Deeds of Variation on Landlord Estates: The 2-Year Window to Re-Plan

The deed of variation under section 142 of the Inheritance Tax Act 1984 is, alongside the spouse exemption and the seven-year clock, one of the three most powerful IHT mitigation tools that UK estate planning offers. It is also the most under-used on landlord estates, because the families who could benefit from it most rarely hear about it in time. The 2-year window from death is strict; it does not re-open once closed. The decision to vary, or not, has to be made within that window, against a much fuller picture of the inherited estate than was visible to the deceased when the will was drafted.

This page treats the deed of variation as a tax-planning question, not a will-writing question. The mechanic is straightforward: a beneficiary of the deceased's estate writes a document redirecting part or all of their inheritance to a different recipient, includes the express election that s.142 IHTA 1984 (and, separately, s.62(6) TCGA 1992 for the CGT side) is to apply, and the redirection reads back to the deceased for tax purposes. The trade-offs, the worked examples, and the deed-contents checklist below are where the value lies.

For the wider planning framework on landlord IHT, see An IHT Decision Framework for UK Landlords. The companion lifetime route (the 7-year clock on a planned gift) is at The 7-Year Clock for Mid-Life Landlords. The pillar guide to inheritance tax on rental property is at Inheritance Tax on Rental Property Portfolios.

The mechanic in one paragraph

Section 142(1) IHTA 1984 says: where, within 2 years after a person's death, an instrument in writing is made by which any of the dispositions effected by the will or intestacy are varied, and the instrument contains a statement that s.142 is to apply, the variation is treated for IHT as if it had been effected by the deceased. The matching CGT provision is at s.62(6) TCGA 1992: where the variation satisfies the s.142 conditions and contains a separate express election, the disposal of the relevant asset is treated as a disposal by the deceased, not by the original beneficiary. The two elections are independent. The s.142 election covers IHT; the s.62(6) election covers CGT; either or both may be made on the same deed. The no-consideration rule (s.142(3)) destroys the read-back where the variation is made for any monetary or other consideration other than another variation of dispositions in the same estate.

The deed itself is a private document between the parties. It does not need court approval, except where an original beneficiary lacks capacity or is a minor. It does not need executor consent, except where the variation increases the IHT payable. It does not need to be lodged with HMRC at the time of execution; the executors notify HMRC by sending a copy of the deed with the IHT100 (where the variation creates a new IHT charge) or by attaching it to the IHT400 (where the variation forms part of the death-estate computation).

Why the deed of variation is under-used on landlord estates

Three reasons account for most of the missed windows on landlord estates.

One, the standard post-death adviser is a probate or will-writing practitioner whose default frame is to get the estate distributed in line with the will. The deed-of-variation question often does not come up because the family is not led to it. By the time a tax-planning adviser is consulted (typically when the family is dealing with a second life event a year or two later) the 2-year window has often closed.

Two, the landlord-specific decisions on a deceased estate involve more than one tax. IHT on the death estate. CGT on any onward disposal by the inheriting beneficiary. Income tax on the BTL going forward (the inheriting beneficiary may face a higher marginal rate than the deceased did, changing the after-tax return on the portfolio). SDLT where the redirection involves debt assumption. Most generic deed-of-variation explainers cover the IHT angle only and miss the cross-tax interaction.

Three, the choice of whether to vary, and how, requires a structured second-look at the inherited estate against criteria that the deceased themselves did not have full visibility on when the will was drafted. The will reflects the deceased's view at the time of drafting. The inheriting beneficiaries have a different view, with another decade or two of family change visible to them. The deed of variation is the mechanism for re-planning against the more up-to-date view. Few families systematically do that second-look exercise; the result is decisions made by inaction.

Worked example one: generation-skipping a £400,000 BTL

The Patel-estate persona. Mr Patel dies aged 72, leaving an estate of £1.8 million. The estate breaks down as: family home £750,000, BTL portfolio of three properties totalling £900,000, ISAs and cash £150,000. His will leaves the entire estate to his surviving spouse Mrs Patel under the s.18 spouse exemption. Mrs Patel is 70, has her own estate of £1.1 million (her share of the family home is included separately), and is in good health. Their two adult children are 42 and 45, both with their own established careers.

Without intervention, the s.18 spouse exemption defers all first-death IHT. Mrs Patel's consolidated estate at second death (assuming property growth and depending on the order of deaths) would be in the order of £3.2 million. RNRB is fully tapered out at £2.7 million-plus. The second-death IHT exposure on Mrs Patel's estate, against £650,000 of combined NRB plus the transferred RNRB (lost to taper), is on the order of £1.0 million.

