Business Sale Tax: Questions Before You Agree a Price

Start with the seller and the asset

The phrase selling my business can describe several different transactions. An individual may sell shares in a company, a company may sell its trade and assets, or a sole trader may dispose of a business. The tax analysis starts with identifying the legal seller and precisely what changes hands, not with applying a percentage to an indicative valuation.

In a company asset sale, tax can arise within the company, with further consequences when funds are extracted by shareholders. A personal share sale has a different starting point. Commercial preferences may also differ: buyers and sellers do not always favour the same structure. Ask for a comparison of realistic alternatives before accepting a proposal framed around only one.

Check current rates without assuming relief

For individuals, the main Capital Gains Tax rates are 18% and 24%, with the applicable rate depending on the circumstances. Business Asset Disposal Relief, formerly Entrepreneurs' Relief, has a £1 million lifetime limit on qualifying gains. Its rate was 14% for disposals from 6 April 2025 and is 18% for disposals from 6 April 2026.

Those rates do not establish eligibility. Ownership history, the nature of the business, your role and the rights attached to shares can matter. Ask your adviser to review the full conditions and any previous use of the lifetime limit. Do not assume that a familiar company structure, or a previous shareholder's claim, proves that your own disposal qualifies.

Map the tax bill against the payment timetable

A sale agreement may divide consideration between completion cash, fixed deferred instalments and an earn-out linked to future results. These categories need separate analysis. Receiving money later does not automatically postpone the related tax, and contingent consideration can create technical questions about valuation and subsequent receipts. The distinction matters if you intend to spend most completion proceeds immediately.

Request a cash-flow schedule showing expected receipts, transaction costs and potential tax payment dates. Include a downside case in which conditional payments are smaller or later than hoped. Your accountant and solicitor should work together on the wording and treatment of the consideration rather than reviewing it independently after commercial terms have effectively been settled.

Treat VAT as a transaction question

A qualifying transfer of a business as a going concern can fall outside the scope of VAT; this is not the same as simply calling the sale VAT-free. Conditions must be met, and property can introduce additional complexity. Whether the buyer intends to continue the business is relevant, but that fact alone does not settle the analysis.

Where an asset transaction includes commercial premises or an option to tax, obtain advice before setting the completion timetable. Ask who must do what, by when, and how any VAT exposure affects funding. The sale documentation should reflect the agreed treatment and allocate responsibilities appropriately. Do not leave this to a last-minute assumption between the buyer's and seller's finance teams.

Revisit the family plan after a sale

The assets you hold after completion may have a different inheritance-tax profile from the business interests you owned before it. From 6 April 2026, 100% Business Property Relief applies only up to a combined agricultural and business property allowance of £2.5 million, with 50% relief generally applying above that allowance. Take current advice rather than relying on historic descriptions of unrestricted relief.

Family transfers, retained shares and sale proceeds should therefore be considered together with retirement income and estate plans. A gift is not automatically a simple alternative to a sale, and cash needs can conflict with succession ambitions. Avoid implementing ownership changes solely because someone describes them as tax efficient without explaining their wider consequences and conditions.

Ask for a written net-proceeds comparison

A useful tax discussion ends with an intelligible comparison, not just a list of reliefs. Ask your adviser to state the transaction assumptions, expected liabilities, important conditions and unresolved questions. Make sure the figures reconcile with the commercial offer, including any adjustments to cash, debt and working capital, rather than a marketing valuation prepared months earlier.

Review that comparison when terms change. A revised payment mechanism or asset perimeter can alter the result even when the headline price stays the same. This article is commercial context, not personal tax or legal advice. Use an experienced ExitPlanning.co.uk adviser to coordinate the planning discussion, with appropriately qualified specialists confirming the tax and legal position before you commit.