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From 6 April 2026, the government will change how Agricultural Property Relief (APR) and Business Property Relief (BPR) apply to Inheritance Tax (IHT). For family farms and owner-managed businesses, the key change is that 100% relief will be capped. A new combined allowance limits the amount eligible for 100% relief; any value above this allowance will generally receive only 50% relief, resulting in an effective 20% IHT charge on the excess (40% × 50%).
If you are a family business owner, farmer, or landowner, timely planning is essential. The best approach will depend on your ownership structure, will provisions, history of lifetime gifts, trusts, and liquidity.
What APR and BPR are (and how the 2026 cap works)
APR (Agricultural Property Relief)
APR can reduce the IHT value of qualifying agricultural property (often farmland and certain buildings used for agriculture), sometimes at 100%, depending on the asset and conditions.
BPR (Business Property Relief)
BPR can reduce IHT on qualifying business property (commonly shares in an unquoted trading company, interests in a business/partnership), historically often at 100% where conditions are met.
What changes from 6 April 2026?
A new £2.5 million allowance will apply to the combined value in an estate that qualifies for 100% APR and/or 100% BPR. Above that, 50% relief applies to a qualifying property that would previously have received 100%.
Practical meaning:
- If you die owning £6m of qualifying APR/BPR assets (ignoring other reliefs/bands), only £2.5m gets 100% relief. The remaining £3.5m gets 50% relief, so £1.75m becomes chargeable at 40% ⇒ £700,000 IHT (before nil-rate bands and other deductions).
Is the allowance transferable between spouses?
Yes. The reform document states that unused allowance can be transferred to a surviving spouse/civil partner from 6 April 2026, and that, where the first death occurred before 6 April 2026, the full allowance is assumed to be available to transfer.
Important: Transferability on death does not guarantee efficient use. Ineffective planning or mismatched ownership can waste allowances or result in unnecessary IHT liabilities.
Who is most exposed (scenarios + quick decision aid)
Quick exposure table (rule-of-thumb)
If you’re trying to judge whether the APR/BPR cap from 6 April 2026 is likely to affect you, start with a simple exposure check. If the total value of assets that would normally qualify for 100% APR and/or 100% BPR is below £2.5 million per person, you may still be able to keep most or all of that value at 100% relief (before considering nil-rate bands and other factors). Once your qualifying business and agricultural assets exceed £2.5 million per person, the cap becomes much more relevant because the value above the allowance generally only gets 50% relief, which can create an effective 20% inheritance tax exposure on that excess (40% IHT applied to half the value).
Your risk tends to increase further if you rely on AIM or other “not listed” shares as part of an IHT strategy, because the reform summary indicates those holdings are subject to 50% BPR in all cases, changing outcomes previously assumed to be full relief. Wills and ownership structure also become more consequential: if most qualifying assets sit in one spouse’s name or the will passes everything spouse-first, you can unintentionally concentrate value into the second estate and increase the slice that falls above the allowance. Finally, don’t assume a pre-April 2026 lifetime gift automatically sidesteps the cap—under the transitional rules, certain gifts (notably those made on/after 30 October 2024) can still be affected if the donor dies on/after 6 April 2026 within seven years, so any gifting plan needs to be stress-tested against death-after-6-April outcomes.
Decision tree (fast)
- Step 1: Will your combined qualifying APR/BPR assets exceed £2.5m per person by 6 April 2026?
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- No: focus on eligibility hygiene + will structure + records.
- Yes: go to Step 2.
- Step 2: Are assets split between spouses/partners (or concentrated in one name)?
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- Concentrated: consider aligning ownership and updating wills to maximise use of allowances.
- Already split: go to Step 3.
- Step 3: Is there a liquidity plan for IHT on the “50% relieved” slice?
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- No: model instalments + insurance + dividend/cash extraction strategy.
- Yes: go to Step 4.
- Step 4: Any lifetime gifts since 30 Oct 2024 or planned gifts?
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- Yes: assess the impact of the 7-year rule and post-6 April 2026 outcomes under transitional provisions.
Costs, deadlines, and risk flags (the bits that cause nasty surprises)
The key dates
- 30 October 2024: transitional rules point for certain lifetime transfers into the post-2026 regime.
- 6 April 2026: operative date for the cap and related changes.
Hidden risk: Gifts made before April 2026 may still be affected
A common misconception is “gift before 6 April 2026, and you’re safe.” The reform document describes transitional rules under which the operative date can apply to deaths on/after 6 April 2026, where lifetime gifts were made on/after 30 October 2024, and the transferor dies within 7 years.
In practical terms:
- If you make qualifying transfers during the transitional window and then die after the operative date (and within 7 years), the new allowance mechanics may affect the IHT calculation.
The 20% “effective IHT” problem
Where 50% relief applies, and the IHT rate is 40%, you can end up with an effective 20% charge on the value above the 100% allowance (ignoring bands/exemptions).
Paying by instalments can assist with cash flow.
The reform document also indicates an extension of the option to pay IHT by instalments (interest-free in the reform summary) to property eligible for APR/BPR—useful where the estate is “asset rich, cash poor.”
Step-by-step: what to do between now and 6 April 2026
- Prepare a one-page asset map.
List all assets that may qualify for APR/BPR, including current ownership, approximate values, and trading or operational status. - Run an “IHT under 2026 rules” estimate.
Model: -
- qualifying APR/BPR at 100% up to £2.5m per person
- excess at 50%
- nil-rate band / residence nil-rate band (where relevant)
- debts and liquidity
- Address eligibility issues to secure quick improvements.
Many APR/BPR claims fail due to avoidable issues such as changes in trading status, investment activities, mixed-use property, and documentation gaps. Conduct an eligibility review before making any structural changes. - Align ownership to match the allowances.
If one spouse owns most qualifying assets, consider rebalancing ownership, where commercially and legally appropriate, to improve outcomes. - Rebuild the will strategy for the new cap.
This reform increases the importance of estate structure. Ensure prominent access to guidance on “Wills after the APR/BPR cap: why spouse-first can create IHT later.” - Stress-test lifetime gifts and trusts against the transitional rules.
This is particularly important if you have made or plan to make gifts since 30 October 2024. - Create a liquidity plan for the “20% slice.
Options often include instalments, business cash management, life cover written in trust, and, in some cases, staged succession rather than a single large transfer.
Why Tax Accountant for APR/BPR cap planning
Most IHT issues after 6 April 2026 will arise not from lack of awareness of the cap, but from execution errors such as:
- Wills that unintentionally concentrate value into the second estate
- Ownership structures that waste allowances
- Gifts/trusts that look sensible but don’t work under transitional rules
- No liquidity plan—forcing asset sales at the worst time
How we help (fixed-fee, specialist-led):
- APR/BPR eligibility review + evidence pack preparation
- Cap modelling (single + couple) and succession planning roadmap
- Will/trust coordination with your solicitor (or via our private client partners)
- “Asset rich / cash poor” IHT liquidity planning