Deed of Variation -- IHT Estate Planning Tool 2026

A deed of variation is one of the most powerful and flexible tools available to families after a bereavement. It allows beneficiaries to rewrite the terms of a will -- or the intestacy rules -- as if the deceased had made different decisions from the start. Used correctly, it can cut an inheritance tax bill significantly, preserve the residence nil-rate band, and redirect wealth to where it is needed most.

What Is a Deed of Variation?

A deed of variation (sometimes called a deed of family arrangement) is a legal document signed by one or more beneficiaries who agree to redirect all or part of their inherited entitlement to someone else. Crucially, for tax purposes HMRC treats the variation as if the deceased had written the will that way in the first place. This means the original beneficiary does not make a gift -- there is no seven-year clock, no potentially exempt transfer (PET), and no CGT disposal by the redirecting beneficiary.

The rule is set out in section 142 of the Inheritance Tax Act 1984 and section 62(6) of the Taxation of Chargeable Gains Act 1992. The deed must contain a specific written election to invoke these provisions -- without it, the tax treatment does not apply. Many otherwise well-drafted deeds have failed to deliver IHT savings simply because the election wording was missing or ambiguous.

A deed of variation can also be used where someone dies intestate (without a will). The intestacy rules dictate who inherits, but a deed can redirect those entitlements in exactly the same way as if a will existed.

The Two-Year Time Limit

The deed must be signed and executed within two years of the date of death. The clock starts from the date of death, not from probate or from when assets are distributed. Missing this window means the redirect is treated as a gift from the beneficiary, bringing all the usual IHT and CGT consequences.

There is no discretion for HMRC to allow late deeds, so families should seek legal advice promptly after a bereavement. In practice the two-year window is generous, but estates with complex assets, multiple jurisdictions, or disputes among beneficiaries can easily consume most of this time.

It is worth noting that the deed does not need to be registered with any court or HMRC before the deadline -- it simply needs to be executed (signed and dated) within two years. Copies should then be sent to HMRC and any relevant registries.

Who Must Sign?

Every beneficiary who is giving up an entitlement must sign the deed. If a beneficiary receives an increased share, they do not need to sign unless they are also giving something up. If a beneficiary is a minor (under 18), the court must usually approve the variation because minors cannot contract. A beneficiary who lacks mental capacity cannot sign, and again court approval via the Court of Protection is needed. Both processes can take several months, so early planning is essential where vulnerable beneficiaries are involved.

If the variation increases the IHT payable on the estate, HMRC must also be a party to the deed. In practice this is unusual -- most deeds are structured to reduce tax rather than increase it. HMRC does not need to be a party simply because it approves the arrangement; their involvement is only required where the variation actually increases the tax due.

IHT and CGT Treatment

For IHT, the redirected assets are treated as if they passed directly from the deceased to the new beneficiary. The original beneficiary has no chargeable transfer and no PET to worry about. This is the key advantage over a lifetime gift: a straightforward gift would start a seven-year clock, and if the donor died within seven years the gift could fall back into the estate and create an IHT liability.

For CGT, the original beneficiary is treated as never having received the asset. There is no disposal by them, and the new beneficiary takes the asset at its probate value -- the same base cost they would have received had the will named them originally. This makes deeds of variation particularly useful for assets that have appreciated since death, because the original beneficiary avoids any gain on an asset they technically never owned.

One important limitation: the section 142 treatment only applies once. An asset that has already been varied once cannot be varied again with the same tax treatment. Planning should therefore be comprehensive from the outset.

Redirecting to Charity -- the 36% IHT Rate

One of the most tax-efficient uses of a deed of variation is redirecting part of the estate to charity. If at least 10% of the net estate (the estate after deducting the nil-rate band and liabilities) passes to qualifying charities, the IHT rate on the whole taxable estate drops from 40% to 36%.

The calculation can be complex, and there are three components of the estate (the settled property component, the survivorship component, and the general component) that can be merged or treated separately. A tax adviser should run the numbers before committing to a charitable redirect, because the 4% rate reduction must exceed the value donated for the strategy to produce a net benefit. There is a tipping point below which the donation costs the family more than the tax saving.

Only UK registered charities and certain EU, EEA, and Commonwealth charities qualify for this relief. The charity must be specified in the deed.

Interaction with the Nil-Rate Band and Residence Nil-Rate Band

The nil-rate band (NRB) in 2026/27 is GBP 325,000. The transferable NRB allows a surviving spouse to inherit any unused portion from their late partner, potentially giving a combined NRB of GBP 650,000.

