Business Property Relief 2026: What The £1M Cap Can Mean For You
- Adil Akhtar
- Jul 22
- 14 min read
Business Property Relief 2026: What the New Cap Really Means for UK Business Owners
The rules have changed since 6 April 2026. If you own a trading business, hold shares in a private company, or have used AIM shares in your inheritance tax planning, the reforms to Business Property Relief (BPR) will directly affect your estate. Here is what you need to know, including several aspects that most coverage gets wrong or glosses over entirely.
How BPR Has Worked, and Why It Is Being Reformed
Business Property Relief has been a cornerstone of UK inheritance tax planning since 1976. Its purpose was practical: to prevent a family business from having to be broken up or sold simply to fund an inheritance tax (IHT) bill on the owner's death. Without it, a private trading company passing between generations would face a 40% IHT charge on its value above the nil-rate band, potentially forcing a sale of the very asset the family depends on.
Under the existing rules, qualifying business assets attract either 100% or 50% relief. The 100% rate, available for shares in unquoted trading companies, partnership interests, and sole trader businesses, means qualifying assets carry an effective IHT rate of zero. There is currently no ceiling on the value that can be sheltered. A business worth £20 million qualifying for 100% BPR passes to the next generation free of inheritance tax.
That changes on 6 April 2026.
What Is Actually Changing: The Cap, the Rate, and the Revised Figures
The original announcement in the Autumn Budget 2024 set a £1 million combined cap on assets qualifying for 100% BPR and Agricultural Property Relief (APR). It generated significant controversy, particularly from farming families. On 23 December 2025, the Government announced the allowance would increase from £1 million to £2.5 million, making the headline figure in many articles you may have already read out of date.
The current position, legislated to take effect from 6 April 2026, is:
The first £2.5 million of qualifying assets will be exempt from IHT, and the excess will attract 50% relief, in effect producing a 20% tax rate, for transfers after 5 April 2026. BPR and Agricultural Property Relief share this allowance on a pro-rata basis where both apply to the same estate.
There is an important spousal dimension that was added later. Any unused part of the £2.5 million allowance can be transferred to a surviving spouse or civil partner. Spouses and civil partners will potentially be able to pass on, combined, £5 million of qualifying agricultural or business assets free of tax. Crucially, if the first death was before 6 April 2026, it will be assumed the entirety of the £2.5 million allowance will be available for transfer to the surviving spouse or civil partner. GOV.UK This is a meaningful protection for older couples where one partner has already died.
The qualifying conditions for BPR have not changed. The business must be mainly trading, you typically need to have owned the qualifying shares for at least two years, and there must be no binding contract for sale in place.
The AIM Share Problem: A Separate Change That Many Miss
The cap on 100% relief is only part of the picture. There is a second, distinct change affecting AIM-listed shares, and it operates differently.
From 6 April 2026, BPR on qualifying AIM investments will reduce from 100% to 50%, meaning only half of the value of qualifying AIM shares will be disregarded for IHT purposes, assuming all conditions are met. Given that the standard rate of IHT is 40%, this effectively creates a 20% IHT charge on qualifying AIM investments at death.
The structural distinction matters: AIM shares are in a separate 50% relief category. They do not consume the £2.5 million allowance, which is reserved for assets that still qualify for up to 100% relief, like private trading shares.
So an investor holding £1 million of qualifying AIM shares alongside a private company worth £3 million does not face a competition between those assets for the £2.5 million allowance. The AIM shares are dealt with under their own 50% regime; the private company allowance remains intact. That said, the AIM shares are no longer the near-zero-IHT vehicle they once were, at 50% relief, the effective IHT charge is 20% of the full value. An AIM portfolio worth £500,000 that formerly attracted no IHT now carries a potential £100,000 liability.
Anyone who structured their estate planning around AIM shares primarily for IHT purposes should revisit whether the risk profile and reduced relief still make sense given the alternatives now available.
The Lifetime Allowance Mechanic, and Why Gifts Now Matter More
The £2.5 million allowance does not simply reset at death. The £2.5 million will effectively be a 'lifetime allowance', covering the estate on death, failed gifts and lifetime transfers into trust in the seven years before death.
