Business Property Relief (BPR) Inheritance Tax UK: 100% Relief on Business Assets (2026)
Business Property Relief (BPR — ss103-114 IHTA 1984) reduces the IHT value of qualifying business assets by 100% or 50%. Sole trader businesses, AIM shares, and unquoted company shares held for 2+ years qualify for 100% BPR — meaning £0 IHT on those assets. From April 2026, the 100% rate is capped at £1,000,000 combined BPR/APR. The trading test and excepted assets rules are the main qualification hurdles.
| Asset Type | BPR Rate | Statutory Reference | Notes |
|---|---|---|---|
| Sole trader business / partnership interest | 100% | s105(1)(a)/(b) IHTA 1984 | Full business value (less excepted assets). 2yr ownership. Trading test. |
| Unquoted company shares (incl. AIM) | 100% | s105(1)(bb) IHTA 1984 | AIM treated as unquoted. £1m combined cap from April 2026. |
| Controlling interest in unquoted company (>50% votes) | 100% | s105(1)(b) IHTA 1984 | 100% on controlling interest; trading test; excepted assets. |
| Controlling interest in quoted company (>50% votes) | 50% | s105(1)(cc) IHTA 1984 | Minority quoted holding: no BPR. Must be controlling (>50% votes). |
| Land/buildings used in partner's business | 50% | s105(1)(d) IHTA 1984 | Asset must be used in the partnership trade at date of death. |
| Land/buildings used by controlled company | 50% | s105(1)(e) IHTA 1984 | Shareholder must control the company (>50% votes). |
| Investment properties (buy-to-let, commercial lets) | 0% | s105(3) IHTA 1984 | Investment, not trading — fails the trading test. No BPR. |
| Excepted assets within business | 0% | s112 IHTA 1984 | Investment portfolios, surplus cash — excluded from BPR value. |
From April 2026: combined BPR+APR at 100% capped at £1m per estate; 50% applies above the cap. Professional valuation and advice required for business IHT.
Business Property Relief: Complete Guide
What assets qualify for 100% BPR?
Business Property Relief at the 100% rate (s105(1) IHTA 1984) applies to: (1) A sole trader's business or an interest in a business (e.g., a partnership share) — ss105(1)(a) and (b). This includes the goodwill, stock, debtors, and other business assets used in the trade. The entire business value (subject to the excepted assets rule) is eligible for 100% BPR after 2 years' continuous ownership; (2) Unquoted company shares — s105(1)(bb). Shares in a company whose shares are NOT listed on a recognised stock exchange (i.e., not the main London Stock Exchange) — including AIM (Alternative Investment Market) shares, which are treated as unquoted for BPR purposes. A full 100% BPR means £0 IHT on qualifying AIM shares held for 2+ years (up to the £1m cap from April 2026); (3) A controlling interest in an unquoted company — s105(1)(b). Where the deceased owned more than 50% of the voting rights in an unquoted company; (4) Any shares in an unquoted company if the deceased was a minority holder — s105(1)(bb) applies to all unquoted shares regardless of the size of the holding, provided the trading test is met. From April 2026: the 100% BPR rate is capped at a combined BPR/APR value of £1,000,000. Above the cap: 50% BPR applies (effective IHT rate of 20% on the qualifying value above £1m).
What qualifies for 50% BPR?
Business Property Relief at the 50% rate (s105(1)(d) and (e) IHTA 1984) applies to: (1) A controlling interest in a QUOTED company (shares in a company whose shares are listed on a recognised stock exchange — the main market of the London Stock Exchange): the deceased must have held more than 50% of the voting rights — a minority shareholding in a quoted company does NOT qualify for BPR; (2) Land, buildings, plant, or machinery owned by a partner and used by the partnership in its trade: the land/building is in the deceased's personal estate (not the business), but BPR reduces its IHT value by 50%; (3) Land, buildings, plant, or machinery owned personally by a shareholder and used by their company: similarly, 50% BPR if the owner controls the company (or the company controls the business use of the asset). Practical effect of 50% BPR: a £1,000,000 business property qualifying for 50% BPR has an effective IHT value of £500,000 — saving £200,000 in IHT (50% × £1m × 40%). Note: from April 2026, the 50% BPR treatment (even where the statutory rate would be 100%) applies above the £1m combined BPR/APR cap.
