Selling a business is one of the most significant financial events in a person's life. The proceeds can be transformative — but they come with an immediate tax problem, a set of investment decisions, and a transition that many business owners find harder to navigate than building the business in the first place.
This guide covers the practical financial steps after a business sale: managing the tax liability, deciding what to do with the proceeds, and how experienced business owners invest the capital from their exit.
The tax position immediately after sale
The sale of a business typically triggers a Capital Gains Tax liability. The rate depends on the structure of the sale, your income in the year of sale, and whether Business Asset Disposal Relief (BADR, previously Entrepreneurs' Relief) applies.
For 2026/27, BADR gives a reduced CGT rate of 18% on qualifying gains up to a lifetime limit of £1 million. Above that limit — or where BADR does not apply — CGT is 24% for higher-rate taxpayers. On a £2 million gain with full BADR, the tax bill is approximately £360,000. Without BADR, it rises to £480,000.
The CGT is due within 60 days of completion if the gain includes residential property. For share sales it is reported and paid through Self Assessment, with the bill due the following January. That gives you a window — sometimes a significant one — to take planning action before the tax is paid.
EIS CGT deferral — the most powerful tool available
EIS CGT deferral relief allows you to invest your gain into EIS-qualifying companies and defer the CGT until the EIS shares are sold. The investment must be made within one year before or three years after the gain arises. There is no cap on the size of gain that can be deferred.
This is not avoidance — it is an HMRC-sanctioned mechanism designed to channel business exit capital into the next generation of growing UK companies. It is used openly by thousands of business owners every year.
Example: You sell your business and realise a gain of £1.5 million. CGT at 24% would be £360,000. You invest £1.5 million in EIS. The CGT is deferred. You also receive EIS income tax relief of £450,000 (30% of £1.5 million) — though this is subject to having sufficient income tax liability to claim it against. The combined first-year tax saving: up to £810,000.
The deferred gain crystallises when you sell the EIS shares. If you hold them until death, the gain may be extinguished depending on your estate planning arrangements.
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EIS CGT deferral explained in full →The pension opportunity
A business sale often creates an opportunity to make significant pension contributions that were not possible while capital was tied up in the business. The annual pension contribution limit is £60,000 (including employer contributions), but unused allowances from the previous three years can be carried forward. A business owner who has not made large pension contributions in recent years could potentially contribute £240,000 in the year of sale and receive income tax relief at 40% or 45% on all of it.
Pension and EIS are complementary, not competing. Use pension contributions to maximise the pension carry-forward, then EIS for CGT deferral on the remaining proceeds.
Where business owners invest after exit
Business owners who have built and sold a company are typically not interested in passive index fund investing. They want involvement, return potential, and the ability to add value — and many find they miss the deal-making and investment analysis aspects of business ownership more than the operational side.
The most common post-exit investment paths include: angel investing in early-stage companies (often with EIS tax relief), becoming an LP in a venture capital fund, property investment (though the tax environment has changed — see below), building a diversified portfolio with a wealth manager, and starting another business.
For business owners with significant gains to manage and ongoing income tax liabilities, EIS investment — either direct or through a fund — is often the most tax-efficient vehicle for the growth capital allocation. The combination of income tax relief, CGT deferral, CGT exemption on gains, and IHT relief creates a package that no other investment wrapper matches.
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What is EIS? →Also Read
What is a sophisticated investor? →The identity transition
This is rarely discussed in financial planning guides, but it matters. Many business owners find the transition after a sale harder than expected — not financially, but personally. The identity, purpose, and structure that came with running a business disappears overnight. The investors who navigate this best tend to be those who have a clear plan for what comes next before the sale completes, not after.
Whether that is another business, a portfolio of angel investments, a family office structure, or a shift to philanthropy — having a framework ready makes the financial decisions easier too.