Business Asset Disposal Relief Explained: Selling a Business, Capital Gains Tax and Eligibility

Business Asset Disposal Relief (BADR) can reduce Capital Gains Tax (CGT) on a qualifying sale of a trading business or shares in a qualifying personal company. For disposals made from 6 April 2026, the BADR rate is 18%, rather than the ordinary individual CGT rate that would otherwise apply. It is a relief on qualifying gains, not an exemption from paying tax, and it has a lifetime limit.

Important update — 30 October 2026: Following Budget 2026, HMRC published a proposal on 29 October 2026 to reduce the BADR lifetime gains limit from £1 million to £500,000 for qualifying disposals on or after 6 April 2027. The change is to be legislated through Finance Bill 2026–27. As at this article’s preparation date, the £1 million limit is the current rule; the £500,000 rule is proposed for future disposals. The proposal includes anti-forestalling provisions, so entering into an artificial pre-deadline contract is not a safe way to secure the existing limit. Read the official HMRC policy paper.

If you are selling a company, preparing for a management buyout, retiring from a sole-trader business or negotiating a shareholder exit, the transaction structure and dates can matter as much as the headline price. Britvex helps business owners coordinate the tax figures, qualifying conditions, records and filing requirements with their legal advisers and transaction team.

Quick answer: who can claim Business Asset Disposal Relief?

BADR is designed for qualifying disposals by individuals and, in some circumstances, trustees. Typically, a person might qualify when they sell all or part of a business they have owned as a sole trader or partner for the required period; or when they dispose of shares in a trading company in which they meet the personal-company, officer/employee and other statutory tests. Not every sale of shares, investment property or company asset qualifies.

The detail can be technical; start with HMRC’s BADR eligibility guidance before relying on any example.

BADR versus ordinary Capital Gains Tax: why the distinction matters

When an individual disposes of a chargeable asset, the gain is generally measured by reference to sale proceeds, allowable cost and other permitted deductions. BADR does not eliminate the need to calculate the gain correctly. Instead, it can apply a lower CGT rate to the part of the gain that meets the relief conditions and fits within the remaining lifetime limit.

The ordinary CGT rate for relevant higher-rate individual gains is generally 24% under the current rules, but the exact computation depends on taxable income, available allowances, losses and the nature of the gain. A lower-rate taxpayer can face a different calculation. All figures below are simplified illustrations assuming the same gain qualifies and a 24% marginal ordinary CGT rate on the excess. They exclude annual exempt amount, losses, costs and other claims.

These outcomes assume no earlier BADR usage. If the seller already used part of the relief, their remaining headroom may be smaller. Do not infer that a sale must be completed before April 2027: commercial negotiations, tax law, tax-year status, transaction terms and anti-forestalling restrictions need bespoke advice.

The current rules and the proposed change: what is actually announced?

The official policy paper issued on 29 October 2026 says the government intends to reduce the BADR lifetime limit from £1 million to £500,000 for qualifying disposals made on or after 6 April 2027. The BADR rate is already 18% for disposals from 6 April 2026. The measure is not described as eliminating BADR; rather, it would restrict how much cumulative gain benefits from the 18% rate.

There are two traps for business owners. First, historical BADR claims count toward the lifetime limit: a previous £400,000 qualifying gain might leave £600,000 under today’s £1 million cap but only £100,000 under a future £500,000 cap, if the legislation operates as announced. Second, the government has proposed rules relating to unconditional contracts not yet completed and certain share reorganizations. A contract’s CGT date does not automatically guarantee the old BADR cap for an artificial arrangement. HMRC’s Budget measure sets out the intended protections.

A sensible owner should review their eligibility, previous claims and a realistic business-exit timetable with advisers, rather than attempting a rushed or contrived disposal purely because a date has been announced.

Selling shares in your limited company: the five eligibility tests

For a straightforward disposal of shares that are not acquired through a qualifying Enterprise Management Incentive (EMI) option, the core BADR share-disposal conditions normally need to hold for at least two years up to disposal.

