US vs UK Trusts: What Families Should Know
For internationally connected families, trusts are a common way to protect and transfer wealth. But while the concept of a trust exists in both the US and the UK, the rules, structures, and tax treatments differ significantly. Understanding these differences is essential for families with assets, heirs, or citizenships in both countries.
The Purpose of a Trust
At their core, trusts are designed to separate ownership and control. A settlor (or grantor) transfers assets to a trustee, who manages them for the benefit of named beneficiaries. This structure can provide privacy, continuity, and protection across generations.
In both jurisdictions, trusts can be used for estate planning, asset protection, and philanthropic giving. The challenge arises when a family’s wealth and beneficiaries cross borders, as what is efficient in one system may create complications in another.
How Trusts Differ Between the US and the UK
Legal Foundations
In the US, trust law is state-based. Each state has its own trust statutes, but most follow broadly similar rules. US trusts are flexible, allowing families to define specific terms for investment control, income distribution, and succession.
In the UK, trust law has deep common-law roots and is governed by national legislation such as the Trustee Act. UK trusts tend to be more standardized and can have distinct tax consequences based on whether they are discretionary, interest-in-possession, or bare trusts.
Tax Treatment
While both systems recognize the separation of ownership between settlor, trustee, and beneficiary, they diverge significantly on taxation.
In the US, trusts can be either grantor or non-grantor. Grantor trusts are generally transparent for tax purposes, meaning income is reported on the grantor’s individual return. Non-grantor trusts are separate tax entities that must file their own returns.
In the UK, trusts are subject to various tax regimes depending on their type. Income tax, capital gains tax, and inheritance tax can apply at different stages, often at rates higher than those for individuals. The UK also applies periodic ten-year charges for certain trusts.
Because these frameworks are not aligned, a trust established in one country may be treated very differently in the other. For example, a US trust holding UK property may trigger UK inheritance tax exposure, while a UK trust with US beneficiaries may require US reporting.
Reporting and Compliance
Cross-border families often overlook reporting obligations.
- In the US, foreign trusts may need to file Form 3520 or 3520-A, and beneficiaries receiving distributions must report them.
- In the UK, trustees of offshore trusts must comply with HMRC’s Trust Registration Service (TRS) and may have to report income and gains.
Failure to meet these requirements can result in penalties, even when no tax is owed.
Planning for Dual-Country Families
Families with UK and US ties should review all existing trusts to confirm that they remain efficient and compliant. What worked before a change of residence or citizenship may no longer be optimal. Coordination among legal, tax, and financial professionals in both countries is essential to avoid double taxation or conflicting obligations.
A wealth manager experienced in cross-border structures can help ensure:
- Trust assets align with overall estate and investment strategies
- Liquidity is available for tax or settlement needs
- Ownership and reporting responsibilities are clearly defined
Bringing Structure to Complex Wealth
Trusts remain powerful tools for preserving wealth and providing for future generations. However, the differences between US and UK frameworks mean that cross-border families must approach them with care. The goal is not simply to establish a trust but to ensure that it functions effectively within both legal systems.
If your family holds or benefits from a trust with ties to the UK or the US, consider reviewing it as part of a broader cross-border wealth plan. A coordinated approach can help protect assets, reduce administrative risk, and create greater clarity for the next generation.
Some of the content of this communication was provided by third parties of BlackPoint Capital Partners. We have not verified the information contained herein, but we believe the content is reliable. None of this content should be construed as legal, accounting or tax advice. Tax laws are complex and often have highly-individualized requirements, you should seek the advice of a competent tax professional if you have specific tax questions.
