Business Property Relief (BPR) is one of the most valuable reliefs available in the UK inheritance tax system. When it applies, it can reduce the IHT charge on a qualifying business asset by 100% — effectively removing it from the taxable estate entirely. For business owners, this single relief can mean the difference between a business surviving to the next generation and being broken up to pay an IHT bill.
However, BPR was subject to significant reform in the Autumn Budget 2024, with changes taking effect from April 2026. Understanding the current rules — and how planning may need to adapt — is essential for any business owner or investor with BPR-qualifying assets.
What Is Business Property Relief?
BPR was introduced in 1976 to prevent the forced sale of family businesses on the death of the owner to pay inheritance tax. It provides either 100% or 50% relief from IHT on qualifying business property.
100% relief applies to:
- An interest in a business (including a sole trader business or interest in a trading partnership)
- Unquoted shares in a company (including AIM-listed shares, which are treated as unquoted for BPR purposes)
- Unquoted securities (debentures, loans) in a company, where the holder controls the company
50% relief applies to:
- Shares or securities in a quoted company, where the holder controls the company
- Land, buildings, or machinery owned by the deceased and used wholly or mainly in a business controlled by the deceased, or in a partnership in which the deceased was a partner
The 50% category is less commonly used but relevant where, for example, a business owner holds the trading premises personally and lets them to their own company.
The Two-Year Ownership Requirement
To qualify for BPR, the asset must have been owned by the deceased for at least two years immediately before death. There is no averaging or partial relief for ownership of less than two years — the full two years must have elapsed.
This creates an important planning discipline: BPR-qualifying assets should be acquired and held for at least two years before the rule is expected to be needed. This is not always possible, particularly if health deteriorates rapidly, but for clients who are planning well in advance of anticipated need, establishing qualifying assets early is essential.
There are some replacement asset rules that allow a period of ownership of a previous qualifying asset to "count" towards the two-year period for a replacement asset, provided the replacement was made within three years of disposing of the original.
The Trading Requirement
This is the most complex and frequently litigated aspect of BPR. The relief is only available for trading businesses or companies — not for businesses or companies whose activities are wholly or mainly investment in nature.
HMRC and the courts apply a "mainly" test: if the business is mainly trading (by reference to turnover, profits, assets, and management time), BPR is available. If it is mainly investment (holding rental properties, making loans, or managing securities), BPR is denied.
Specific Exclusions
The following activities are treated as investment for BPR purposes and do not qualify:
- Property letting: a business that rents property (whether residential or commercial) is an investment business. Even where a property investor is highly active in managing their portfolio, HMRC treats the activity as investment, not trade. This is one of the most common planning misconceptions — a large property portfolio does not attract BPR
- Making investments: a company that holds a portfolio of quoted shares or bonds is an investment company
- Holding cash and near-cash: excess cash held in a company can be treated as investment assets, reducing the proportion of the company that qualifies for BPR
Mixed Trading and Investment Companies (Hybrid Structures)
Where a company has both trading and investment activities, a proportionate approach applies. Only the trading element qualifies for BPR; the investment element is denied relief.
For holding companies with trading subsidiaries, the analysis looks at the economic substance of the group: if the holding company's primary activity is to manage equity participations in trading subsidiaries, it may qualify. If the primary activity is to hold investment assets alongside subsidiary interests, it may be partly or wholly denied.
This is an area where the facts matter considerably. HMRC investigates BPR claims on larger estates, and the burden of proof is on the executor to demonstrate that the business qualified.
AIM Shares and BPR
Shares listed on the Alternative Investment Market (AIM) are treated as unquoted shares for BPR purposes. This creates a significant IHT planning opportunity: AIM shares held for at least two years typically qualify for 100% BPR.
