Why a US revocable living trust can misfire under UK rules

Key takeaways

• A US revocable living trust is primarily an estate-administration tool that allows the grantor to retain control of their assets during their lifetime while providing continuity on incapacity and avoiding probate on death.
• There is no automatic UK classification for a US living trust. Each arrangement must be assessed according to its legal terms, although many standard revocable living trusts are likely to be treated as bare trusts during the grantor’s lifetime.
• The greatest tax complexity often arises on death when the trust becomes irrevocable and may be treated as a substantive trust in the UK.
• Americans living in the UK should seek coordinated UK and US legal and tax advice to avoid unexpected tax and reporting issues.

What is a US revocable living trust?

A revocable living trust is a legal arrangement widely used in the United States where an individual transfers assets into a trust during their lifetime whilst retaining full control over those assets. The person creating the trust, known as the grantor or settlor, typically acts as the trustee and maintains the power to amend, revoke or dissolve the trust at any time. Upon death, the assets pass directly to named beneficiaries without going through probate.

In the US, these trusts are treated as transparent for tax purposes. The Internal Revenue Service (IRS) disregards the trust entirely, treating all income and gains as belonging directly to the grantor. This makes them administratively simple whilst providing the probate-avoidance benefit that makes them so popular across America.

Why do Americans use living trusts?

The primary reason Americans establish revocable living trusts is to avoid probate, the court-supervised process of administering an estate after death. Probate in the United States can be time-consuming, expensive and entirely public. Court fees, legal costs and executor commissions can consume a significant portion of an estate, whilst the public nature of proceedings means anyone can access details of what you owned and who inherited it.

A living trust allows assets to pass directly to beneficiaries outside this system, providing privacy, speed and cost savings. For families with property in multiple states, a living trust also avoids the need for separate probate proceedings in each jurisdiction. Many Americans view these trusts as a straightforward way to ensure their affairs are handled smoothly after death whilst maintaining complete control during their lifetime.

How does UK law treat US revocable living trusts?

Each US revocable living trust must be considered separately, with its UK classification determined by reference to the trust deed and surrounding circumstances rather than its US label. The legal terms should therefore be reviewed by a suitably qualified solicitor before concluding how the trust will be treated in the UK. Restrictions on revocation, limitations on the settlor’s control, differences in beneficial entitlement or other provisions could alter the analysis.

In most cases, however, a standard US revocable living trust is likely to be treated as a bare trust for UK tax purposes during the settlor’s lifetime, provided the settlor retains full control and beneficial ownership of the trust assets. Where this treatment applies, the trust is broadly transparent in both jurisdictions: its income and gains are generally taxed directly on the settlor rather than under the UK tax rules applicable to substantive trusts. Accordingly, a US citizen becoming UK resident should not automatically create a fundamental mismatch between the US and UK treatment.

The more significant cross-border complexities generally arise on the settlor’s death, when the trust commonly becomes irrevocable. At that point, it may become a substantive trust for UK tax purposes, potentially creating differences between the US and UK treatment and tax consequences for both the trust and its beneficiaries.

What specific tax exposure could US citizens face?

Where a US revocable living trust is treated as a bare trust for UK purposes, the trust should not generally create a separate layer of UK taxation. Instead, the settlor is taxed personally on the trust’s income and gains in broadly the same way as if the assets were held directly. The relevant exposure therefore arises principally from becoming UK tax resident, rather than from the existence of the living trust itself.

A different treatment may apply where the trust’s terms prevent it from qualifying as a bare trust or following the settlor’s death, when it commonly becomes irrevocable. The arrangement may then be treated as a substantive trust, potentially giving rise to UK income tax, capital gains tax and inheritance tax consequences for the trustees, settlor or beneficiaries. Differences between the UK and US treatment may also create timing mismatches, additional reporting obligations and difficulties obtaining double-tax relief.

Coordinated UK and US advice should therefore be obtained before the settlor becomes UK resident and again in advance of their eventual death.

Can a US living trust be unwound?

Given the potential cross-border complications, some Americans resident in the UK may consider dissolving their US living trust. As these trusts are generally revocable during the grantor’s lifetime, the grantor will ordinarily have the power to terminate the arrangement and transfer the assets back into their personal name.

However, unwinding a living trust is not always straightforward. Assets must be formally transferred out of the trust, which may involve re-registering property titles, changing account registrations and potentially incurring US state-level transfer taxes or recording fees.

What do UK residents use instead of living trusts?

There is no single UK equivalent to a US revocable living trust. UK residents commonly use a combination of a well-drafted Will and a lasting power of attorney to provide for estate administration on death and continuity in the event of incapacity. Unlike a living trust, however, a Will generally requires probate, the duration and cost of which depend on the estate’s complexity, particularly where assets or beneficiaries are located internationally.

Lifetime gifts may also be used for inheritance tax planning, but UK trusts should not be viewed as a straightforward alternative. Transfers into trust can trigger immediate inheritance tax, ten-year anniversary and exit charges, while assets may remain within the settlor’s estate if they retain a benefit.

Additional caution is required for US citizens and beneficiaries. A UK trust will commonly be a foreign trust for US purposes, potentially creating Forms 3520 and 3520-A reporting and complex foreign grantor or non-grantor trust treatment. Distributions from a foreign non-grantor trust may also engage the distributable net income, accumulated income and punitive throwback rules. Any alternative arrangement should therefore be designed with coordinated UK and US legal and tax advice.

Should US citizens in the UK take advice?

The intersection of US and UK tax law creates complexity that often requires specialist guidance. Americans living in Britain remain subject to US tax filing requirements regardless of where they live, and many remain liable for US estate tax even after becoming UK residents. Managing a living trust UK inheritance tax position whilst maintaining US compliance requires expertise in both jurisdictions.

At W1M, our cross-border estate planning specialists can assess whether a US revocable living trust continues to serve any useful purpose after UK residence begins, or whether the structure has become a liability. They can model the UK tax consequences, consider US reporting obligations, and suggest alternative arrangements that work efficiently in both countries. You can contact one of our experienced advisers who would be happy to hear from you.

Glossary

Probate: The legal process of administering a deceased person's estate.

Grantor: The person who creates a trust and transfers assets into it, also known as a settlor.

Relevant property regime: The UK inheritance tax rules that apply to most trusts, involving ten-yearly charges and exit charges on trust assets.

Nil-Rate Band: The threshold below which no inheritance tax is charged on an estate, currently £325,000 per individual in the UK.

Potentially exempt transfer: A lifetime gift that becomes entirely free of inheritance tax if the donor survives for seven years after making it.