1. Trading activity: the company is a trading company, or the holding company of a trading group, rather than primarily an investment vehicle. Non-trading activity can become material.
2. Employment or office: the seller is an employee or office holder of the company or qualifying group. A director is an office holder, but holding shares alone is not sufficient.
3. Ordinary share capital: the seller holds at least 5% of the ordinary share capital of the personal company.
4. Voting rights: the holding gives at least 5% of the company’s voting rights.
5. Economic entitlement: the holding meets the additional 5% entitlement test relating to distributable profits and winding-up assets, or 5% of proceeds on a disposal of the company’s ordinary share capital.

The statutory definitions are precise. Different classes of shares, dilution, growth shares, investment holdings and reorganizations can alter the result. The timing of changes to share rights is as important as the date printed on a share certificate. Read HMRC’s share-disposal conditions.

A director with shares is not automatically eligible

Suppose a founder has been a director for five years and owns 4% of the ordinary share capital. They may fail the ordinary personal-company 5% conditions even though they manage the company daily. Conversely, an investor with 15% but no officer/employee status may fail for a different reason. These are not matters that an ordinary Companies House profile alone can establish.

What if shares were diluted by investment?

Special elections can sometimes preserve relief where a qualifying shareholding falls below 5% following a new issue of shares, subject to conditions, time limits and valuation work. The election can crystallize a notional gain or defer the tax. This must be reviewed before issuing new shares, particularly in a fundraising or exit process.

Special rules for Enterprise Management Incentive (EMI) shares

EMI option shares can qualify under special BADR provisions. In general, HMRC’s eligibility page says the option must have been granted at least two years before disposal and the shares acquired after 5 April 2013. The ordinary 5% personal-company holding conditions do not apply in the same way. However, the trading-company and employment conditions, option documentation and grant/exercise chronology still matter. Do not treat every employee share plan as EMI. HMRC explains the EMI distinction.

Sole traders and partners: selling a business rather than shares

A self-employed person may qualify when selling all or part of a business they owned and operated for at least the required two-year period. Closing a qualifying business and disposing of business assets can also qualify where the applicable closure and three-year disposal timing conditions are met. A partnership disposal can carry its own material-disposal tests.

A sale of trading goodwill, premises or machinery may not produce the same outcome as a sale of shares in a limited company. If the company sells its own assets, the company may pay Corporation Tax on gains and the owner may face further tax when extracting proceeds. That two-level result is different from an individual’s direct sale of qualifying company shares.

Case study: £800,000 gain on the sale of a trading company

A hypothetical shareholder sells their qualifying shares and makes an £800,000 gain. Assume they have used none of their lifetime BADR limit and, for illustration, the excess would fall within the 24% ordinary CGT rate.

Under the current £1 million lifetime limit: all £800,000 falls within the BADR ceiling, giving £144,000 at 18%. Under the proposed £500,000 limit: £500,000 at 18% is £90,000, while £300,000 at 24% is £72,000; total £162,000. That is an illustrative £18,000 difference.

This is not a guaranteed saving from completing a transaction early. A real computation must account for whether the gain is qualifying, earlier claims, tax-year timing, selling expenses, losses, annual exemptions, and whether anti-forestalling rules alter the analysis.

The separate Founders’ Relief proposal is not BADR

Budget 2026 also announced a separate proposed Founders’ Relief for certain founders and significant early investors in innovative high-growth businesses, with an intended 10% CGT rate on qualifying gains within a £10 million lifetime ceiling from 6 April 2027. This is subject to detailed conditions and consultation; it is not a universal 10% rate for founders, and not a reason to assume every small-company owner qualifies. The HM Treasury consultation runs until 30 November 2026. Official Founders’ Relief consultation.

A business owner should not automatically choose between BADR and Founders’ Relief without reviewing the eventual enacted conditions, overlap restrictions and interaction with other relief claims.

