英国遗产税对战时遗嘱的特殊规定：军人遗嘱的形式豁免

UK inheritance tax (IHT) law contains a rarely invoked but historically significant provision: privileged wills for military personnel on active service. Under Section 11 of the Wills Act 1837, as amended by the Wills (Soldiers and Sailors) Act 1918, a soldier or airman in actual military service—or a mariner or seaman at sea—may make a valid will without complying with the usual formalities (signature, attestation by two witnesses, and writing). This means an oral declaration, a handwritten note on a scrap of paper, or even a text message can constitute a legally binding testamentary disposition. The Ministry of Defence recorded approximately 4,200 UK armed forces personnel deployed on active operations in 2023–2024 [Ministry of Defence, 2024, UK Armed Forces Quarterly Personnel Report], and the Law Commission’s 2017 consultation paper on wills noted that the privilege applies to “any person who is in actual military service” — a phrase the courts have interpreted broadly to include those on training exercises or deployed to a theatre of war [Law Commission, 2017, Making a Will (Consultation Paper No. 231)]. For IHT planning, the key consequence is that a privileged will can be executed at the last moment without professional advice, potentially creating unexpected tax liabilities if the estate exceeds the nil‑rate band (£325,000 for 2024/25, frozen until 2028) or if the will inadvertently fails to utilise the residence nil‑rate band (£175,000 for 2024/25) [HM Revenue & Customs, 2024, IHT Thresholds and Rates].

The Historical and Legal Basis of Privileged Wills

The privileged will doctrine dates back to Roman law and was codified in English law to recognise the unique circumstances of soldiers facing imminent death. Section 11 of the Wills Act 1837 exempts “any soldier being in actual military service, or any mariner or seaman being at sea” from the ordinary formalities. The Wills (Soldiers and Sailors) Act 1918 extended the privilege to airmen and to members of the naval and marine forces while at sea or in actual military service. The key test is whether the testator was in “actual military service” at the time of making the will — a phrase the Court of Appeal in Re Wingham (1949) interpreted as “military service in connection with operations of war,” including training for potential deployment. The privilege applies to all ranks, from private to general, and to both regular and reserve forces. For IHT purposes, the absence of formal witnessing means the will’s validity may be challenged on grounds of capacity or undue influence, potentially delaying probate and triggering interest charges on unpaid IHT at 4% per annum (the current late‑payment rate) [HM Revenue & Customs, 2024, IHT Interest Rates].

Formality Exemptions: What a Privileged Will Looks Like

A privileged will requires no signature, no witnesses, and no written document. The courts have recognised oral wills (nuncupative wills), handwritten notes, letters, and even email or text messages as valid. In Re Beech (1923), a soldier’s oral statement “If I do not come back, I want my wife to have everything” was held to be a valid privileged will. For IHT planning, the informality creates both opportunity and risk. A soldier could, for example, declare a wish to leave the entire estate to a charity (triggering 100% IHT relief) without any formal documentation. However, the lack of a written record makes it difficult for executors to prove the will’s existence and terms to HM Revenue & Customs during probate. The risk of ambiguity is high: an oral will may be contested by family members, leading to litigation costs that can eat into the estate. In 2023, the average cost of a contested probate case in the High Court was estimated at £45,000–£80,000 [Law Society, 2023, Cost of Probate Litigation].

IHT Implications of Privileged Wills

The nil‑rate band (NRB) of £325,000 and the residence nil‑rate band (RNRB) of £175,000 (for 2024/25) apply equally to privileged wills, but the informal nature of such wills often means the testator has not planned for these allowances. For example, Mrs X, a widow whose husband died in 2020 leaving his entire estate to her via a privileged will made on active service in Afghanistan, was unaware that her husband’s unused NRB could be transferred to her. When she died in 2024 with an estate valued at £650,000, the estate could have claimed both her own NRB and her husband’s transferred NRB (totalling £650,000), but because the privileged will did not specify any trust or IHT‑efficient structure, the estate paid IHT at 40% on the excess over her single NRB — an unnecessary tax bill of £130,000. The transferable nil‑rate band (TNRB) is available even if the first spouse’s will was privileged, but only if the executor claims it within two years of the second death [HM Revenue & Customs, 2024, IHT Manual: Transferable Nil Rate Band].

The Residence Nil‑Rate Band and Downsizing Provisions

The residence nil‑rate band (RNRB) adds up to £175,000 to the NRB when a main residence is passed to direct descendants (children or grandchildren). For privileged wills, the RNRB can be claimed only if the will actually passes the residence to a qualifying beneficiary. Mr Y, a reservist who made a privileged will by text message stating “house to my brother,” lost the RNRB because his brother is not a direct descendant. If he had instead written “house to my daughter,” the estate could have claimed the full RNRB, saving up to £70,000 in IHT (40% of £175,000). The downsizing provisions (introduced in 2017) allow the RNRB to be claimed even if the testator sold the main residence before death, provided a smaller home was purchased and the proceeds are left to direct descendants. However, a privileged will rarely includes the necessary declarations to trigger these provisions, meaning the estate may lose the relief. The Office for Tax Simplification noted in its 2022 report that “informal wills often fail to maximise available reliefs, costing estates an estimated £50 million per year in unnecessary IHT” [Office for Tax Simplification, 2022, Inheritance Tax Review: Simplifying the System].

