Business Relief and Inheritance Tax
How Business Property Relief Works - and What Is Changing
Business Relief — formerly known as Business Property Relief — is one of the most significant reliefs available within the UK inheritance tax framework. For business owners, it can substantially reduce or eliminate the inheritance tax charge on qualifying business assets, protecting trading businesses from the forced disposals that a large tax liability can otherwise cause.
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But the relief is changing. Reforms confirmed in the Autumn Budget 2024 will take effect from April 2026, introducing a cap on the amount of business property that qualifies for full relief and altering the treatment of certain asset classes. For business owners and their advisers, understanding both the current position and the forthcoming changes is now an essential part of estate planning.
What Business Relief Does
Business Relief reduces the taxable value of qualifying business assets for inheritance tax purposes. The reduction is either 100% — eliminating the IHT charge entirely on the qualifying asset — or 50%, depending on the nature of the asset held.
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At 100% relief, a qualifying trading business worth £3 million would pass to beneficiaries with no inheritance tax liability attached to it. That represents a saving, at current rates, of up to £1.2 million. The significance of the relief to family business succession planning is difficult to overstate.
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The relief applies to transfers on death and, subject to conditions, to lifetime gifts. It has been a cornerstone of business succession and estate planning for decades.
What Currently Qualifies
Business Relief is available on a range of assets, subject to qualifying conditions. The main categories are:
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A sole trader business or interest in a partnership.
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Shares in an unquoted trading company, including AIM-listed shares.
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Shares in a quoted trading company where the transferor has voting control.
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Certain assets used in a qualifying business, including land, buildings and machinery, where held outside the business.
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The two-year ownership requirement applies in all cases — the asset must generally have been owned for at least two years before the transfer for relief to be available.
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Critically, the relief applies to trading businesses, not investment businesses. A company whose activities consist wholly or mainly of holding investments — including property investment — does not qualify. Where a business has both trading and investment activities, HMRC will assess whether trading predominates. This is an area where careful structuring and professional advice can make a material difference to whether relief is available.
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Excepted assets – assets held within the business that are not used for trading purposes – are also excluded from relief. Surplus cash, non-trading property or personal assets held within a company may reduce the proportion of the business that attracts relief.
The April 2026 Reform
From April 2026, the Business Relief framework changes in ways that affect planning for many business owners.
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The principal change is the introduction of a £2.5 million cap on assets qualifying for 100% relief. Above that threshold, the rate of relief reduces to 50%.
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In practice, this means:
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The first £2.5 million of qualifying business assets continues to attract 100% relief — no IHT liability.
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Business value above £2.5 million is reduced by 50% before IHT is calculated — an effective rate of 20% on that excess.
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AIM-listed shares, which previously attracted 100% relief without a cap, are restricted to 50% relief regardless of value.
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Where assets are held jointly between spouses or civil partners, the £2.5 million threshold is available to each, providing a combined allowance of up to £5 million at 100% relief before the 50% rate applies.
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For a business owner with a trading company worth £4 million, the practical effect is significant. Under the pre-2026 rules, the full value would pass free of inheritance tax. Under the new rules, £1.5 million of that value attracts only 50% relief — giving a taxable amount of £750,000 and a potential IHT liability of £300,000 on that portion alone.
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These figures will vary considerably depending on the structure of the business, the ownership arrangements, the assets held and whether spousal allowances are available. They illustrate, however, why a business estate plan that was appropriate before April 2026 may require review.
The Interaction With Pension Planning
Business Relief and pension planning have historically operated as complementary strategies within a well-structured estate plan. Business assets attracted relief on death, while pension funds sat entirely outside the taxable estate — providing liquidity and flexibility alongside the business interests.
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The proposed inclusion of pension funds within the inheritance tax calculation from April 2027 changes that relationship. Where an estate previously relied on both Business Relief and pension exclusion to manage its overall IHT exposure, the combined effect of the April 2026 BPR cap and the April 2027 pension changes may produce a materially higher tax liability than existing plans anticipate.
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For business owners with both significant trading assets and substantial pension funds, an integrated review of the estate — considering both reliefs together rather than separately — is now particularly important.
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Our guide to Pension Tax Relief addresses the pension dimension in detail. Our guide to Agricultural Pension Relief is relevant where agricultural assets are also held alongside business interests and pension funds.
Planning Considerations for Business Owners
The reforms make timing, structure and documentation more important than they have been previously. The areas most worth considering include:
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Ownership Structure
How shares or business interests are held, and between whom, affects the reliefs available and the thresholds that apply. Spousal ownership structures, in particular, may allow the combined £5 million threshold to be used effectively.
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Excepted Assets
Surplus assets held within the business that do not contribute to trading activity reduce the proportion that attracts relief. Reviewing what the company holds and whether restructuring is appropriate can improve the relief position.
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Lifetime Planning
Business Relief is available on lifetime gifts as well as transfers on death, subject to the donor surviving seven years and the asset continuing to qualify at the date of the transfer. Lifetime gifting of business interests, where appropriate, may form part of a broader estate reduction strategy.
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Liquidity Planning
Where the April 2026 cap means a residual IHT liability will arise on business assets, planning for how that liability will be met — without requiring a forced sale of business interests — becomes relevant. Whole-of-life assurance written in trust is one established mechanism for addressing this.
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AIM Portfolios
The reduction of AIM relief to 50% across all values significantly changes the calculus for those who have used AIM shares specifically for their IHT planning characteristics. Existing AIM portfolios should be reviewed in light of the new rate.
How Wills, Tax & Trusts Ltd. Can Help
Ray L. Best and the team at Wills, Tax & Trusts work with business owners and their professional advisers to assess the inheritance tax position of trading businesses, identify where Business Relief applies and where it does not, and develop planning strategies that reflect the changing legislative landscape.
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This begins with a clear-eyed review of the business, its assets, the ownership structure and the broader estate — and results in practical, documented recommendations rather than generic advice.
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If you would like to discuss your business's position in light of the April 2026 changes, we are available to help.