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Tax remains one of the most significant risks to the long‑term preservation of a landed estate. An unexpected inheritance tax (IHT) charge at 40% on an untimely death, or a capital gains tax (CGT) charge of up to 24% on a lifetime transfer, can create a liquidity crisis. In the absence of planning, this can force the sale of core assets or even the break‑up of an estate that the family had intended to keep intact.

For that reason, every estate owner should plan for tax early and revisit that planning regularly. The aim is not only to reduce the liability where possible, but also to ensure that any tax which does arise can be met without compromising the estate’s integrity.

APR and BPR: still essential, but now capped

Historically, landed estates have relied heavily on two key IHT reliefs:

• Agricultural Property Relief (APR)
• Business Property Relief (BPR)

These reliefs have been central to successful succession planning because they were able, in the right circumstances, to shelter the entire value of agricultural and business assets from IHT.

That is no longer the case.

The new £2.5m per‑person cap

The most important recent change is the introduction of a £2.5 million cap per individual on the amount of value that can qualify for 100% APR or BPR relief.

This is a major shift. Previously, qualifying assets could receive unlimited relief (albeit restricted to the agricultural value in the case of APR relievable property). Now:

• Each person can obtain 100% relief on only the first £2.5m of qualifying value.
• Any value above that threshold is exposed to IHT at 20% on death. Relief still applies, but only at 50%, hence the 20% rate is 50% of the usual 40% IHT rate.
• For many landed estates, the value of agricultural land, diversified business assets, and heritage property will exceed the cap by a considerable margin.
• There is the option to pay tax on all property eligible for APR or BPR by ten equal interest-free instalments over a ten-year period. 

The practical effect is that estates which previously expected to pass free of IHT may now face substantial tax liabilities, requiring careful planning to avoid forced sales (albeit mitigated to an extent by the ability to pay in interest-free instalments). Giving away assets to the next generation sooner is not a simple answer to this problem given the likelihood of substantial CGT charges and the potential for loss of control. 

It is also worth noting that the apportionment of relief is not controllable where a lifetime transfer contains qualifying agricultural and business property. The 100% relief is simply apportioned between the agricultural and business property pro rata. There is no choice in deciding how the allowance is allocated in the seven years before death, which may have a bearing on lifetime planning. 

Balfour planning: still relevant, but more strategic

The long‑established Balfour principle – the idea that an estate may, in the right circumstances, be treated as a single composite trading business – remains an important concept.

A successful Balfour approach can allow the entire estate to be treated as a trading business for IHT purposes, potentially bringing a much larger proportion of the estate within the scope of BPR.

However:

• The new £2.5m cap means that even where Balfour planning is achievable, the relief available will be limited.
• The strategic value of Balfour now lies in maximising the portion of the estate that can qualify outside the cap to ensure that the assets at least benefit from 50% relief, rather than nothing. It also ensures that the estate’s trading profile is robust and well‑evidenced.

Balfour planning therefore remains a valuable tool, but it must now be integrated into a broader, more nuanced tax strategy.

Conditional exemption: an opportunity for outstanding heritage assets

Some estates hold land, buildings, or works of art that may qualify for conditional exemption from IHT. This exemption remains extremely valuable because:

• It can remove IHT entirely on qualifying heritage assets (even though in effect it postpones rather than ousts the charge).
• It allows those assets to pass down the generations without triggering tax charges provided new owners accept the conditions.

However, conditional exemption comes with ongoing obligations relating to preservation, access, and reporting. These commitments must be understood and managed carefully, but for the right estates the benefits can be transformative.

In addition to that, conditional exemption will only be available for a very limited number of assets. The qualifying categories are deliberately narrow and focus on assets of exceptional national importance – simply describing something as ‘heritage’ is not enough. Broadly, the categories include:

1. Works of art and objects of pre‑eminent national interest

   Examples include paintings, manuscripts, scientific instruments, or collections recognised for their artistic, historic, or scientific significance.

2.  Land of outstanding scenic, historic, or scientific interest

   This may include ancient woodland, archaeological sites, designed landscapes, or ecologically significant habitats.

3. Buildings of outstanding historic or architectural interest

   Often accompanied by essential amenity land and historically associated objects.

Eligibility is assessed by expert bodies such as Historic England, Arts Council England, and Natural England, who act as agents for HMRC.

What this tax landscape means for estate owners

• Reliefs remain available and are still valuable but they are no longer a complete solution.
• Tax planning must be integrated into the estate’s long‑term management, not treated as a separate exercise. Unexpected events happen so doing nothing and hoping for a future government to reverse changes is a risk. 
• Liquidity planning becomes essential to avoid forced sales.
• Ownership structures may need to be revisited to maximise relief across family members.
• Governance and record‑keeping matter more than ever, particularly where BPR or Balfour arguments are relied upon.
• Insurance or self-insurance options are worth considering, and starting early typically reduces the cost.
• Any pension planning needs reviewing ahead of April 2027 changes especially if a SIPP holds business or other assets which will no longer be sheltered.

How Sinclair Gibson can help

Sinclair Gibson has longstanding experience advising landed estates on succession planning, tax strategies, and the practical use of APR, BPR, Balfour principles and conditional exemption. We help estate owners:

• understand how the new £2.5m cap affects their estate
• structure ownership to maximise relief across generations
• plan for liquidity so that tax does not force the sale of core assets
• assess whether Balfour planning is achievable and strategically worthwhile
• explore conditional exemption where heritage assets are involved
• integrate tax considerations into the estate’s long‑term management and governance

In a landscape where reliefs are more limited and scrutiny is increasing, early and ongoing advice is essential to protect the estate for future generations.