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When the Exit Creates the Problem: Why Business Owners Need to Plan for Inheritance Tax Before They Sell 

Wednesday, 20 May 2026

When the Exit Creates the Problem: Why Business Owners Need to Plan for Inheritance Tax Before They Sell 

For founders exiting a business worth £5 million or more, the sale is often the most significant financial event of their lives. Years of risk, reinvestment and hard work are finally converted into liquidity. But without planning, that same liquidity can create a serious inheritance tax problem that did not exist the day before completion. 

This is the challenge we see regularly at First Wealth Private Office: the sale that unlocks freedom can also expose the next generation to a substantial and avoidable tax bill. 

The Shift from Sheltered to Exposed 

While a founder holds qualifying shares in a trading company, those shares typically benefit from Business Property Relief, reducing or eliminating their inheritance tax liability. From 6 April 2026, full 100% relief is capped at £2.5 million of combined business and agricultural property, with qualifying value above that threshold attracting only 50% relief, producing an effective 20% IHT charge. Married couples and civil partners can combine their allowances, sheltering up to £5 million at 100%. 

But here is the critical point for exiting founders: the moment business assets are sold and converted into cash, investments or property, Business Relief falls away entirely. The full value of those proceeds sits inside the estate, exposed to inheritance tax at 40% above available nil rate bands. 

For a founder selling a business for £20 million, the swing in potential IHT liability can be dramatic. What was substantially sheltered one day becomes fully taxable the next. 

Planning Before the Sale, Not After 

The most effective legacy planning happens before completion, not after it. Once proceeds are cash in the bank, the options narrow. Before exit, there may be scope to: 

Restructure ownership ahead of sale. In some cases, founders can use holding company or family investment company frameworks to retain control while directing future growth to the next generation or into trusts. These structures need genuine commercial purpose and careful tax advice, particularly given tightened anti-avoidance rules around share exchanges and reorganisations, but when done properly they can be powerful. 

Use the tax-efficient window. Gifting qualifying business assets before sale, while Business Relief still applies, can be more efficient than gifting cash afterwards. The seven year clock on potentially exempt transfers starts ticking from the date of the gift, and if the assets still qualify for relief at that point, the IHT position on failure of the gift may be substantially better. 

Coordinate across the advisory team. Exit planning sits at the intersection of corporate finance, tax, legal and financial planning. The earlier these conversations happen in parallel, the better the outcome. Waiting until post-completion to engage a financial planner means working with a narrower set of tools. 

Beyond the Tax: Planning for Purpose 

Inheritance tax is only one dimension. A well-structured plan also addresses how proceeds are invested, what the founder and their family actually need to live well, how much can be gifted or placed in trust without compromising their own financial security, and what role pensions, insurance and other structures should play in the overall picture. 

At First Wealth Private Office, we lead with cashflow planning. Before making any structural decision, we model what the founder’s life costs, what they want it to look like, and how much is genuinely surplus. That clarity is what turns reactive tax mitigation into intentional legacy planning. 

The Bottom Line 

A successful exit creates liquidity. But liquidity without planning can weaken legacy. The goal is not just to sell well. It is to ensure the value created through a lifetime of work is held in the right structure, for the right people, with the right long-term purpose. 

The earlier the planning starts, the more options there are. If you are a business owner considering an exit in the next one to three years, now is the time to start that conversation. 

 

By:

Robert Caplan Co-Founder, First Wealth Private Office 

First Wealth Private Office works with business owners, families and senior professionals navigating complex wealth decisions. To explore how pre-exit planning could protect your legacy, contact Robert at robert@firstwealth.co.uk or visit firstwealth.co.uk/first-wealth-private-office-iht-clients. 

 

This article does not constitute tax, legal or financial advice and should not be relied upon as such. Tax treatment depends on the individual circumstances of each client and may be subject to change in the future. For guidance, seek professional advice. 

The Financial Conduct Authority does not regulate cashflow planning, estate planning or tax planning. 

