What Is a Deed of Variation and How Does It Work?

A deed of variation is a written document that lets the people inheriting from someone who has died redirect part or all of what they receive to somebody else. If it is signed within two years of the death and meets the conditions in the Inheritance Tax Act 1984, the law treats the new distribution as if the deceased had arranged it that way from the start.¹ It works whether the deceased left a will or died intestate.

How the Backdating Works

The point of a deed of variation is a legal fiction. When beneficiaries redirect their inheritance through a valid variation, inheritance tax and capital gains tax treat the change as though the deceased had written it into the will, or as though intestacy had always divided the estate that way.¹ The beneficiary giving up assets is not treated as making a gift. The assets are treated as passing straight from the deceased to the new recipient.

That relation-back effect is what makes a deed of variation worth doing. Exemptions and reliefs that apply only to transfers from a deceased person become available after the fact: the spouse exemption, charity relief, nil-rate band allocation, and the reduced 36% IHT rate on estates leaving at least 10% to charity.

You do not strictly need a formal deed. A letter that satisfies all the legal conditions is enough.² Most families use a solicitor-drafted deed anyway, because the wording has to be precise and the document cannot be fixed later.

Why People Use a Deed of Variation

Tax is usually the driver. A beneficiary might redirect their share to the deceased’s surviving spouse to trigger the spouse exemption and remove IHT from that portion entirely. Redirecting to a charity secures full IHT relief and, if the gift reaches 10% of the net estate, cuts the rate on the rest from 40% to 36%.

Family circumstances are the other common reason. A will written ten or fifteen years ago may no longer reflect who needs what. Grown children may be comfortable, grandchildren may have arrived, a partner may have become long-term without being named. A variation lets the beneficiaries reset the distribution without the will’s outdated terms standing as final.

A deed of variation can also bring in people the will or intestacy rules miss entirely, including stepchildren, grandchildren, and unmarried partners. And it can route inheritance into a discretionary trust instead of to a named person, which is useful where the family wants flexibility over time or where a disabled beneficiary needs their inheritance structured to preserve means-tested benefits. For IHT purposes, the deceased is treated as the settlor of such a trust, so periodic charges run from the date of death.

What a Variation Can and Cannot Do

A valid deed of variation can redirect specific assets, change the proportions each beneficiary receives, introduce beneficiaries who were not in the will or entitled under intestacy, and place inheritance into a new or existing trust.

It cannot add assets that were not part of the estate at death. It cannot sidestep the estate’s legitimate debts. And it cannot change who serves as executor or administrator.

Legal Requirements

For the tax backdating to apply, the variation must meet several conditions set out in section 142 of the Inheritance Tax Act 1984.¹

It must be in writing.
It must include an election statement by all relevant parties confirming they intend the variation to be treated as if the deceased had made it. Without this statement, the relation-back treatment fails.
It must be executed within two years of the date of death. There is no extension.²
The beneficiary redirecting their inheritance must not receive money or other consideration in return. The variation must be voluntary.
Every beneficiary whose entitlement is being reduced must sign, and the signatures must be witnessed.

Who Has to Sign

Anyone giving up part or all of their inheritance must sign. Beneficiaries whose share stays the same or increases do not need to sign.

Executors or administrators must sign if the variation increases the inheritance tax the estate has to pay.¹ The executor is personally liable for IHT out of estate funds, so their consent is needed to any change that increases that bill. Where a charity is a new recipient, its representatives should be brought in so the arrangement is on the record with them too.

Minors and Beneficiaries Who Lack Capacity

A beneficiary who is under 18 or who lacks mental capacity cannot have their share reduced by signature alone. A parent or carer cannot sign away another person’s inheritance. If a proposed variation would reduce what a minor or incapacitated beneficiary receives, court approval is required, and the court will usually appoint a litigation friend or guardian to represent that beneficiary’s interests.

This is where variations often stall. The court process adds time and cost. If the two-year deadline is close and a minor’s share is affected, get legal advice early so there is room for the application.

Telling HMRC

Whether HMRC needs a copy depends on the tax effect. If the variation increases the inheritance tax owed by the estate, send a copy of the variation with the completed IOV2 checklist to HMRC within six months of making it.³ If the variation reduces IHT or affects the IHT position of another estate, send a copy for that reason. If the IHT position is entirely unaffected, you do not need to notify HMRC.²

Keep the variation and the IOV2 with the estate papers either way. HMRC can enquire years later.

Irrevocability and the Care-Funding Trap

Once signed, a deed of variation cannot be revoked. The beneficiary who redirected their inheritance has no mechanism to change their mind. A court might set a deed aside on narrow grounds such as fundamental mistake or undue influence, but those cases are rare and expensive. Treat the decision as permanent.

There is also a means-tested benefits risk that catches people out. If a beneficiary gives away an inheritance through a variation and later needs local authority care funding, the authority may treat the variation as a deliberate deprivation of assets and assess the person as though they still held the inheritance. Anyone who may need care in the foreseeable future should think carefully before varying their share away.

A Note for Readers Outside England and Wales

A deed of variation is a tool of the law in England and Wales and some other common-law jurisdictions. The United States has no direct equivalent. The closest American mechanism is a qualified disclaimer under 26 U.S.C. § 2518, which lets a beneficiary refuse an inheritance so that it passes to whoever would have taken had the disclaimant predeceased the deceased.⁴ A disclaimer is narrower than a deed of variation in two ways that matter: the disclaimant cannot choose where the assets go, and the deadline is nine months from the date of death rather than two years.⁵

How to Put One in Place

Start with the deadline. The two-year clock runs from the date of death, not from the grant of probate or the date you learned about the inheritance. If more than eighteen months have passed, treat the matter as urgent.

Instruct a solicitor who works regularly in estates and tax. The election statement and the description of the assets being redirected have to be worded correctly, and because the deed is irrevocable there is no second attempt.

Get the signed consent of every beneficiary whose share is being reduced. If one of them refuses, the variation cannot go ahead over their objection. Where a minor or incapacitated beneficiary is affected, begin the court application as soon as possible.

Once the deed is signed and witnessed, work out whether HMRC needs a copy, and send the variation with the IOV2 within six months if the IHT bill has gone up.³ If land or property has been redirected, update the Land Registry. The estate can then be administered on the varied terms.

1
Legislation.gov.uk. Inheritance Tax Act 1984 Section 142
2
GOV.UK. Change a Will After a Death
3
GOV.UK. IOV2 Instrument of Variation Checklist
4
Office of the Law Revision Counsel. 26 USC 2518 Disclaimers
5
eCFR. 26 CFR 25.2518-2 – Requirements for a Qualified Disclaimer