Immediate Post Death Interest UK (2026): The Life Interest Trust Created on Death and Its IHT Treatment

An Immediate Post Death Interest (IPDI) is a type of trust interest defined in IHTA 1984 s.49A that arises on a person's death and entitles a beneficiary to an interest in possession in the trust property immediately. The key features are: (1) CREATED BY WILL OR INTESTACY: an IPDI must be created by a will (or the intestacy rules — though this is less common). A life interest trust created during the deceased's lifetime is NOT an IPDI; (2) TAKES EFFECT IMMEDIATELY ON DEATH: the interest in possession must take effect immediately on the deceased's death — there can be no gap or prior trust period between death and the beneficiary receiving their interest. An IPDI cannot be created by a deed of variation that creates a new trust (though a variation that redirects to a life interest trust can qualify — HMRC takes the view that such a variation may create an IPDI if the conditions are met); (3) THE BENEFICIARY HAS AN INTEREST IN POSSESSION: the life tenant has the current right to income from the trust fund (or to occupy trust property, in the case of a residential property trust). This is an interest in possession — not merely a discretionary entitlement; (4) WHAT IT LOOKS LIKE IN PRACTICE: a typical IPDI in a will might read: 'I give my estate to my Trustees to hold on trust for my wife for life, with remainder to my children in equal shares.' On death, the wife immediately becomes entitled to the income from the estate — she has an IPDI; (5) NOT A DISCRETIONARY TRUST: an IPDI is fundamentally different from a discretionary trust. A discretionary trust gives the trustees complete discretion about who gets income or capital. An IPDI gives the life tenant a fixed right to income. The IHT treatment is correspondingly different; (6) PRE-FA 2006 BACKGROUND: before the Finance Act 2006, all interest in possession trusts enjoyed favourable IHT treatment (the trust fund was treated as part of the life tenant's estate). FA 2006 changed the rules so that most new interest in possession trusts are treated as relevant property. IPDIs are one of the surviving exceptions — they preserve the pre-FA 2006 treatment for life interest trusts created on death.

The IHT treatment of an IPDI is fundamentally more favourable than a discretionary trust because the IPDI trust fund is treated as part of the life tenant's estate — not as relevant property subject to periodic and exit charges: (1) THE RELEVANT PROPERTY REGIME — DISCRETIONARY TRUSTS: a discretionary trust (or a trust that is not an IPDI, disabled person's interest, or bereaved minor's trust) is subject to the 'relevant property' IHT regime: (a) periodic charge (also called the 10-year anniversary charge): IHT at up to 6% of the trust fund applies on each 10th anniversary of the trust; (b) exit charge: IHT applies when property leaves the trust before a 10-year anniversary. The exact rate depends on the time elapsed since the last 10-year anniversary; (c) these charges apply regardless of whether the life tenant or income beneficiary is the settlor's spouse; (2) THE IPDI REGIME — IHTA 1984 s.49A: under s.49A, an IPDI is not relevant property. Instead: (a) the life tenant is treated as if they own the trust fund outright for IHT purposes (s.49(1)); (b) no periodic charges apply; (c) no exit charges apply; (d) the trust fund is included in the life tenant's estate when they die — IHT on the trust fund is calculated as part of their death estate; (3) IHT ON THE LIFE TENANT'S DEATH: when the IPDI life tenant dies, the trust fund is aggregated with their free estate for IHT purposes. IHT at 40% may be payable on the combined estate above the NRB (and RNRB if applicable). The trustees pay the IHT attributable to the trust fund; the life tenant's personal representatives pay the rest; (4) COMPARISON EXAMPLE: £500,000 in a discretionary trust: after 10 years at 6% = £30,000 periodic charge (approximately). After each decade, similar charges continue indefinitely. In an IPDI for a surviving spouse: NO IHT until the spouse dies (IHT on the spouse's death may use the transferable NRB and spousal exemption on the first death — potentially eliminating IHT entirely); (5) THE SPOUSAL EXEMPTION WITH IPDI: if the life tenant is the surviving spouse or civil partner of the deceased settlor, the spousal exemption in IHTA 1984 s.18 applies — no IHT on the first death. The trust fund remains exempt in the life tenant's estate for spousal exemption purposes because the life tenant is treated as owning it.

