2026): https://www.gov.uk/hmrc-internal-manuals/capital-gains-manual/cg64174 UK Government, Business Asset Disposal Relief eligibility: https://www.gov.uk/business-asset-disposal-relief HMRC, Stamp Duty on shares (stock transfer forms and when to pay): https://www.gov.uk/guidance/stamp-duty-on-shares HMRC, Pay Stamp Duty Reserve Tax (including CREST): https://www.gov.uk/guidance/pay-stamp-duty-reserve-tax UK Government, Business transfers, takeovers and TUPE overview: https://www.gov.uk/transfers-takeovers UK Government, TUPE transfers of employment contracts: https://www.gov.uk/transfers-takeovers/transfers-of-employment-contracts UK Government, Selling your business responsibilities (limited company): https://www.gov.uk/selling-your-business-your-responsibilities/limited-company UK Government, File changes to a company with Companies House (online filing and identity verification note): https://www.gov.uk/file-changes-to-a-company-with-companies-house
