How Business Property Relief Protects Family Firms
From 6 April 2026, UK Business Property Relief is capped at £2.5 million. Understand the new rules, 50% relief thresholds, and how to protect your family business.
Key Takeaways: BPR Changes From 6 April 2026
The landscape of UK inheritance tax planning changes significantly from 6 April 2026. The historic structure of unlimited 100% relief is replaced by a capped system that directly affects higher-value trading enterprises.
- A combined £2.5 million allowance now applies to standard Business Property Relief (BPR) and Agricultural Property Relief (APR).
- Assets within the £2.5 million allowance continue to receive 100% relief, resulting in an effective tax rate of 0%.
- Qualifying assets value exceeding the £2.5 million threshold receive 50% relief, creating an effective tax rate of 20%.
- Unused portions of the personal £2.5 million allowance can be passed to a surviving spouse or civil partner.
- AIM-listed shares and other non-listed securities are excluded from the 100% allowance and receive a flat 50% relief rate.
Can Business Property Relief reduce the Inheritance Tax on my family business?
Yes, Business Property Relief (BPR) still substantially reduces Inheritance Tax (IHT) on family businesses, but the relief is subject to a new £2.5 million limit starting on 6 April 2026. Business assets exceeding this £2.5 million threshold will generally attract an effective inheritance tax rate of 20% rather than being completely exempt. This means that while smaller family firms remain fully protected, larger commercial estates face new tax obligations.
What is Business Property Relief (BPR)?
Business Property Relief is a statutory UK inheritance tax relief designed to prevent family-owned trading businesses from being broken up or sold to pay death duties. Historically, the relief provided an unlimited 100% exemption from inheritance tax for qualifying business assets, ensuring a smooth transition of trading operations to the next generation without immediate financial strain.
What changed on 6 April 2026?
Historically, business owners could pass on a qualifying trading company of any value entirely free of inheritance tax. From 6 April 2026, HM Revenue and Customs restricts this unlimited treatment by introducing a tiered limit on combined BPR and Agricultural Property Relief (APR) claims.
| Value of Qualifying BPR/APR Assets | Rate of Relief | Effective IHT Rate |
|---|---|---|
| First £2.5 million | 100% Relief | 0% |
| Above £2.5 million | 50% Relief | 20% |
The statutory framework requires the £2.5 million allowance to be split proportionally across BPR and APR assets when both are held within the same estate. Any business asset value exceeding this limit is taxed at the default inheritance tax rate of 40% but with a 50% reduction applied to that portion.
What are the BPR qualifying conditions?
Although the tax thresholds have changed, the fundamental qualitative criteria used by HM Revenue and Customs to determine eligibility for BPR remain the same.
- The business must be a trading business, meaning its activities cannot consist mainly of holding land, making investments, or dealing in securities.
- The deceased must have owned the qualifying business property continuously for at least two years prior to their death.
- The asset must fall into an eligible class, such as a sole trader business, a share in a partnership, or shares in an unquoted trading company.
How are AIM shares treated under the new BPR rules?
Shares on the Alternative Investment Market (AIM) are treated less favourably under the revised system. These shares no longer qualify for the £2.5 million allowance at 100% relief.
AIM-listed shares and other unlisted securities receive a flat 50% relief regardless of their total value. Consequently, any investment in these assets will carry an effective inheritance tax rate of 20% from the very first pound invested.
Can you transfer the £2.5m allowance to a spouse?
Yes, any unused portion of the £2.5 million allowance can be transferred to a surviving spouse or civil partner upon death. This rule allows a married couple to shelter up to £5 million in qualifying commercial assets from inheritance tax.
The transfer mechanics mirror the existing rules for Nil-Rate Bands. If the first spouse leaves their entire business interest to their survivor, their £2.5 million allowance is preserved and added to the survivor's allowance for use in the future.
How do the 10-year instalment payments work?
Where a business estate incurs an inheritance tax liability under the new rules, executors can spread the tax payment over ten annual instalments. Under current HM Revenue and Customs rules, these instalments are interest-free.
This instalment structure reduces the risk of cash-flow insolvency for trading businesses. It ensures that executors do not have to sell off business assets hurriedly to meet an immediate tax demand.
Worked Example: IHT calculation on a £4m business
To understand how the 2026/27 rules apply in practice, look at a qualifying family trading business valued at £4 million.
- First £2,500,000 of the business value: Receives 100% relief, resulting in £0 inheritance tax.
- Remaining £1,500,000 of the business value: Receives 50% relief, meaning £750,000 is subject to the standard 40% tax rate.
- Tax calculation: 40% of £750,000 results in a total inheritance tax bill of £300,000.
- The standard £325,000 personal Nil-Rate Band and £175,000 Residence Nil-Rate Band are preserved to reduce taxes on other assets, such as the family home.
Practical planning tips to protect your family business
Business owners must adapt their long-term succession strategies to align with the post-April 2026 tax framework. Taking proactive steps can minimise tax exposure.
Owners should obtain professional business valuations to check if their assets exceed the £2.5 million threshold. If necessary, you can restructure your business holdings to share ownership with a spouse, allowing you to use two allowances. Additionally, plan for 6 April 2027, when pension pots will also be brought into the inheritance tax net.
Does BPR apply to agricultural property (APR) in the UK?
No, BPR and APR are separate reliefs, but they share the same £2.5 million cap from 6 April 2026. If an estate holds both commercial business assets and agricultural land, the £2.5 million limit of 100% relief is split proportionally between them.
What assets are excluded from Business Property Relief?
BPR does not cover businesses that deal primarily in land, share dealings, or investment management. It also excludes 'excepted assets' like surplus cash or personal properties held within a trading company that are not used for active trade.
How does the £2.5 million allowance apply to trusts?
Trusts have their own separate £2.5 million allowance framework for business assets. However, the interactions with personal allowances are complex and require specialist trust and estate planning advice.
Can I still get 100% inheritance tax relief on my business after April 2026?
Yes, you can still get 100% inheritance tax relief, but only if the total value of your qualifying business and agricultural property is £2.5 million or less. Any value above this amount will only qualify for 50% relief.