Who this is for: Business owners whose company is worth more than £2.5m and who have been relying on Business Property Relief to protect the full estate value from inheritance tax.
A family manufacturing business grows to £6 million in value. The founder has been told, and correctly believed, that Business Property Relief would protect the business from inheritance tax on death. For most of the business's life, that was true. Then April 2026 arrived.
What changed in April 2026
From April 2026, Business Property Relief is capped at £2.5 million per person for 100% relief. Assets above that threshold receive only 50% relief. For a business worth £6 million, the calculation on death looks like this:
| Estate component | Value | BPR relief | Subject to IHT |
|---|---|---|---|
| First £2.5m of business | £2,500,000 | 100% | £0 |
| Remaining £3.5m of business | £3,500,000 | 50% | £1,750,000 |
| IHT at 40% on £1.75m | -- | -- | £700,000 |
After settling the IHT liability and accounting for legal and administration fees, the family receives approximately £3.6 million from a business worth £6 million. The remaining £2.4 million has been absorbed by tax and costs.
The structure that would have prevented this
The mechanism available before this outcome crystallised is the the capital architecture strategy. The founder freezes the current value of the business, in this case, £6 million, by issuing the new share class to a family trust. From the date of issue, all future appreciation in the business accrues to the trust, outside the founder's personal estate.
Had the founder frozen the value at £3 million two years earlier and issued the new share class to a family trust, the subsequent £3 million of growth would sit entirely outside the estate. The BPR cap would apply only to the frozen £3 million, with the remaining growth protected by the trust structure.
The cost of implementing a the capital architecture structure: approximately £5,000 to £10,000 in legal fees. The cost of not implementing it: £700,000 in inheritance tax on a £6 million business, with the liability growing as the business continues to appreciate.
The timing problem
The capital architecture must be issued before the value you want to protect has accrued. A founder who issues the new share class today freezes today's value. A founder who waits until the business is worth £8 million before acting has already allowed £2 million of additional growth to land inside the estate at 20% effective IHT exposure.
The difference between acting and waiting is not a few thousand pounds in legal fees. On a £6 million business, it is the difference between the family receiving £5.3 million and the family receiving £3.6 million.
Map Your Structure
If your business is worth more than £2.5m, the audit will show you your current IHT exposure and the exact structure that would lock it in at today's value.
Run the Free Audit →What This Means for Your Position
The situations in this article are not edge cases. They are the default outcome for founders who operate without the architecture above their business. The audit maps your position in five minutes and tells you exactly which of these gaps apply to you.
The audit is free. The Discovery Call is a paid 30-minute working session. The £500 is credited in full against the Capital Architecture.
Why the Discount Happens
The 40% that disappears between business value and family receipt is not bad luck. It is the predictable outcome of operating at the Stability layer: a trading company with no constitutional architecture above it.
A group structure at the Growth layer reduces the exposure. Assets separated, capital shielded, IHT planning started. Most restructuring advice reaches this point and stops.
The Expansion layer is where the discount is eliminated rather than reduced, through governance structures, share class design, and succession frameworks that are built into the architecture before the wealth transfer event, not negotiated after it. The families who receive the full value built the structure while they still had time to do so.