IHT and Partnership Property: How Inheritance Tax Applies to Partnership Interests
A qualifying partnership interest attracts 100% Business Property Relief from IHT after 2 years' ownership — potentially eliminating all IHT on the partner's share. But the partnership agreement matters: accruer clauses can destroy BPR by converting the interest into a debt before IHT is assessed. Excepted assets within the partnership further reduce the relief.
Key IHT Issues for Partners
Does a partnership interest qualify for BPR?
A partner's interest in a qualifying business — including their share of the partnership assets and goodwill — qualifies for BPR at 100% under s105(1)(a) IHTA 1984, provided: (1) the partnership has been carrying on a qualifying business (wholly or mainly trading) throughout the 2 years before the partner's death or the lifetime transfer; (2) the partner has held the interest for at least 2 years; (3) the partnership is not purely investment (a property investment partnership or a partnership holding shares does not qualify). At 100% BPR, the entire net value of the partnership interest (less excepted assets) is excluded from the chargeable estate.
How is a partnership interest valued for IHT?
Under s160 IHTA 1984, partnership interests are valued at their open market value — the price a hypothetical purchaser would pay for the interest in the open market. In practice, this is generally the partner's capital account balance plus their share of the goodwill and any undrawn profits. For tax purposes, HMRC may challenge valuations where the partnership agreement restricts transferability (e.g. a clause requiring the remaining partners to approve any new partner) or where the interest is a minority interest in a large partnership (which may attract a minority discount). Professional partnership valuers are typically engaged on death to agree the value with HMRC's Shares and Assets Valuation (SAV) division.
What is the effect of an accruer clause in the partnership agreement?
Many partnership agreements contain an 'accruer clause' (also called a continuation clause) that provides that on a partner's death, their share in the partnership accrues automatically to the surviving partners — the deceased's estate does not inherit the partnership interest. Instead, the estate receives a debt representing the value of the deceased's capital account. Where there is an accruer clause: (1) the partnership interest passes outside the estate (by the operation of the clause, not by the will) — BPR does not apply to the accrued interest itself; (2) the debt owed to the estate (the capital account value) is an asset of the estate but does not qualify for BPR — it is a simple debt; (3) the surviving partners effectively acquire a windfall benefit. Accruer clauses can cause significant IHT problems — the estate loses BPR and must pay IHT on the debt. Modern partnership agreements for tax-aware partnerships usually avoid pure accruer clauses.
What is the IHT treatment of a buy-out provision in a partnership agreement?
A buy-out provision (also called a 'put and call' option or a cross-option agreement) allows the surviving partners to purchase the deceased's interest at an agreed price within a set period. Unlike an accruer clause, a buy-out does not automatically transfer the interest — the deceased's estate remains the holder until the option is exercised. This means: (1) BPR can apply to the partnership interest in the estate from the date of death to the exercise of the option; (2) when the surviving partners exercise their option to buy, the estate disposes of the interest at the agreed price; (3) the proceeds of the buy-out are cash — which does not qualify for BPR and forms part of the estate. The timing of the option exercise relative to the IHT payment date is therefore critical — ideally, the option is exercised after IHT has been assessed and BPR claimed on the interest.
Excepted assets in a partnership
As with company shares, a partner's interest in a partnership is reduced by the partnership's excepted assets when calculating BPR. If a trading partnership holds significant surplus cash, investment properties, or non-business assets, those assets are excluded from BPR under s112 IHTA 1984. The partner's BPR claim is therefore limited to their proportionate share of the qualifying business assets, not the full value of their capital account. Partnerships with mixed trading and investment activities face both the wholly-or-mainly test (which may disqualify BPR entirely if investment predominates) and the excepted assets reduction (which reduces BPR even if the wholly-or-mainly test is passed).
Frequently Asked Questions
Does a partner's interest always qualify for 100% BPR?
Not automatically. The conditions are: (1) the partnership must be carrying on a qualifying business — wholly or mainly trading, not investment; (2) the partner must have held the interest for at least 2 years; (3) the interest must not be wholly or mainly in excepted assets. A partnership that holds a portfolio of investment properties and rents them out is an investment business — BPR is not available. A medical partnership, a law firm, an accountancy practice, or a manufacturing partnership are typically qualifying businesses. Mixed partnerships (part trading, part investment) face the wholly-or-mainly test on a facts-and-circumstances basis.
What happens to a partnership interest on the death of a partner — does the will govern?
It depends on the partnership agreement. In a general partnership (under the Partnership Act 1890), a partner's death automatically dissolves the partnership unless the agreement provides otherwise. Most modern partnership agreements include continuation clauses to prevent automatic dissolution. The options on death are: (1) the estate inherits the partnership interest (subject to any restrictions in the agreement); (2) an accruer clause transfers the interest to the surviving partners and the estate receives a debt; (3) a buy-out provision allows surviving partners to purchase the interest from the estate. The will can only control what the estate does with the interest once it has vested in the estate — if the partnership agreement provides for automatic accrual or transfer to the surviving partners, the will cannot override it.
Are LLP interests treated the same as partnership interests for BPR?
Yes — interests in a Limited Liability Partnership (LLP) are treated as interests in a partnership for BPR purposes under s105(1)(a) IHTA 1984, provided the LLP is carrying on a qualifying business. The same BPR qualifying conditions apply: 2-year holding period, wholly-or-mainly trading, no excepted assets disqualification. The additional complication for LLPs is the 'salaried member' rules (ITTOIA 2005): members who are treated as employees rather than genuine partners for income tax purposes may face arguments that their LLP interest does not qualify for BPR on the same basis as a true partner. HMRC has considered this issue in the context of larger professional firm LLPs. Specialist advice is needed for salaried member LLP interests.
What is the IHT treatment of a sole trader's business on death?
A sole trader's business assets — including goodwill, stock, plant, equipment, and business premises (if owned by the sole trader) — can qualify for BPR at 100% under s105(1)(a) IHTA 1984, provided the business has been carried on by the sole trader for at least 2 years and is a qualifying trading business. The BPR applies to the net value of the business assets (after deducting business liabilities). Assets used in the business (plant, vehicles, premises) and goodwill are qualifying; excepted assets (surplus cash, investment property, personal assets held in the business) are excluded from BPR. On the sole trader's death, the business assets pass under the will. A will that leaves the business to a beneficiary who continues it may also qualify for holdover relief from CGT on the base cost uplift.
Does the April 2026 BPR cap affect partnership interests?
Yes — from April 2026, the combined 100% BPR and APR relief is capped at £2.5m per individual (or effectively £5m for a couple who have both held qualifying property for the required period). Partnership interests (and shares in qualifying companies) above £2.5m in combined value are subject to IHT at 20% (50% of 40%) on the excess. For partners in large professional firms, farming partnerships, or other high-value partnerships, this cap may significantly change the IHT planning analysis. Partners with interests valued above £2.5m should model the post-cap IHT position and consider lifetime gifting (noting holdover relief is available for gifts of qualifying business assets) or restructuring to manage the exposure.
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