For entrepreneurs, senior executives, and investors who have built or backed private companies, the shareholding can represent the largest single component of their net worth. The problem is that it is also, by definition, illiquid — unlike a listed share, you cannot simply sell when you choose, at a transparent market price, with settlement in days.
Planning the realisation of value from a private company shareholding is one of the most technically complex and financially significant exercises in wealth management. Done well, it can crystallise decades of value creation tax-efficiently and fund a diversified financial future. Done poorly, it can generate a large and avoidable tax bill, leave the seller exposed to unnecessary deal risk, or deliver proceeds at below-market value.
The Core Challenge: Concentration and Illiquidity
The two principal risks of a large private company shareholding are concentration (most of your wealth is in one asset, in one sector, exposed to a small number of key people) and illiquidity (you cannot reduce your exposure without finding a buyer and completing a transaction).
These risks are often accepted during the period of value creation — you take concentration risk because you believe in the business, and illiquidity is accepted as the price of private ownership. But as the business matures, as wealth grows, and particularly as retirement or succession approaches, the case for realising value and diversifying becomes compelling.
The challenge is achieving a realisation on terms that:
- Reflect the true value of the business
- Minimise the tax payable on the gain
- Can be completed without disrupting the business's operations or damaging relationships
Tax Framework: Business Asset Disposal Relief
For UK taxpayers, Business Asset Disposal Relief (BADR — formerly Entrepreneurs' Relief) remains available on qualifying disposals of shares in trading companies, subject to conditions. BADR provides a reduced CGT rate of 18 per cent on qualifying gains for 2026/27, up to a lifetime limit. (The rate has risen in stages: it was 10% until April 2025, 14% in 2025/26, and increased to 18% from 6 April 2026.)
The lifetime limit has been subject to repeated reduction: cut from £10 million to £1 million in 2020. As of June 2026, the limit remains £1 million, meaning BADR is a useful relief for smaller exits but relatively immaterial for large realisations. On a £5 million gain, the BADR saving (18 per cent vs the standard 24 per cent rate) on the first £1 million is £60,000 — valuable, but a small fraction of the total tax on the exit.
For very large gains, the focus shifts from BADR to structuring and timing to manage exposure to the standard CGT rate.
Staged Disposal and CGT Management
Rather than selling a large stake in a single transaction, a staged disposal over multiple tax years can spread the gain across years, potentially maintaining annual exemption availability (currently £3,000, a historically low level) and, more importantly, managing the timing of tax payments.
However, the value of staging depends on market conditions and deal structure. In a competitive M&A process, a buyer will typically want to acquire a controlling stake or the whole company in a single transaction — staged sales to a third-party buyer are often impractical. Staged disposal is more feasible where:
- The seller is retaining a portion of the business and the staged sale is to the company itself (buyback), to other shareholders, or to an institutional investor
- The exit is to an Employee Ownership Trust (see below)
- The sale is to a management team or other known parties over a structured timeframe
Business Holdover Relief and Gift Strategies
If the intention is to pass shares to family members (including adult children) rather than sell to a third party, holdover relief under section 165 TCGA 1992 can defer CGT on the gift. The recipient takes the shares at the original cost base, and CGT crystallises when they eventually dispose of them.
The benefit: no immediate CGT on the gift. The consideration: the recipient inherits the deferred gain, and both parties need to sign the holdover election on the appropriate tax return.
Holdover relief is available on gifts of shares in qualifying trading companies. It requires the giftor to actually give up ownership and control — a gift with reservation (where the donor retains benefit) does not qualify and will be ignored for IHT.
Employee Ownership Trust Exit
The Employee Ownership Trust route (described in more detail in our guide to business succession) provides a complete CGT exemption for the seller, provided the EOT acquires a majority stake. For sellers who are comfortable with employee-beneficiary ownership and are not seeking to pass the business to specific family members, this is currently one of the most tax-efficient exit routes available.
The proceeds are typically paid in instalments from business cash flow over a period of years, so the EOT exit is not suitable for sellers who need immediate full liquidity. But for founders who are patient and value legacy as well as financial return, it is a compelling option.
Zero-Cost Collar and Other Hedging Techniques (Primarily US Context)
In the US market, financial hedging techniques such as the zero-cost collar allow a holder of a publicly listed stock concentration to limit downside risk without an immediate taxable sale. The collar involves buying a put option (floor on the downside) and simultaneously selling a call option (cap on the upside) for the same cost — hence "zero cost." This locks in a range of outcomes without triggering a disposal.
Zero-cost collars work for listed securities with available options markets. For private company shares, options markets do not exist and this technique is generally unavailable. It becomes relevant only after a company has listed (IPO) — at which point the collar can protect the value of a locked-up position through the post-IPO lockup period.
Exchange funds (also primarily a US structure) allow a holder of a concentrated public equity position to contribute shares into a diversified fund pool without triggering immediate tax, receiving in exchange a diversified interest in the pool. Not available in the UK in a direct equivalent form.
Sell-Side Process Management
For the largest private company realisations, managing the sell-side process properly is as important as any tax structure. Key considerations:
Valuation: independent professional valuation is essential to ensure you are not selling below value. Buyers will undertake extensive due diligence; sellers should prepare equivalently (vendor due diligence, clean data rooms, management accounts in order).
Transaction structure: cash versus deferred consideration (loan notes, earn-outs) has significant tax implications. Loan notes received in exchange for shares can defer CGT until the notes are redeemed, potentially spreading the tax. Earn-outs are taxed on an accruals basis for the most part. The structure matters.
Warranties and indemnities: sellers typically provide warranties about the business's condition. Warranty and indemnity (W&I) insurance is available to back these and reduce escrow requirements, improving the seller's net proceeds.
Representations: what you say (and do not say) in a sale process has legal consequences. Always instruct experienced M&A solicitors.
Post-Exit Wealth Management
The period immediately after a business exit is one of the most critical in wealth planning. A large sum of cash arrives — possibly for the first time in the seller's financial life — and must be invested, structured, and tax-planned efficiently.
Key priorities in the months following exit:
- Establish a multi-asset investment portfolio with appropriate diversification
- Review inheritance tax position (the IHT relief on Business Property may have been covering the bulk of the estate — it is gone on exit)
- Consider pension contributions (if not already maxed)
- Review offshore structures if applicable
- Establish a charitable giving strategy if desired
Investments can fall as well as rise in value. Tax rules change; the reliefs described here (BADR, holdover relief, EOT exemption) are subject to change and depend on individual circumstances. Professional legal and tax advice is essential in any business exit transaction.
How Global Investments Can Help
Global Investments advises business owners and entrepreneurs through business exit events — from early planning to post-exit wealth structuring. We help you understand the tax landscape, model different exit structures and their after-tax outcomes, and build an investment strategy for the proceeds that reflects your goals, risk appetite, and tax position.
A business exit is often a once-in-a-generation financial event. Getting the planning right before completion is far easier than trying to restructure afterwards. Contact us to begin a confidential conversation.
This article is for general information only and does not constitute financial, legal or tax advice. Rules, prices and regulations change; verify current requirements with a qualified adviser before acting.