A number of specialist investment managers offer dedicated AIM IHT portfolios — diversified portfolios of 25–35 AIM-listed companies selected specifically because they are believed to qualify for BPR. The appeal is:
- Speed: BPR applies after two years, significantly faster than the seven-year rule for outright gifts
- Retained control: unlike gifting, the investor retains ownership of the assets and can access or change the portfolio
- Flexibility: unlike trusts, there are no 10-year anniversary charges or complex trust administration
The risks are material:
- AIM shares are volatile and illiquid: AIM is a smaller companies market; share prices can fall sharply, and bid-ask spreads can be wide. A portfolio that falls 40% in value saves less IHT than the cost of the fall
- BPR is not guaranteed: HMRC may challenge whether specific companies qualify; if a company changes its business model, it may cease to qualify
- Concentration: even a 30-stock portfolio is concentrated by institutional standards; a single large AIM business failure can materially affect returns
AIM IHT portfolios are appropriate for HNW investors who can genuinely accept equity risk and liquidity constraints, and who have a clear IHT planning objective that justifies the risk.
The Budget 2024 Reform: A Material Change
The Autumn Budget 2024 introduced the most significant reform to BPR in decades. With effect from 6 April 2026, the following changes apply:
The £2.5 Million Cap
For deaths on or after 6 April 2026:
- The first £2.5 million of BPR-qualifying assets (including unlisted company shares) continues to receive 100% relief
- Assets above £2.5 million receive only 50% relief (rather than 100%), giving an effective IHT rate of 20% on the excess
The cap was originally announced in the Autumn Budget 2024 as £1 million, but the government raised it to £2.5 million per estate (per individual) in December 2025. The £2.5 million allowance is transferable between spouses and civil partners, so a married couple can pass up to approximately £5 million of qualifying business and agricultural property at 100% relief. Note that AIM-listed and other unlisted shares qualify for 50% relief only and do not draw on the £2.5 million allowance.
This is a fundamental change. Previously, a business worth £10 million would attract 100% BPR on the entire value — zero IHT. Under the new rules, the same business attracts:
- 100% BPR on the first £2.5 million = £0 IHT on that portion
- 50% BPR on the remaining £7.5 million = £3.75 million left in the estate = £1.5 million IHT at 40% (an effective 20% rate on the £7.5 million above the cap)
The effective IHT on a £10 million business jumps from zero to £1.5 million.
The £2.5 million threshold is shared between BPR and Agricultural Property Relief (APR), which was reformed at the same time.
Planning Implications
The reform significantly changes the economics of:
- AIM IHT portfolios: AIM and other unlisted shares now receive 50% relief only, and do not benefit from the £2.5 million 100% allowance. The tax saving is still real but half what it was. The risk/return trade-off requires reassessment
- Business succession planning: business owners should review whether lifetime gifts (with potential BADR on sale) or BPR on death is now more efficient for their specific business value
- Trust planning: placing BPR assets in trust within the £2.5 million cap may be more efficient than holding them directly; planning pre-death with qualified advisers is now more urgent for estates above £2.5 million
- Business structure: where trading and investment activities are mixed, the composition of the business matters more now that partial BPR (above the cap) is only 50%
BPR and Trusts
BPR-qualifying assets can be placed into a discretionary trust during the settlor's lifetime. If the assets qualify for BPR, the lifetime charge on establishment (which would otherwise be 20% on the excess above the NRB) may be reduced or eliminated by BPR.
This creates an opportunity to transfer large BPR-qualifying assets (such as a business interest) into trust without an immediate IHT charge, outside the estate immediately. The seven-year clock for PETs does not apply in the same way for BPR assets placed into trust.
However, BPR must continue to apply to the assets while they are in the trust for the relief to be maintained. If the business is sold and the proceeds held as cash within the trust, BPR is lost — and the trust's 10-year anniversary charge at 6% applies to the full fund value above the NRB.
How Global Investments Can Help
Business Property Relief planning requires careful analysis of whether your business truly qualifies, how the new cap affects your position, and what combination of lifetime planning and death planning is most efficient.
Global Investments works with business owners, entrepreneurs, and those with AIM portfolios to review their BPR position in light of the April 2026 changes, and to ensure that estate plans are updated to reflect the new reality.
Tax rules change, and the information in this article reflects the law as at June 2026. This article is provided for general information only and does not constitute tax or legal advice. Always take qualified professional advice before making estate planning decisions.
To discuss your business succession and IHT planning, please contact our team.
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.