The 2-year ownership requirement
BPR requires the asset to have been owned by the deceased for at least 2 years continuously immediately before the date of death (s106 IHTA 1984). The 2-year clock: (1) Starts from the date of acquisition (purchase, inheritance, or gift); (2) Must be continuous — a gap in ownership resets the clock; (3) There is a replacement property rule (s107 IHTA 1984): if the deceased replaced one qualifying business property with another (e.g., sold one business and used the proceeds to buy another), the ownership periods can be aggregated, provided the new property is also qualifying; (4) The 2-year rule is relaxed where property was inherited from a spouse: the deceased is treated as having owned the property for the same period as the spouse. AIM portfolio investors: for AIM BPR portfolios, the 2-year clock starts from the date each investment is made — a recent purchase may not qualify even if the portfolio as a whole is over 2 years old. Invest as early as possible to maximise the BPR-qualifying period.
The trading test — not wholly or mainly investment
The key qualification test for BPR is that the business must be a trading business — it must NOT be a business that is wholly or mainly: (1) dealing in securities, stocks, shares, or land; (2) making or holding investments. The 'wholly or mainly' test is a quantitative assessment of where the business's activities, turnover, asset base, and management time are focused — HMRC looks at multiple factors, not just one. Businesses that fail the trading test (investment businesses): property investment companies or LLPs (holding residential or commercial properties for rent — the rental income is investment income, not trading); holding companies where the underlying activities are investment rather than trade; family investment companies (if purely holding investment portfolios). Businesses that pass the trading test: property development companies (developing land and selling — trading, not investment); property management companies (actively managing properties for a fee — the management service is a trade); farming businesses (active farming); professional practices (accountants, solicitors, architects — service trades). Mixed trading/investment businesses: where the business has both trading and investment activities, HMRC applies the 'wholly or mainly' test holistically — if more than 50% of the business (by turnover, assets, or management time) is trading, it may qualify.
Excepted assets — investment assets inside the business reduce BPR
Even where a business qualifies for BPR, certain assets within the business are 'excepted assets' (s112 IHTA 1984) and are excluded from BPR. Excepted assets are assets that: (1) were neither used wholly or mainly for the purposes of the business throughout the 2 years before death; nor (2) required for future use in the business. Common excepted assets: surplus cash (cash in the business above what is reasonably required for day-to-day working capital); investment portfolios held by the company; residential or investment properties held by the company (not used in the trade); holiday lets or investment properties; cash on deposit in excess of working capital needs. Effect: the BPR is calculated on (qualifying business value − excepted assets value). A trading company worth £2,000,000 with £500,000 of excepted assets: BPR applies to £1,500,000 only, not £2,000,000. The excepted assets point is particularly important for family companies that have accumulated investment assets over the years.
April 2026 BPR reform: the £1 million cap
From 6 April 2026 (Autumn Budget 2024 reform): the 100% BPR rate is capped at a combined Business Property Relief and Agricultural Property Relief (APR) value of £1,000,000 per estate (not per asset). Above the £1,000,000 combined cap: only 50% relief is available (reducing the effective IHT rate from 40% to 20% on the value above £1m). How the cap works: if the deceased has both qualifying business property AND qualifying agricultural property, the £1m cap is shared between them. HMRC will allocate the cap proportionately or the estate can choose which assets use the cap first. Interaction with the NRB and RNRB: the BPR/APR capped value is not additive to the NRB — but the NRB (£325,000) reduces the taxable estate before BPR is applied. A business owner with a £3m business: pre-April 2026: 100% BPR on £3m = £0 IHT on business; post-April 2026: 100% BPR on £1m (no IHT) + 50% BPR on £2m = IHT at 20% on £2m = £400,000 IHT on the business (if no other reliefs available). This is a major change for large business owners and family companies — succession planning is now even more urgent.