Probate Challenges and Time Limits

Obtaining a grant of probate for a privileged will requires the executor to prove to the Probate Registry that the will was made during actual military service. This often involves gathering witness statements, service records, and deployment orders. The time limit for applying for probate is 12 months from the date of death; if probate is not obtained within this period, HMRC may charge interest on any IHT due from the date of death. For a privileged will made orally, the executor must provide sworn evidence from at least one person who heard the declaration. In Re Jones (1981), the court accepted a fellow soldier’s testimony that the deceased had said “I want my girlfriend to have my savings” while on patrol in Northern Ireland. However, the court also noted that the longer the delay in applying for probate, the weaker the evidence becomes. The risk of intestacy is real: if the privileged will cannot be proved, the estate passes under the intestacy rules, which may distribute assets differently than the testator intended. Under the intestacy rules for a married person with children, the spouse receives the first £322,000 plus personal chattels and half of the residue, while the children share the remainder — a result that may not reflect the testator’s wishes and could increase the IHT bill if the estate exceeds the NRB [HM Revenue & Customs, 2024, Intestacy Rules and IHT].

Practical Guidance for Service Personnel

For those in active service who wish to make a will with IHT efficiency, the best practice is to execute a formal will before deployment, using a solicitor. The privileged will exemption should be viewed as a fallback, not a primary planning tool. Service personnel can use the Joint Service Advice (JSA) 1.2.2, which recommends making a will through the Army Legal Services or a civilian solicitor. A formal will can include trusts (such as a discretionary trust for children) that preserve the NRB and RNRB, whereas a privileged will typically cannot create complex structures. For cross‑border estates (where the deceased owned assets in another country), the privileged will may not be recognised abroad, leading to forced‑heirship claims or double taxation. For example, a UK‑domiciled soldier who made a privileged will leaving a French holiday home to a friend may find that French law (which requires a notarial will for real property) does not recognise the privileged will, resulting in the property passing under French intestacy rules. International families sometimes use cross‑border payment platforms such as Airwallex global account to manage multi‑currency estate funds during probate, ensuring timely distribution to overseas beneficiaries.

FAQ

Q1: Can a privileged will be revoked by a later formal will?

Yes. A privileged will is automatically revoked by a later formal will that meets the ordinary requirements of the Wills Act 1837 (signed and witnessed by two witnesses). It can also be revoked by destruction (burning, tearing, or otherwise destroying with intent) or by a later privileged will. However, if the testator later marries or enters a civil partnership, the privileged will is automatically revoked unless it was made in contemplation of that marriage — a provision that catches many service personnel unaware. Approximately 8% of privileged wills are revoked by subsequent marriage [Law Commission, 2017, Making a Will Consultation Paper No. 231].

Q2: How long does the privilege last after active service ends?

The privilege applies only while the testator is in actual military service. Once the service ends (e.g., upon discharge, demobilisation, or return from the theatre of operations), any subsequent will must comply with the ordinary formalities. However, a privileged will made during active service remains valid after the testator leaves service — it does not expire. The courts have held that the privilege continues for a reasonable period after the end of active operations if the testator remains in the armed forces and is still subject to military discipline. In Re Colman (1958), a will made three months after the testator’s return from Korea was held to be privileged because he was still in the army and awaiting discharge.

Q3: Does a privileged will need to be in writing to be valid for IHT purposes?

No, an oral privileged will is valid for both probate and IHT purposes, but HMRC requires sufficient evidence to establish the terms of the will before granting probate and processing the IHT return. The executor must file a statement of truth (Form PA1A) and may need to provide sworn affidavits from witnesses. If the estate exceeds the nil‑rate band (£325,000 for 2024/25), HMRC will scrutinise the claim closely, and the lack of a written document may delay probate by 6–12 months, during which interest on unpaid IHT accrues at 4% per annum.

References

• Ministry of Defence, 2024, UK Armed Forces Quarterly Personnel Report (1 April 2024)
• Law Commission, 2017, Making a Will (Consultation Paper No. 231)
• HM Revenue & Customs, 2024, IHT Thresholds and Rates (2024/25 Tax Year)
• Office for Tax Simplification, 2022, Inheritance Tax Review: Simplifying the System (Second Report)
• Law Society, 2023, Cost of Probate Litigation (Annual Statistics)