This mirrors the way the nil-rate band operates for chargeable transfers, and it has a significant implication for planning. Gifts of qualifying business property made after 30 October 2024 will count against your allowance if you die within seven years, even if those gifts were made before 6 April 2026. Transitional rules mean the operative date for chargeable lifetime transfers will have effect for deaths occurring on or after 6 April 2026 where lifetime gifts were made on or after 30 October 2024 and the transferor dies on or after 6 April 2026, within seven years of making the gift.
There is a partial offset: the allowance refreshes on a rolling seven-year basis. If you survive a gift by seven years, the allowance used by that gift is restored. Much like an individual's nil-rate band allowance, an individual's BPR allowance will be refreshed every seven years, and the amount will be adjusted for inflation from 6 April 2030.
For business owners considering lifetime transfers to children, the seven-year clock matters more now than it did when BPR was uncapped.
Trust Planning: A Different Set of Rules
Trusts add complexity, and several details here are poorly covered elsewhere.
A £2.5 million allowance will also apply to the combined value of relievable agricultural and business property in trusts. For trustees, this applies at each ten-year anniversary charge and on capital distributions.
The transitional rules for existing trusts are worth noting. APR and BPR assets settled on trust before 30 October 2024 will be brought into the scope of the new regime on the trust's first ten-year anniversary which occurs after the new rules take effect on 6 April 2026. Until then, unlimited 100% APR and BPR will remain available where exit charges apply on distribution of trust assets, and such exits will not use any of the trustees' allowance when calculating the next ten-year charge.
For settlors with multiple trusts, the picture changes from 30 October 2024 onwards. Settlors may have set up more than one trust comprising qualifying business property before 30 October 2024. In that case, from 6 April 2026, each trust would have a £1 million allowance for 100% relief. (Note: this refers to the pre-December 2025 legislation; the December 2025 increase to £2.5m applies to individuals and trusts alike per GOV.UK guidance.) For new trusts or trusts created on or after 30 October 2024, the allowance is divided between them, a settlor cannot simply multiply their relief by creating multiple structures.
A Worked Example: Business Worth £4 Million
Consider a business owner who dies on or after 6 April 2026 holding 100% of a private trading company valued at £4 million. Their spouse is still living and has no qualifying business assets of their own.
Under the new rules:
● The first £2.5 million receives 100% BPR, no IHT on that portion.
● The remaining £1.5 million attracts 50% relief, so £750,000 is chargeable at 40%, a tax bill of £300,000.
● On top of this, the unused nil-rate band (£325,000) and, where applicable, the residence nil-rate band would also reduce the estate's IHT exposure.
On the second death, the surviving spouse could inherit their partner's unused £2.5 million BPR allowance (assuming none was consumed by lifetime transfers). If the surviving spouse also owned qualifying business assets, the combined allowance could shelter up to £5 million at 100%.
From 6 April 2026, IHT on business property may be paid over ten annual instalments, interest-free, so this offers some measure of mitigation. For cash-poor estates where the business itself is illiquid, this instalment option is significant, it means the IHT bill does not have to be met in full within six months of death.
What the Trading Test Still Excludes, and Why This Matters
The qualifying conditions for BPR have not been relaxed alongside the cap reduction. The "wholly or mainly trading" requirement remains the principal gateway, and HMRC applies it rigorously.
Investment businesses, companies whose activities consist mainly of holding investments, letting property, or dealing in stocks and shares, do not qualify. Relief is not available to landlords with rental property and furnished holiday lets, unless the level of additional services provided is so high that the activity is deemed to be a trading activity. That threshold is high and rarely met.
Excess cash held within a trading company has always been a source of dispute. HMRC can identify cash or investment assets held within an otherwise qualifying company and apportion the relief accordingly, a point that can significantly reduce the effective relief on death. Directors of owner-managed businesses who have been accumulating retained profits within the company without reinvesting them should pay particular attention to this. The retained cash may not qualify for BPR at all.
Likewise, where a company has shifted over time from a mainly trading model to one with significant investment activity, perhaps by acquiring property, building a large investment portfolio, or taking on holding company characteristics, HMRC may deny relief on the full value. A business that qualified comfortably five years ago may not qualify now if its activities have evolved.
HMRC offers a non-statutory clearance service for business owners in relation to the BPR consequences of transactions that affect the business. In order for the clearance service to be available, there must be an immediate charge to IHT, such as would arise on most gifts into and out of trust. This service does not cover gifts to individuals, but it can provide useful advance assurance in trust planning situations where the position is genuinely uncertain.
