Banking Strategy for Non-Domiciliary Individuals Living in the UK

Non-domiciliary individuals living in the UK represent some of the most sophisticated banking clients in the London market. They bring international wealth structures — offshore trusts, multiple holding companies, investment portfolios in multiple jurisdictions, and complex personal balance sheets — that require banking partners who genuinely understand the interaction between banking, tax planning, and international structure.

The 2025 FIG regime has simplified some aspects of non-dom planning while raising the stakes for those who do not structure their banking correctly. This guide addresses the banking strategy that sits alongside UK non-dom status.

The underlying tax structure the banking must support

The FIG regime gives newly UK-resident non-domiciliary individuals a four-year window during which offshore income and gains are completely exempt from UK tax. After this window, worldwide taxation applies. At any point, pre-arrival capital (clean capital) can be remitted to the UK without a tax charge.

For the banking to work in alignment with this structure:

• UK-source income must flow through a UK account (it is taxable in the UK regardless)
• Pre-arrival capital must be clearly identified and held separately (in a designated clean capital account) so it can be remitted whenever needed
• Post-arrival foreign income and gains should be received into an offshore account and kept offshore during the FIG window
• Funds must not be mixed between categories once the non-dom is UK-resident

These requirements determine the structure of the banking relationship.

The private banking dimension

At the HNW level, UK non-dom banking typically runs through a private banking relationship rather than retail banking. The private bank serves three functions simultaneously:

UK banking: current accounts, UK mortgage, deposit accounts, credit facilities against UK assets.

Wealth management: investment portfolios, discretionary management, structured products. A well-established private banking relationship can hold both the UK and offshore investment portfolios, providing consolidated reporting.

Relationship coordination: the private bank relationship manager acts as the coordinator between the client, the tax adviser, the trust company, and other advisers. For complex non-dom structures, this coordination is genuinely valuable.

The private banks best known for non-dom client expertise in the UK include:

Coutts: the oldest name in UK private banking, with a long history of serving internationally mobile HNW clients. Part of the NatWest Group but operated independently. Known for relationship continuity and experienced relationship managers.

Barclays Private Bank: strong international network and investment management capability. Comfortable with multi-jurisdiction structures. International arm in Jersey and overseas.

HSBC Private Banking: global network makes it particularly suited to clients with assets and activity across multiple regions. HSBC Premier Global account allows seamless banking across markets.

C. Hoare & Co.: independent and privately owned, with discretion and longevity as its distinguishing features. Relationship managers who remain with the bank for decades. Suitable for clients where confidentiality and the quality of the banking relationship are paramount.

EFG International: Swiss-owned private bank with a significant London presence. Particularly experienced with Middle Eastern, Asian, and Mediterranean HNW clients — demographics that overlap significantly with the UK non-dom community.

Julius Baer: Swiss private bank with a UK presence, offering offshore private banking alongside UK relationship management.

The Isle of Man and Channel Islands banking infrastructure

For the offshore component of the non-dom banking structure, the Isle of Man and Channel Islands are the most commonly used jurisdictions for UK-connected clients:

Isle of Man: British Crown Dependency; IOMFSA-regulated; English language; sterling infrastructure; no CRS disadvantage relative to other offshore centres (IoM participates fully in CRS). Deposit protection up to £50,000 under the IoM Depositors' Compensation Scheme. Banks: Lloyds Bank International, Barclays Wealth International, HSBC Expat, and several private banks and trust companies with banking capabilities.

Jersey: the largest Channel Island financial centre; JFSC-regulated; deposit protection under the Jersey Bank Depositors Compensation Scheme; Jersey is technically outside the EU but retains access to UK payment systems. Banks: Coutts International (Jersey), RBS International, Lloyds Bank International, HSBC Expat, Standard Bank International.

Guernsey: similar to Jersey but with a different regulatory emphasis (particularly strong for investment funds and insurance). Guernsey Financial Services Commission-regulated. Banks: Barclays Bank International, HSBC Private Banking.

