Selling a Business: Financial Planning for the Post-Sale Windfall

For many business owners, the sale of their company is the financial event of a lifetime — the culmination of years or decades of effort, risk, and sacrifice. A successful exit can deliver millions of pounds in proceeds. Yet the months immediately following completion are when a disproportionate amount of that value can be lost: to unnecessary tax, poor investment decisions made in haste, lifestyle inflation, family pressure, or simple inertia while proceeds sit in a current account.

This article addresses the financial planning priorities for business owners and entrepreneurs in the aftermath of a sale, with particular focus on internationally mobile clients who may face multi-jurisdictional tax and structuring issues.

Wealth management and investment involve risk. The value of investments can fall as well as rise. Tax rules change. This article is general guidance only — not advice specific to your circumstances.

Pre-Sale Planning Is the Ideal Starting Point

Before this article can be fully effective, it is worth noting: the best time to plan for post-sale wealth management is before the sale, not after. Pre-sale planning can deliver significantly better outcomes through:

• Business Asset Disposal Relief (BADR): Formerly Entrepreneurs' Relief, BADR reduces the CGT rate on the first £1 million of qualifying lifetime gains. The rate has risen in steps: 10% to April 2025, 14% in 2025/26, and 18% for 2026/27 onwards. If you plan to sell in the current or next tax year, ensure your qualifying conditions are met — particularly the two-year ownership and employment/directorship requirements.
• Residency planning: CGT rates on business disposals are lower outside the UK. A business owner who becomes genuinely non-UK resident before a disposal may not be subject to UK CGT (subject to the temporary non-residence rules, which apply for the first five tax years of non-residency). This is a legitimate planning point but requires specialist advice and must be done correctly — HMRC scrutinises residency changes around major disposals closely.
• Spouse and family planning: Gifting shares to a spouse (or putting shares into a family investment company) before sale can double the BADR limit and use lower-rate taxpayers' CGT annual exemptions.
• EIS/SEIS reinvestment relief: Reinvesting gains into qualifying EIS companies defers or eliminates CGT, though at the cost of a relatively illiquid, higher-risk investment.

If a sale is imminent and pre-sale planning has not been done, professional advice should still be taken urgently — there may still be options.

Understanding Your Net Proceeds

A sale headline price and the money you actually receive can differ substantially:

CGT. At current 2026/27 rates: 18% (basic rate) or 24% (higher/additional rate) for most capital assets. BADR reduces this to 18% in 2026/27 on qualifying gains up to the lifetime limit (£1 million).

Deferred consideration. Earn-out arrangements tie a portion of consideration to future business performance. This money may come over three to five years, with associated tax treatment that is often more complex than a clean completion payment.

Warranties and indemnities. A portion of sale proceeds may be held in escrow pending satisfaction of warranty claims. This money is not yours until the escrow period expires (typically 12–24 months).

Professional fees. M&A advisers, solicitors, tax advisers, and accountants will take a proportion. Budget 2–4% of deal value for professional costs on a mid-sized transaction, potentially more.

Loan repayments. If the business carried any personal guarantees or director's loans, these may need to be settled at completion.

The net cash you actually receive on completion may be 60–75% of headline price. Model this carefully before making plans.

The First 90 Days: Immediate Financial Priorities

Park proceeds safely. Large cash sums need a temporary home. Spread across multiple FSCS-protected accounts (£120,000 per institution per person since 1 December 2025) for deposits under that level; note that the FSCS temporary high balance protection of up to £1 million for six months can cover proceeds of a property or business sale. Use money market funds or short-term gilts for larger or longer-term sums. Do not leave very large amounts in a single bank deposit.

Tax payment planning. CGT on a 5 April year-end disposal is due by 31 January the following year. On a 6 April–31 December disposal, CGT is also due by 31 January the following year. On a January–5 April disposal, payment comes in January two years later. Know your payment date and reserve accordingly — HMRC charges interest and penalties on late payment.

Avoid large irreversible financial decisions for at least six months. The psychological transition out of running a business is significant. Many former business owners report wanting to redeploy capital quickly — buying another business, making angel investments, buying property. These are not wrong decisions in themselves, but should be made deliberately after a proper planning period, not within weeks of completion.

Take stock. What are your actual financial goals now? Retirement at 55? Building a philanthropic foundation? Travelling? Funding a new venture? The answer shapes every subsequent financial decision.

Tax Planning After the Sale

Income Tax

Proceeds from a genuine business sale are a capital gain, not income. However, if any part of your proceeds is treated as income (for example, consultancy fees during a transition period, or PAYE-taxable retention bonuses), income tax and NI apply.