Practical Steps for Business Owners Before and After April 2026
The reforms do not eliminate BPR, for most family businesses valued under £2.5 million, the impact is limited. But for those with larger estates, the calculation has changed, and some planning that was once deferred can no longer be left indefinitely.
Several areas warrant immediate review:
Valuation. If you have not had your business independently valued recently, now is the time. Understanding whether the estate sits above or below the £2.5 million threshold is the starting point for any planning decision.
Spousal structure. Each spouse should consider holding at least £2.5 million in BR qualifying assets, or passing some qualifying assets to beneficiaries other than their spouse. Where one partner owns the majority of the business, equalising ownership between spouses can double the effective allowance, though the recipient spouse must hold the shares for at least two years before death for the relief to apply.
Wills and shareholder agreements. Current wills may assume unlimited BPR where an IHT charge now exists. Shareholder agreements and buy-sell arrangements should also be reviewed, if there is a binding contract for sale in place at the point of death, BPR is denied entirely.
Liquidity planning. For larger estates, the instalment option helps but does not eliminate the need to think about how the IHT bill will actually be funded. Life insurance written in trust remains one of the more straightforward tools here.
AIM portfolio review. If AIM shares were acquired primarily for IHT planning, the risk-return calculus has changed. A 20% effective charge, combined with the inherent illiquidity and risk of AIM investments, means the strategy needs reassessing in the context of the overall estate.
Key Takeaways
● The cap is £2.5 million, not £1 million. The original Autumn Budget 2024 figure was revised upward on 23 December 2025. Much published guidance still cites the £1m figure, check the date of any article you read.
● Above £2.5 million, 50% relief applies, not zero relief. The effective IHT rate on the excess is 20%, not 40%.
● The allowance is transferable between spouses from 6 April 2026, including where the first spouse died before that date.
● AIM shares are changing separately, they move to 50% relief regardless of value, and do not consume the main £2.5 million allowance.
● The qualifying conditions have not changed. The trading test, the two-year ownership rule, and the exclusion of investment businesses all remain in force.
● The allowance is a lifetime allowance, refreshing every seven years. Gifts since 30 October 2024 count against it if you die within seven years.
● An interest-free ten-year instalment option is being extended to all BPR and APR assets, which helps with cash-flow planning for illiquid estates.
● Excess cash and investment assets within a trading company remain a qualification risk, a point that matters more now that the stakes above the cap are higher.
For business owners whose estates are likely to exceed £2.5 million in qualifying assets, specialist advice from a private client solicitor and a chartered tax adviser working together is now more important than the planning itself. The window between now and April 2026 is narrow; the implications of inaction are not.
FAQs
Q1: Does the £2.5 million BPR allowance apply separately to each asset in an estate, or is it one combined pot across everything?
A1: It's a single combined allowance, and this catches people out more often than you might expect. The £2.5 million applies to the total value of all assets in your estate qualifying for 100% Business Property Relief and Agricultural Property Relief added together. So if you hold shares in a private trading company worth £1.5 million and also own qualifying agricultural land valued at £1.2 million, those two assets compete for the same £2.5 million pot. In this case, the combined £2.7 million means £200,000 sits above the threshold and attracts 50% relief, producing an effective inheritance tax charge of 20% on that excess. Where both BPR and APR assets are present, the allowance is apportioned across them proportionally, not applied to one first. Always treat it as one budget, not two.
Q2: Can a sole trader benefit from the new allowance in the same way as a limited company director?
A2: Yes, and this is reassuring for the many self-employed individuals who worry the relief only applies to incorporated businesses. A sole trader's business, meaning the goodwill, trade assets, and working capital used in the business, can qualify for 100% BPR in the same way as unquoted company shares. If you run a plumbing business, a consultancy, or a craft workshop as a sole trader, the business interest passes as relevant business property. The £2.5 million allowance applies equally. The distinction to watch is that purely passive assets, a van sitting in your driveway not used for trade, investment accounts held in your name, do not qualify simply because you are self-employed. The relief follows the business activity, not the person's status. If your sole trader business is valued above £2.5 million, the same 50% relief on the excess applies.
Q3: What happens to BPR if a business owner dies during the two-year ownership period, does the estate lose the relief entirely?