IPDIs are used in a range of estate planning scenarios where the testator wants to provide income for one person during their lifetime while preserving the capital for others: (1) PROTECTING THE SURVIVING SPOUSE ON FIRST DEATH — SECOND MARRIAGE SCENARIOS: the classic use of an IPDI is where the testator has children from a previous relationship. The will creates an IPDI for the surviving spouse (wife/husband/civil partner): (a) the spouse receives income from the estate for their lifetime; (b) on the spouse's death, the trust capital passes to the children from the first marriage (the 'remaindermen'); (c) the children are protected — the spouse cannot spend or give away the capital; (d) the IHT is deferred until the spouse's death, and the transferable NRB can be claimed on second death; (2) CARE HOME FEE PROTECTION — TENANTS IN COMMON STRUCTURE: where a couple own their home as tenants in common (often after severing a joint tenancy), the first to die can leave their share of the property on an IPDI for the surviving spouse. The deceased's share (typically 50%) is held in trust: (a) the spouse can remain in the property under the IPDI (their occupation right); (b) the deceased's share is NOT in the surviving spouse's estate for care home means-testing purposes in theory (though the life interest value may be assessed by local authorities — see asset protection will trust guidance); (c) on the spouse's death, the deceased's share passes to the children; (3) DISABLED PERSON'S IPDI: an IPDI created for a disabled person (as defined in IHTA 1984 s.89B) has additional protections — the trust fund is in the disabled person's estate for IHT, no periodic charges, and certain income tax/CGT reliefs apply; (4) BEREAVED MINOR'S TRUST vs IPDI: an IPDI for a child who has not yet reached 18 can become a bereaved minor's trust — giving the child a vested right to the income from birth (or the parent's death). For minor beneficiaries, there are specific trust regimes. An IPDI for a child over 18 is treated as a standard IPDI; (5) WHAT AN IPDI CANNOT DO: the key limitation of an IPDI compared with a discretionary trust is that the life tenant has a fixed right to all income — the trustees cannot retain income, accumulate it, or divert it to other beneficiaries. If flexibility is the priority (e.g. beneficiaries' needs are uncertain, or the testator wants different amounts paid to different family members), a discretionary trust may be more appropriate — despite the periodic charge cost.

Capital Gains Tax treatment differs significantly between an IPDI and a discretionary trust: (1) CGT ON SETTING UP AN IPDI: when assets are transferred into a trust on death, there is no CGT — the normal death uplift applies (the assets are rebased to their market value at death — TCGA 1992 s.62). This applies equally to IPDIs and discretionary trusts. The assets enter the trust at market value on death; (2) CGT WITHIN AN IPDI TRUST — ANNUAL EXEMPT AMOUNT: for an IPDI trust: (a) the trust has its own CGT annual exempt amount (half the individual's amount — currently £3,000 for 2025-26 since the AEA for individuals is £3,000; trustees get the same £3,000 in 2025-26); (b) trust CGT rates are 18% (basic rate) and 24% (higher rate) on gains, since the Autumn Budget 2024 changes; (3) CGT ON THE LIFE TENANT'S DEATH: when the IPDI life tenant dies, there is a CGT-free uplift on the trust assets — they are rebased to market value at the life tenant's death (TCGA 1992 s.73). This is a significant advantage. Any accrued gains within the IPDI trust are wiped out on the life tenant's death. Discretionary trusts also get this uplift on the death of the life tenant if there is one; (4) PRINCIPAL PRIVATE RESIDENCE RELIEF IN AN IPDI: if the IPDI trust holds a residential property that the life tenant occupies as their main residence, Principal Private Residence (PPR) relief is available on any gain on that property — because the life tenant is treated as having the occupation interest. This is a very valuable relief for property IPDIs; (5) DISCRETIONARY TRUST CGT COMPARISON: discretionary trusts: (a) do NOT benefit from PPR relief unless the trustees allow a specific beneficiary to occupy the property (which may convert it to an IPDI); (b) may hold the assets for many years with growing embedded gains; (c) gains on disposals are charged at 28% (residential property) or 20% (other assets) — same rate as IPDIs. The rebasing on death of the life tenant also applies to discretionary trusts without a life tenant, on the death of a beneficiary who had been given a life interest by the trustees.

An IPDI trust has ongoing administration requirements during the life tenant's lifetime and a distinct process when the life tenant dies: (1) TRUST REGISTRATION — TRS: all IPDIs must be registered with HMRC's Trust Registration Service (TRS) within 90 days of creation (i.e. 90 days after the deceased's death for a testamentary IPDI). Failure to register is a civil penalty offence; (2) SELF-ASSESSMENT — SA900 TRUST TAX RETURN: the trustees must file annual self-assessment returns (form SA900 — Trust and Estate Tax Return) if the trust has: (a) income above £100 per annum; (b) or capital gains. Trustees pay income tax on trust income at the basic rate (20% for non-dividend income; 8.75% for dividend income in an IPDI — the life tenant then reclaims the excess or pays additional tax via their own SA return); (3) INCOME TAX POSITION OF THE LIFE TENANT: the life tenant of an IPDI is entitled to all income arising within the trust (after deduction of trust expenses and trustees' tax). The income is treated as the life tenant's own income — it is included in their personal income tax position. The life tenant receives a certificate from the trustees showing the income and tax credit; (4) WHEN THE LIFE TENANT DIES — THE SETTLEMENT: on the life tenant's death: (a) the IPDI ends; (b) the trust fund passes to the remaindermen (typically children) either outright or in further trust; (c) the trustees must file a final SA900 for the year of death; (d) the IHT attributable to the trust fund is calculated as part of the life tenant's death estate — the trustees are responsible for paying the IHT share referable to the trust; (e) the trustees may claim the CGT uplift to rebase the trust assets to market value at the life tenant's death (TCGA 1992 s.73); (5) VARIATION TO END THE IPDI: the life tenant can, with the consent of the remaindermen (if they are adults of full capacity), vary the IPDI trust to accelerate the distribution to the remaindermen. This may be done by deed of variation or deed of appointment within the trustees' powers. The life tenant's interest terminates immediately — the IHT treatment on termination during lifetime is a potentially exempt transfer (PET) of the trust fund into the remaindermen's estates. If the life tenant survives 7 years, no IHT arises; if not, the gift is brought back into the estate.