Investment Returns Going Forward

Once proceeds are invested, returns will be subject to income tax (on dividends and interest) and CGT (on gains). As of 2026, after the near-elimination of the CGT annual exempt amount (now £3,000), this matters much more than previously.

Pension Contributions

A sale triggers the ability (and need) to maximise pension contributions:

• You may have significant unused pension annual allowance from previous years (carry-forward allows up to three years' unused allowance on top of the current year's £60,000).
• Pension contributions from a company (employer) rather than personally can be more tax-efficient — relevant if you retain a consultancy vehicle or a new company.
• At current tax rates, pension relief at 45% (additional rate taxpayer) makes pension contributions extraordinarily effective: a £40,000 personal contribution is subsidised by up to £18,000 of tax relief.

EIS and SEIS Reinvestment

Gains can be deferred indefinitely by reinvesting into qualifying EIS companies (but not SEIS after the initial investment window). EIS companies then attract their own tax reliefs. This is appropriate for some clients but not others — EIS companies are illiquid and higher-risk. Do not reinvest into EIS purely for the tax relief.

Offshore Bonds

For proceeds likely to be invested long-term or where the owner may relocate abroad, offshore investment bonds offer tax deferral on investment returns — gains and income roll up without annual tax charge, and gains are assessed when surrendered (at potentially lower future rates). See our guide to offshore bonds for a detailed explanation.

Investment Strategy for a Business Sale Windfall

A business owner's relationship with their wealth before sale is typically highly concentrated — most net worth in a single illiquid private asset. After sale, the priority is often diversification, income, and capital preservation alongside growth.

Asset allocation. A post-sale portfolio might reasonably include global equities (for long-term growth), bonds and fixed income (for stability and income), property (through REITs or direct investment), and alternative investments (private equity, infrastructure, commodities). The right balance depends entirely on personal circumstances.

Liquidity. Keep enough liquid capital to cover living costs and planned expenditure for at least 12–24 months without needing to sell investments at potentially inopportune times.

Inflation protection. Inflation erodes real wealth over time. A significant allocation to real assets (property, infrastructure, equities) is typically part of any long-term inflation-conscious strategy.

Risk calibration. After a sale, many clients experience a shift in risk attitude — having crystallised significant wealth, the priority is not to lose it. This is legitimate but must be balanced against the reality that excessive caution (all cash or low-risk bonds) creates its own risk: failure to grow wealth in real terms over decades.

Phased investment. Investing the full proceeds immediately into markets exposes the portfolio to short-term volatility risk. Phasing investment over 12–18 months (a form of pound-cost averaging) is a commonly used approach to reduce this timing risk.

Family and Succession Planning

A major sale changes family wealth dynamics. Key actions:

Update your will. Your estate is now dramatically different. The will may need complete revision, as may any trust structures.

IHT planning. Business Property Relief (BPR) — which can relieve qualifying business assets from IHT (100% relief now applies only up to a £2.5 million allowance per person from 6 April 2026, transferable between spouses, with 50% relief above that) — ceases to apply once the business is sold. Your estate is now exposed to IHT on the proceeds. Urgently review your IHT position and consider structures including trusts, gifting, and BPR-qualifying reinvestments.

Spouse and family planning. Tax-efficient transfer of assets to a spouse and/or family members (within annual exemptions and using family investment company structures where appropriate) can significantly reduce the overall family tax burden.

Family governance. For larger windfalls, consider establishing formal family governance arrangements to manage wealth across generations — investment policy statements, family meetings, next-generation financial education.

Psychological Transition

The financial aspect of life after selling a business is often less challenging than the personal and psychological dimension. Many former business owners report loss of identity, purpose, and structure. Some return to employment or start a new venture within 18–24 months.

Financial planning works best when it is connected to a clear life plan. Before investing significant sums, take time to establish what you actually want the money to do for you.

How Global Investments Can Help

Global Investments works with entrepreneurs and business owners at every stage of business exit planning, from pre-sale structuring through to post-completion wealth management. Our advisers understand the specific financial and emotional dynamics of a major liquidity event.

Services include pre-sale tax planning, CGT optimisation, pension and EIS strategies, investment portfolio construction, offshore bond and trust structuring, IHT planning, and long-term family wealth management.

For internationally mobile business owners, we provide multi-jurisdictional financial planning expertise across the key markets in which Global Investments operates.

Speak with a Global Investments adviser before, during, or after your sale for a confidential consultation.

This article is for general information only and does not constitute tax or financial advice. Tax rules are subject to change. The value of investments can fall as well as rise. Business exit transactions require specialist legal and tax advice.