The residence nil-rate band (RNRB) adds a further GBP 175,000 per person where a qualifying residence passes to a direct descendant (children, grandchildren, step-children). The combined RNRB for a couple can be GBP 350,000, giving a total potential exemption of GBP 1,000,000 for a married couple with a qualifying home.

The RNRB is tapered by GBP 1 for every GBP 2 that the estate exceeds GBP 2,000,000, and it is withdrawn entirely above GBP 2,350,000 for an individual. A deed of variation can rescue a lost RNRB. If a will leaves the family home to a sibling rather than a child, the RNRB is not available. A deed redirecting the property to a direct descendant restores the relief and can save up to GBP 70,000 in IHT (GBP 175,000 x 40%).

Practical Example -- GBP 800,000 Estate

Consider an estate worth GBP 800,000 comprising a house valued at GBP 450,000 and cash of GBP 350,000. The deceased was widowed and leaves everything to his two adult children equally under his will.

Without any variation, the IHT calculation runs as follows. The available NRB is GBP 325,000 (assuming the spouse's NRB was fully used on first death). The RNRB of GBP 175,000 applies because the house passes to the children. Total exemptions are GBP 500,000. The taxable estate is GBP 300,000. IHT at 40% is GBP 120,000. The net estate to the children is GBP 680,000.

Now suppose the children execute a deed of variation redirecting GBP 50,000 of their inheritance to a registered charity. The net estate after deducting the NRB and RNRB is GBP 300,000. Ten percent of GBP 300,000 is GBP 30,000, so donating GBP 50,000 comfortably exceeds the 10% threshold and triggers the 36% rate.

With the charitable redirect, GBP 50,000 is exempt as a charitable gift, leaving GBP 250,000 taxable. IHT at 36% on GBP 250,000 is GBP 90,000, a saving of GBP 30,000 compared with the original bill of GBP 120,000. The children give up GBP 50,000 but save GBP 30,000 in tax -- the net cost of the donation is only GBP 20,000, while the charity receives GBP 50,000. This represents excellent leverage on charitable giving.

When NOT to Use a Deed of Variation

A deed of variation is not always the right tool. Situations where it may be unhelpful or unsuitable include:

The redirecting beneficiary is elderly or in poor health and needs the capital themselves. Giving away an inheritance can create financial hardship, and unlike a lifetime gift the variation is irrevocable once signed.

The new beneficiary has significant debts or is in receipt of means-tested benefits. An inheritance could disqualify them from benefits, and a redirect might simply transfer this problem.

The estate is comfortably within the nil-rate band. If no IHT is payable in any case, there is no tax benefit to a variation -- though there may still be family planning reasons to redirect assets.

The redirected asset is business property or agricultural property already qualifying for 100% relief. The IHT liability is already zero, so changing who receives the asset has no IHT benefit.

A redirect involving land or property must be reviewed for SDLT implications. In some circumstances a variation can be treated as a land transaction, triggering SDLT, particularly if a beneficiary receives a different property from the one originally left to them.

Deed of Variation vs Other Estate Planning Tools

A deed of variation is a post-death tool, which makes it fundamentally different from lifetime planning strategies. The key advantage is that it requires no planning by the deceased and can be executed quickly after death. However, it depends entirely on the beneficiaries agreeing to give up part of their inheritance -- something families do not always find easy to negotiate.

Lifetime tools such as trusts, gifts out of surplus income, business property relief, and pension nominations can be more effective because they are planned in advance. A discretionary will trust drafted before death gives trustees ongoing flexibility to distribute to beneficiaries over time, whereas a deed of variation is a one-off fix.

For larger estates, a combination approach often works best. The deceased uses lifetime planning to reduce the estate, and the family uses a deed of variation after death to tidy up any remaining tax exposure or take advantage of reliefs that were not fully claimed.

Practical Steps for Executing a Deed

Obtain probate and a full schedule of assets and their values as at the date of death. Instruct a solicitor or tax adviser experienced in IHT to draft the deed. Ensure the deed contains the correct IHTA 1984 s.142 and TCGA 1992 s.62(6) elections.

Have all affected beneficiaries sign, and if minors are involved seek court approval early as this can add months to the process. Send a copy to HMRC and to any other relevant registry (for example Land Registry if property is being redirected). If SDLT or land registration is involved, ensure the correct notifications are made within the relevant deadlines.

The cost of a deed of variation typically ranges from GBP 500 to GBP 2,000 in legal fees depending on complexity. This is excellent value when the IHT saving runs into tens of thousands of pounds. The most expensive variation is the one that is not done -- families who miss the two-year window have no recourse.