The variation. Within 18 months of Mr Patel's death, Mrs Patel executes a deed of variation redirecting one £400,000 BTL property from her to the two adult children in equal shares. The deed includes the s.142 IHT election and the s.62(6) CGT election. The redirected property is treated for IHT as having gone from Mr Patel directly to the adult children. The s.18 spouse exemption does not apply to that £400,000 portion (since the variation reads back to the deceased, the redirected disposition is treated as a chargeable transfer from Mr Patel to non-spouse beneficiaries). Against Mr Patel's £325,000 NRB plus £175,000 RNRB (the redirected property qualifies because it passes to lineal descendants), the chargeable amount is £400,000 minus £500,000 = nil. No first-death IHT is payable on the redirected portion. The CGT position on the variation: s.62(6) read-back means Mrs Patel does not pay any CGT (the death uplift had already reset the base cost; she held the asset only between death and variation). The adult children inherit the BTL at the date-of-death market value.

Second-death effect. £400,000 of property is now outside Mrs Patel's estate. The second-death IHT saving, at 40% on £400,000, is £160,000. The variation has effectively used Mr Patel's unused NRB and RNRB on first death to remove £400,000 of property from the eventual second-death taxable estate.

Worked example two: triggering the 36% charitable rate

The O'Connell-estate persona. Mrs O'Connell dies aged 82, leaving an estate of £2.4 million. Her husband predeceased her by 12 years; the second-death scenario applies. The estate breaks down as: family home £600,000, BTL portfolio of four properties totalling £1.5 million, investment portfolio £300,000. Her will leaves the entire estate equally to her three adult children. She had no charitable bequests in the will.

Without intervention, the chargeable estate is £2.4 million less Mrs O'Connell's NRB £325,000 less her late husband's transferred NRB £325,000 (claimed on IHT402 within 2 years of second death). Total NRB available £650,000. Chargeable estate £1.75 million. RNRB and TRNRB are tapered out at the £2.4 million estate value (the £2 million threshold is breached by £400,000, withdrawing £200,000 of combined RNRB, leaving £150,000; but the residence value £600,000 is less than the available RNRB, so the residence consumes all the available RNRB; the net chargeable estate is £1.6 million). IHT at 40% on £1.6 million = £640,000.

The variation. The three adult children, within 18 months of their mother's death, execute a joint deed of variation redirecting £160,000 of the residue (10% of the £1.6 million chargeable baseline after NRB and RNRB) to a UK-registered charity, with the s.142 election. The variation triggers the Sch 1A 36% reduced rate on the entire chargeable estate. The new IHT computation: 36% of £1.44 million (the chargeable estate after deducting the £160,000 charitable bequest) = £518,400.

The maths. Without the variation, the children would have received £2.4 million minus IHT £640,000 = £1.76 million between them. With the variation, the children receive £2.4 million minus £160,000 charity minus IHT £518,400 = £1.72 million between them. Net cost to the children of the charitable gift: roughly £40,000 across the three of them (about £13,000 each). The charity receives £160,000. The Treasury collects £121,600 less than it would have done. The trade-off is family-dependent; for many families the £13,000-each cost is a price they are willing to pay to direct £160,000 to a cause the deceased had supported in life, and the variation is a way of doing it within the tax-efficient window. For the underlying Sch 1A mechanics (10% test, baseline amount, three-component test, merger election), see our forthcoming page on the Charitable Legacy 36% Rate (Wave 4 C9).

Worked example three: equalising NRB use across a couple

The Harrison-estate persona. Mr Harrison dies aged 78, leaving an estate of £1.6 million entirely to his wife Mrs Harrison under the s.18 spouse exemption. Mrs Harrison is 76, has her own estate of £600,000, and is expected to outlive her husband by 5 to 10 years. The combined estate at her death will be in the order of £2.3 million (assuming property growth). The £2 million RNRB taper threshold will be breached; combined RNRB withdrawn will be £150,000, leaving £200,000 combined RNRB available against the residence value of around £800,000.

Without intervention. First-death IHT: nil (full s.18 exemption). Second-death chargeable estate: £2.3 million less Mrs Harrison's NRB £325,000 less transferred NRB £325,000 less combined RNRB £200,000 = £1.45 million. IHT at 40% = £580,000.

The variation. Within 2 years of Mr Harrison's death, Mrs Harrison executes a deed of variation redirecting £325,000 of the BTL portfolio (one of the smaller BTL flats valued at £325,000) from her to a discretionary trust for the benefit of the adult children and grandchildren, with the s.142 IHT election and the s.62(6) CGT election. The redirected disposition is treated as a chargeable transfer from Mr Harrison to a discretionary trust, but as the amount is exactly the NRB, no first-death IHT is payable (the £325,000 is within Mr Harrison's NRB). The £325,000 of property is now outside Mrs Harrison's estate.

Second-death effect. Mrs Harrison's estate at second death is now approximately £1.975 million (the original £2.3 million minus the £325,000 redirected). The estate is below the £2 million taper threshold, so RNRB is preserved in full: Mrs Harrison's RNRB £175,000 plus transferred RNRB £175,000 = £350,000 available. NRB position: Mrs Harrison's own NRB £325,000 plus transferred NRB nil (used up on the first-death variation) = £325,000. Chargeable second-death estate: £1.975 million minus £325,000 NRB minus £350,000 RNRB = £1.3 million. IHT at 40% = £520,000. Saving against the no-variation case: £60,000. The variation has also moved £325,000 of growth in property value into the discretionary trust where it can be managed for the next generation, with the s.260 holdover option available on any future trust distributions.