A3: Generally, yes, dying before reaching the two-year ownership threshold means the relief is not available. The two-year rule is a hard qualifying condition, not a sliding scale. However, there are two important exceptions worth knowing. First, if the deceased inherited the business from a spouse or civil partner who had themselves owned it for any period, those ownership periods can be aggregated. So if a husband owned the business for eighteen months before dying, and his wife inherited it and held it for a further nine months before her own death, the combined ownership of twenty-seven months means the relief is available on her estate. Second, if a replacement asset was purchased using proceeds from a previous qualifying business interest within three years, the ownership clock does not reset. These are precise rules and the paperwork matters enormously, HMRC will look at the dates carefully.
Q4: If a business owner gifts shares to an adult child before April 2026, does the old unlimited BPR apply or the new capped version?
A4: This depends on whether the donor survives the gift by seven years and, critically, whether they survive past 6 April 2026. For gifts to individuals, BPR is only relevant if the donor dies within seven years, because such gifts are potentially exempt transfers and only become chargeable on death within that window. If the donor dies on or after 6 April 2026 having made a gift after 30 October 2024, the new capped regime applies to that gift when calculating the inheritance tax on death. So a gift of shares made in January 2025, if the donor dies in 2028, will be assessed under the new £2.5 million allowance. This transitional point has caught some people off guard who assumed gifts made before April 2026 would automatically fall under the old unlimited rules. They do not, if death occurs after the reform date.
Q5: Does BPR apply to a family investment company, the type set up to hold shares and property for wealth management?
A5: Well, this is where a lot of families discover an expensive mismatch between expectation and reality. A family investment company whose main activity is holding shares, property, or other investments does not qualify for BPR. The "wholly or mainly trading" test is the gatekeeper, and an investment holding structure, however carefully structured, typically fails it. In practice, some family companies carry out a mixture of activities: perhaps holding a rental property portfolio alongside a small trading business. Where the investment side dominates, HMRC will deny relief on the full value. Where the trading side genuinely dominates in terms of turnover, asset value, and management time, there may be an argument for partial or full relief, but HMRC scrutinises these cases closely. A family investment company created specifically to manage wealth without genuine trading activity almost certainly cannot claim BPR, regardless of how it is labelled.
Q6: Can a partnership interest qualify for BPR, and does the new cap apply the same way?
A6: A partnership interest in a trading partnership qualifies for 100% BPR in the same way as shares in an unquoted trading company, and the £2.5 million allowance applies identically. What differs is how the interest is valued and what portion is treated as relevant business property. Any assets held personally by a partner that are used by the partnership, a building, for example, that a partner owns individually but lets to the firm, qualify for 50% BPR rather than 100%. These 50% qualifying assets do not consume the £2.5 million allowance; only the 100% qualifying assets do. Where the partnership interest itself is above £2.5 million, the excess attracts 50% relief as usual. One often-overlooked point: where a partner's capital account includes significant non-trading assets or excess cash, those elements can be excluded from the relief calculation, reducing the qualifying value below the headline figure on the partnership balance sheet.
Q7: Is it possible to lose BPR on business assets if the business is being sold at the time of death?
A7: This is one of the most significant and least discussed risks in BPR planning, and I have seen it create very difficult situations for families. If there is a binding contract for sale in place at the date of death, even if the sale has not completed, BPR is denied on those assets. The relief is specifically withdrawn where the relevant business property is subject to a binding contract for sale at the time of the transfer. A signed heads of terms does not typically constitute a binding contract, but a properly executed share purchase agreement or asset sale agreement almost certainly does. Where a business owner is seriously ill and a sale is being negotiated, timing becomes acutely important. Even a business that would otherwise attract full relief becomes fully chargeable to IHT if a binding contract exists at the point of death. This is an area where the interplay of commercial lawyers and private client advisers needs to be managed very carefully.
About the Author:
Adil Akhtar, ACMA, CGMA, FCMA, (membership ID is 990250923) serves as CEO and Chief Accountant at Pro Tax Accountant, bringing over 18 years of expertise in tackling intricate tax issues. As a respected tax blog writer, Adil has spent more than eighteen years delivering clear, practical advice to UK taxpayers. He also leads Advantax Accountants, (registered with Companies House), combining technical expertise with a passion for simplifying complex financial concepts, establishing himself as a trusted voice in tax education.
Email: adilacma@icloud.com
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