This document is marketing material for a retail audience and does not constitute advice or recommendations. Past performance is not a guide to future performance and may not be repeated. The value of investments and the income from them may go down as well as up and investors may not get back the amount originally invested. 

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    This was a complex and important transaction for the shareholders and the business, and Bluebox’s expertise made all the difference. Their meticulous preparation, commercial acumen, technical supremacy and tireless dedication ensured we achieved an outstanding outcome with Ufenau. It has been a genuine pleasure working with a team that combines strategic thinking with an unwavering focus on delivering value for their clients.

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    It has been a real privilege working with the team at Bluebox over this last year or so. Bluebox’s attention to detail ensured that we were well prepared for when the business was taken to market and the sale process itself was managed expertly. Starting the process, I had no idea exactly what this would entail and the volume of work that has been produced by everyone and the result reached today is nothing short of brilliant.

    Hugh Morris, Former Client

    We are delighted with the services that Bluebox was able to offer. They showed an intimate knowledge of a deal cycle, managed a tight auction process and were highly communicative from the start. I would happily recommend Paul and his team to business owners contemplating a sale of their business in the next 24 months. Experience is key and this has paid off for us.

    Laurence Seward, Former Client

    Aligning ourselves early with Bluebox, and entrusting the team to guide us through their process proved to be a highly rewarding investment from all viewpoints. Bluebox’s support significantly enhanced both the value of our business and its ‘saleability’. I would highly recommend Bluebox to business owners contemplating an exit in the next two years. The earlier the engagement the better so far as I am concerned.

    Mike Minett, Former Client

    We began working with Bluebox in early 2015 through their Blue Diamond Programme, as we were contemplating an exit. We found that the process focussed our minds on the key areas of growth in the business, and prepared us well for the inevitable rigours of due diligence. During the sale process itself, the advice offered by the Bluebox team was invaluable. We found them to be helpful, straightforward and honest.

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    Alan Montgomery, Former Client

    I have experienced first hand the value that can be created through highly structured pre-sale planning. It amazes me that it is not something that everyone does. It is so disappointing to see around 90% of transactions collapse before they complete and pre-sale planning will not only enhance your price, but also significantly enhance your chance of a closed deal.

    James Caan, Investor

    We worked incredibly closely with our advisers who provided expert knowledge of the sale process with which we were not familiar. We were truly delighted with the results.

    Marten Nielson, Former Client

    We are delighted to announce the successful completion of our transaction with Sauter. The collaboration not only enhances our capabilities, but aligns perfectly with our vision for sustainable growth and innovation in the sector. Bluebox were exemplary in their advice throughout the process, and we would have not been able to achieve such a positive outcome without their support. We are grateful to have worked with them and would highly recommend them to any business owner contemplating their options.

    Kerry Overman, Former Client

    Truly delighted with the way my sale process was managed. The fact that the team I worked with achieved such a great multiple is testament to their experience and their ability to create some true competitive tension.

    James Averdieck, Gü, Former Client

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    Simon English, Former Client

    Bluebox provided invaluable advice in managing the negotiations with incoming investors. Their skills in handling these discussions were evident from the outset and the vital interface that they provided between the incumbent team and the incoming investors was truly beneficial.

    Henry Braham, Former Client

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    Paul Duckworth, Former Client

    Having tried to sell my business previously – and failed – I was only too aware of the importance of pre-sale planning. This is a talented team offering a service that most people find out about, but too late.

    Simon Hulme, Former Client

    Bluebox are a quality outfit. Their access to International acquirers and relationships with the highest quality domestic investors was impressive. My shareholders and I received excellent service from start to finish and it was refreshing to be dealing with a senior team throughout the sale exercise.

    Michael Clapper, Former Client

    I cannot recommend the team at Bluebox highly enough. Their expert guidance throughout the entire sale exercise resulted in my shareholders securing an excellent deal with which the entire team was delighted.

    Mark Rodol, Former Client

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    Steven Davies, Former Client

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