The no-consideration rule and what destroys the read-back

Section 142(3) destroys the s.142 read-back where the variation is made for any monetary or other consideration other than another variation of dispositions in the same estate. Three patterns catch families.

One, side payments. The original beneficiary varies the inheritance to a third party; the third party pays the original beneficiary cash or other value in return. The variation becomes a sale; full IHT (on the deceased's estate as originally distributed to the original beneficiary) and CGT (on the sale by the original beneficiary to the third party) consequences follow.

Two, reciprocal benefits across separate estates. Sibling A varies their inheritance from estate X to sibling B, in exchange for sibling B varying their inheritance from estate Y back to sibling A. The two variations are arranged as a swap. HMRC's view: the swap is consideration, the no-consideration rule fails, both read-backs are destroyed. The exception is variations within the same estate; a family re-allocating the deceased's bequests among themselves is explicitly permitted.

Three, undocumented family understandings. The variation is recorded on paper as a clean redirection, but the family has a private understanding that the original beneficiary will receive some compensating benefit later (a cash payment, a transfer of another asset, an undertaking to support the original beneficiary financially). If the side understanding comes to light (most often during an HMRC enquiry triggered by a separate estate matter), the original variation can be retrospectively re-characterised. The fix is discipline: variations are documented as standalone redirections, with no side correspondence and no future understanding committed to writing or behaviour.

The standard practice on a deed-of-variation arrangement is to take written legal advice on the absence of consideration and to retain that advice with the deed itself. The standard query from HMRC where a variation is examined years later is whether anything was given in return for the redirection.

What the deed must contain

HMRC's IOV2 Instrument of Variation Checklist is the practical benchmark. Six items, all of which the deed must clearly evidence:

1. The s.142 IHTA 1984 election. Express words stating that s.142 is to apply to the variation. Without this election, the redirection is a fresh PET by the original beneficiary, not a read-back to the deceased. The election is not implied; it must be stated. Standard formulation: "The parties elect that section 142 of the Inheritance Tax Act 1984 shall apply to this variation."
2. The s.62(6) TCGA 1992 election (where CGT read-back is wanted). A separate express election. The two elections are independent; the s.142 election does not include the s.62(6) election. Where the variation redirects a chargeable asset (BTL property, investment portfolio, business interest), the s.62(6) election is usually wanted to avoid the original beneficiary facing a CGT bill on the redirection.
3. Clear identification of the original disposition and the redirected disposition. Reference the deceased's name, date of death, will (or intestacy rule), the original beneficiary (or beneficiaries), the original disposition (specific asset or share of residue), the new recipient (or recipients), and the new disposition.
4. Signatures of all original beneficiaries whose inheritance is being redirected. Where an original beneficiary lacks capacity or is a minor, court approval is required. Where the variation increases IHT, executors' signatures are also required.
5. Execution as a deed. Witnessed signatures, expressed to be a deed (the deed form is required for the variation to bind the original beneficiary in property law terms).
6. A statement on consideration. An express statement that no consideration has been given for the variation, other than (where applicable) another variation of dispositions in the same estate. The statement protects against later questions and supports the no-consideration discipline.

The deed is then retained with the deceased's estate file. Executors send a copy to HMRC where the variation affects the IHT due on the death estate (either by reducing IHT in a Sch 1A 36% case, or by increasing IHT in a redirection-out-of-spouse case). For a variation that has no IHT effect (a redirection within the NRB), the deed is held on file by the executors but is not always sent to HMRC at the time; it is produced on enquiry.

Where the deed of variation does not help

Three situations where the deed of variation is the wrong tool.

One, gifts the deceased made in lifetime. The deed of variation operates on the death estate, not on the deceased's lifetime gifts. A lifetime PET made by the deceased that has not cleared the 7-year clock at death comes into the IHT cumulation and the variation cannot move it out of cumulation. The lifetime gift was a disposition by the deceased, and only by surviving 7 years did the deceased's family have an answer to it; the deed of variation is not that answer.

Two, situations where the deceased's full intent should be preserved. The deed of variation requires the original beneficiary's consent to redirect. Where the deceased intended to disinherit a particular person, varying the will against that intent on tax grounds is a family decision, not a tax decision. The legal position is that the original beneficiary can vary at their discretion (subject to the no-consideration rule); the ethical position is for the family.

Three, where the 2-year window has closed. Once 2 years have passed from the date of death, s.142 is no longer available. Subsequent redirections by the original beneficiary are PETs (subject to the 7-year clock the original beneficiary themselves must survive) and CGT disposals (subject to s.17 connected-persons market value). The lifetime-gift route is then the relevant tool, with all the dry-CGT considerations covered on our companion page at The 7-Year Clock for Mid-Life Landlords.

For the wider planning lens that connects all the post-death and pre-death routes, see An IHT Decision Framework for UK Landlords. For the pension-overlay on landlord estates from April 2027, see Pensions in IHT from April 2027.