BPR planning: key strategies before and after April 2026
Before April 2026: maximum BPR value was unlimited at 100% — the priority was ensuring 2-year ownership and meeting the trading test. After April 2026: with the £1m combined cap, planning strategies include: (1) Lifetime gifts of business property: a gift of business property is a CLT (if to a trust) or a PET (if to an individual). BPR can apply to reduce the IHT value on the gift at the date of transfer — and if the donor survives 7 years (PET) or the trust meets BPR conditions at the date of the gift (CLT), the IHT is significantly reduced. HMRC does not give full BPR on gifts to individuals that are above the £1m cap from April 2026; (2) Structured succession: pass the business to the next generation during life (either as a gift or sale) — the next generation starts their own 2-year BPR clock; (3) EMI and growth shares: employee Management Incentive (EMI) option schemes allow key employees to acquire shares at low value — reducing the IHT value of the founder's estate while retaining business control during life; (4) Life assurance: for IHT that will arise on business property (above the £1m cap), a whole-of-life policy in trust funds the IHT bill — premiums may qualify as normal expenditure from income (s21 IHTA).
Frequently Asked Questions
What is Business Property Relief for inheritance tax?
Business Property Relief (BPR — ss103-114 IHTA 1984) reduces the IHT value of qualifying business assets. 100% BPR: sole trader businesses, partnership interests, unquoted company shares (including AIM), and unquoted controlling interests — reduces the IHT value to £0 (up to £1m combined BPR/APR cap from April 2026). 50% BPR: controlling interests in quoted companies, land/buildings used in a business partner's or shareholder-director's own estate. Requirements: 2 years' continuous ownership; trading test (not wholly/mainly investment); no excepted assets (investment assets inside the business reduce BPR).
Do AIM shares qualify for BPR?
Yes — AIM-listed shares in qualifying trading companies are treated as unquoted shares for BPR purposes and qualify for 100% BPR under s105(1)(bb) IHTA 1984 after 2 years' ownership. The company must pass the trading test (not wholly/mainly investment). From April 2026, 100% BPR on AIM shares is capped at £1m combined BPR/APR — above £1m, the rate falls to 50% (effective 20% IHT). AIM ISA portfolios of qualifying shares retain the BPR benefit within the ISA wrapper.
How long do you have to own a business to get BPR?
2 years — the asset must have been owned continuously for at least 2 years immediately before death (s106 IHTA 1984). The 2-year clock resets if ownership ceases (e.g., if the shares are sold and new shares purchased — the replacement property rule in s107 IHTA may preserve continuity if a qualifying business asset is replaced with another qualifying asset). For inherited business property from a spouse, the deceased is treated as having owned the property for the same period as the spouse.
What is the £1 million BPR cap from April 2026?
From 6 April 2026 (Autumn Budget 2024): the 100% rate of BPR (and APR combined) is capped at £1,000,000 per estate. Business or agricultural property above the £1m combined cap qualifies for 50% relief only — effective IHT rate of 20% on qualifying assets above the cap. This is a major change — previously BPR at 100% was unlimited. Business owners with large business interests should take urgent advice on succession planning before April 2026.
Do investment properties qualify for BPR?
No — pure property investment (buy-to-let, commercial property held for rent) fails the BPR trading test. Rental income is investment income, and property letting is treated as making/holding investments, not trading. Exceptions: property development (buying, developing, and selling land — trading); property management for third parties (service fee — trading); furnished holiday lets (may be treated as a trade in some circumstances, but HMRC has become stricter). A company owning and renting commercial property for passive rental income will NOT qualify for BPR.
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