Selling a business is one of the largest financial events in an entrepreneur’s life — and one of the most tax-laden. Get the planning right and you could save tens or hundreds of thousands of pounds. Get it wrong and you might pay CGT at the wrong rate, miss BADR, or trigger unexpected VAT.
This guide covers every tax that applies when selling a UK business, with worked examples across the main business structures.
This is not tax advice. Selling a business requires specialist professional advice. Speak to a tax adviser and accountant well before you agree a price or heads of terms.
The Main Taxes on a Business Sale
| Tax | Applies when | Rate |
|---|---|---|
| Capital Gains Tax (CGT) | Gain on sale of business/shares | 14–24% depending on type and qualifications |
| Income tax | Earn-outs received as employment income; asset sales by sole traders | Up to 45% |
| VAT | Asset sales not qualifying as TOGC | 20% on standard-rated assets |
| Employer NI | If earn-out deemed employment income | 15% (employer) |
| Corporation tax | Company sells its assets (not a share sale) | 19–25% |
| Income tax (dividend) | Company distributes sale proceeds as a dividend | 8.75–39.35% |
Business Asset Disposal Relief (BADR)
BADR is the most important tax relief for business sellers. It reduces CGT on qualifying gains to:
- 14% from 6 April 2025 to 5 April 2026 (rate is currently 14%)
- 14% for 2026/27 also (confirmed, not yet changed)
- 18% from 6 April 2027
The normal CGT rate on business assets is 24% for higher/additional rate taxpayers.
| Gain size | Without BADR (24%) | With BADR (14%) | Saving |
|---|---|---|---|
| £250,000 | £60,000 | £35,000 | £25,000 |
| £500,000 | £120,000 | £70,000 | £50,000 |
| £1,000,000 | £240,000 | £140,000 | £100,000 |
The lifetime limit is £1 million of qualifying gains. Once used, any further gains on business sales are taxed at the normal CGT rate.
BADR: Who Qualifies?
See the full Business Asset Disposal Relief Guide for details. In summary:
- Sole traders/partnerships: Must have owned the business for at least 2 years
- Company shareholders: Must hold 5%+ of ordinary shares, be an officer or employee, and have met these conditions for at least 2 years
- Timing: You must have disposed of the business assets or shares within 3 years of ceasing to trade
Sole Trader and Partnership Sale
When you sell a sole trader business:
- Each asset is valued individually — goodwill, premises, equipment, stock
- You pay CGT on any gain on business assets (fixtures, goodwill, premises if they have risen in value)
- Any stock sold is taxed as income (business income), not capital
- Business premises — CGT applies on gain; principal private residence relief does NOT apply to business elements
Example: Sole trader bakery sale
- Goodwill: £80,000 (CGT applies; qualifies for BADR)
- Equipment (written-down value): £15,000, sold for £25,000 → balancing charge = income tax
- Stock: £8,000 → income tax
- Total CGT gain: £80,000 (goodwill) − £0 base cost = £80,000
With BADR at 14%: £11,200 tax Without BADR at 24%: £19,200 tax
Limited Company: Share Sale vs Asset Sale
Share Sale
The buyer purchases your shares. You realise a capital gain equal to the sale price minus your original share cost (plus any additional contributions).
- Seller: clean exit, CGT at 14% (BADR), or 18%/24% without
- Buyer: takes on whole company including historic liabilities
- BADR: can be claimed if conditions met; typically cleaner than asset sale
Example: Julia sold her 100% stake in a digital marketing agency for £650,000. Original share cost: £1,000. Qualifying for BADR.
- Gain: £649,000
- CGT at 14%: £90,860
- CGT without BADR at 24%: £155,760
- BADR saving: £64,900
Asset Sale (via company)
The buyer purchases the company’s assets. The company receives the sale proceeds, not Julia personally.
- Company pays corporation tax on any gain on assets sold (19–25%)
- Julia extracts the proceeds via dividends or a winding-up distribution — additional dividend tax or income tax applies
- Total effective tax rate is often higher than a direct share sale
In many asset sale scenarios, sellers face 25% corporation tax + 39.35% dividend tax = very high effective rates. BADR can be claimed on a winding-up distribution if Entrepreneurs’ Relief conditions are met, but this requires careful structuring.
VAT on Business Sales: The TOGC Rules
When you sell a business as a going concern (TOGC), no VAT is charged on the sale. This applies if:
- The buyer is purchasing a going concern (same type of business)
- The buyer is registered for VAT (or registers on completion)
- The seller and buyer agree that TOGC treatment applies
Failure to structure the sale as a TOGC means VAT at 20% on the standard-rated assets. On a £500,000 asset sale, that is £100,000 of VAT — potentially recoverable by the buyer, but generating a cash flow burden and risk if the buyer cannot reclaim it.
Earn-Outs: Tax Complexity
Earn-outs are common in professional services and technology businesses. They defer part of the consideration, payable if the business hits certain targets after the sale.
Capital or Income?
| Earn-out type | Tax treatment |
|---|---|
| Pure performance target, seller not employed post-sale | Usually CGT (capital) |
| Seller stays on post-sale as employee; earn-out based on performance | HMRC may treat as employment income — up to 45% |
| Guaranteed minimum earn-out on top of fixed price | Capital on the fixed element; depends on structure for earn-out |
HMRC’s Position
HMRC looks at whether the earn-out is truly “capital” (fair compensation for the value transferred) or whether it functions as deferred remuneration for the seller’s continued services. If the seller is required to stay in employment and the earn-out is contingent on staying, HMRC is more likely to treat it as employment income.
Goodwill and Entrepreneurs
Goodwill in an unincorporated business (sole trader or partnership) is typically CGT-qualifying and eligible for BADR.
Goodwill in a company that was previously personally owned creates complex intangibles rules — corporation tax on company-level gain, then dividend tax on extraction. This is why some business sales are structured carefully around the entity type.
Pre-Sale Planning Checklist
| Action | Benefit |
|---|---|
| Check BADR qualification at least 2 years before sale | Ensure the 2-year ownership test is met |
| Plan sale date to use BADR before April 2027 (rate rises to 18%) | Save up to £40,000 on full £1m allowance |
| Consider Investors’ Relief for investor-shareholders | 14% on external investors’ gains up to £10m |
| Structure as a share sale rather than asset sale | Typically more tax-efficient for the seller |
| Review earn-out structure with tax adviser | Avoid accidental employment income treatment |
| Confirm TOGC treatment for VAT | Avoid unnecessary 20% VAT on assets |
| Transfer shares to spouse before sale if they have BADR capacity | Double the effective BADR allowance to £2m |