Claiming BADR: records, Self Assessment and deadlines

Relief generally needs to be claimed, normally in connection with the Capital Gains Tax pages of Self Assessment or using the appropriate HMRC helpsheet process. HMRC says the claim deadline is generally 31 January two years after the end of the tax year of disposal. For example, the published deadline for 2025–26 disposals is 31 January 2028. Specific transactions and tax reporting can involve additional requirements, so confirm the applicable filing route early.

Prepare and retain evidence that supports both the amount of the gain and the two-year eligibility period. Relevant records can include the share register and class rights, option agreements, Companies House filings, director appointments, payroll records, accounts showing trading activity, group structure, subscription agreements, sale contracts, valuations, legal costs, prior BADR claims and evidence of commercial timing.

The official BADR claiming guidance should be checked whenever a real claim is prepared. Britvex can assist with Self Assessment services and the relevant tax calculation; legal title transfers and binding sale documents require the appropriate legal adviser.

Seven common mistakes before selling a business

Mistake 1 — treating the sale price as the taxable gain. A £1.2 million share sale does not automatically create a £1.2 million taxable gain. The acquisition cost, permitted expenses and other adjustments can matter.

Mistake 2 — assuming all company directors qualify. The ordinary share, voting-rights and economic-interest tests are separate conditions.

Mistake 3 — ignoring previous claims. The BADR limit is cumulative over an individual’s lifetime.

Mistake 4 — treating an asset sale as a share sale. The taxpayer, tax base and possible extraction taxes may differ substantially.

Mistake 5 — ignoring investments inside a trading company. Significant non-trading activity can affect qualification.

Mistake 6 — assuming a signed contract secures today’s lifetime limit. The October 2026 measure expressly addresses anti-forestalling arrangements.

Mistake 7 — planning after signing heads of terms. By then, the structure, consideration, share rights or completion timing may be difficult to change without new risks.

Business-exit checklist: what to review before accepting an offer

1. Identify the legal seller: individual, partnership or limited company.
2. Obtain an updated cap table, share register and details of all share classes.
3. Check the two-year history of shareholding, voting rights, economic entitlements and office/employment.
4. Review the company’s trading status and any significant investment/non-trading activities.
5. Gather dates and amounts of all previous BADR claims.
6. Estimate the gain after legitimate acquisition costs, fees, available losses and exemptions.
7. Model outcomes under the current £1 million limit and the proposed £500,000 future limit.
8. Consider whether EMI, a genuine reorganization, a group company or mixed consideration adds complexity.
9. Ask tax and legal advisers to review deal terms and anti-forestalling exposure before signing.
10. Plan the reporting, claim, settlement cash flow and post-sale record retention.

For a wider company structure or sale-preparation discussion, contact Britvex Advisory or request a tax-advisory quotation through the client portal. Our work can coordinate figures, accounts and UK compliance with the transaction’s legal advisers.

How Britvex can support a business sale

BRITVEX ADVISORY LTD supports UK business owners with accounts, tax review, Corporation Tax, Self Assessment and company compliance. As a Companies House-approved Authorised Corporate Service Provider (ACSP), supervised by HMRC for anti-money laundering and registered with the ICO, Britvex offers structured onboarding for appropriate services. ACSP approval is not a guarantee of tax relief or an alternative to specialist transaction lawyers. Company number: 16133503.

If you are considering a disposal, start with the eligibility facts and transaction calendar rather than just the tax rate. Use Britvex.com, Britvex.co.uk or the secure client portal. You can call +44 20 3758 7500 or email info@britvex.co.uk.

Frequently asked questions about Business Asset Disposal Relief

Official sources and editorial review

This guidance was prepared 30 October 2026 using official HMRC and HM Treasury guidance. It is general UK tax information, not individualized transaction advice. Recheck the proposed April 2027 changes after the Finance Bill process.

• HMRC — BADR eligibility
• HMRC — BADR how to claim
• HMRC — BADR 2026 helpsheet
• HMRC — proposed reduction in lifetime limit (29 October 2026)
• HM Treasury — Founders’ Relief consultation