For non-doms whose private banking relationship is with Coutts, Barclays, or HSBC, the offshore component typically sits with the international arm of the same group — Coutts International (Jersey), Barclays International (Jersey), or HSBC Expat (Jersey) — giving consolidated reporting and a single relationship manager who oversees both UK and offshore.

CRS, FATCA, and what HMRC knows

A critical point for non-dom clients to understand: HMRC receives automatic annual reports from all major offshore financial centres about accounts held by UK residents.

The Common Reporting Standard (CRS) is the OECD's multilateral information exchange framework. The Isle of Man, Jersey, Guernsey, Cayman Islands, Switzerland, Singapore, Luxembourg, and virtually every other offshore financial centre of significance are participating jurisdictions. Each year, financial institutions in these jurisdictions report account balances and income to their local tax authority, which then automatically exchanges the information with HMRC.

HMRC cross-references this information against self-assessment returns. A non-dom who is correctly using the FIG regime will declare their offshore income on their self-assessment return (claiming the FIG exemption) and the offshore balance reported by CRS will be consistent with the returns filed. There is no evasion or concealment — the regime is used transparently.

Where a problem arises is if a non-dom has offshore income that is not declared on self-assessment, or declares it incorrectly. HMRC's ability to detect this has increased substantially with CRS reporting.

FATCA (the US Foreign Account Tax Compliance Act) applies to US citizens and green card holders regardless of where they live. UK-resident US non-doms (a complex but not uncommon situation) face both CRS reporting to HMRC and FATCA reporting to the IRS. They require specialist US/UK dual-tax advice.

The anti-avoidance perimeter

A non-dom banking structure is legitimate when it correctly reflects the nature and source of funds. It becomes problematic when it is used to misrepresent the character of funds — for example, by running taxable UK income through an offshore account with the intention of disguising it.

The remittance basis was abolished on 6 April 2025 and replaced by the residence-based FIG regime, but its anti-avoidance machinery remains directly relevant to anyone who used the remittance basis before that date and still holds pre-2025 mixed funds offshore. For those legacy balances, HMRC's rules continue to govern:

• Matching and ordering: identifying which funds a particular transfer to the UK comes from using statutory ordering rules
• Relevant person rules: preventing transfers through connected persons (spouses, minor children, companies controlled by the individual) being used to circumvent the rules
• Benefit in kind: arrangements where offshore funds are used to benefit the individual in the UK without a formal cash remittance (loans from an offshore company they own; paying a UK service provider from an offshore account)

A Temporary Repatriation Facility is available for a limited period to bring previously untaxed pre-2025 foreign income and gains to the UK at a reduced rate. Any complex arrangement should be pre-cleared with the individual's UK tax adviser.

Practical banking checklist for non-doms

Before or shortly after arriving in the UK as a non-dom:

1. Open a UK private bank account with a relationship manager experienced in non-dom planning
2. Open an offshore clean capital account (IoM or CI) and fund it with demonstrably pre-arrival capital only
3. Open a separate offshore income account for receipt of post-arrival foreign income during the FIG window
4. Obtain a tax adviser opinion on the clean capital classification of existing assets
5. Ensure all offshore accounts are disclosed on the self-assessment return (using the FIG exemption where applicable)
6. Maintain a comprehensive audit trail: account opening documents, transfer records, and characterisation of all funds

How Global Investments can help

Global Investments works with internationally mobile HNW individuals navigating the full spectrum of UK non-dom banking, from the first arrival and clean capital structuring to the management of complex multi-jurisdiction portfolios for established non-dom residents.

We can introduce you to the private banking relationships most appropriate for your situation, coordinate with specialist non-dom tax advisers, and help you establish the offshore banking architecture in the IoM or Channel Islands. If you are arriving in the UK for the first time or reviewing an existing non-dom structure, speak to our team at the earliest stage — the banking decisions made at the outset establish the framework for years ahead.

This guide reflects our understanding of UK non-dom banking and the FIG regime as of June 2026. Tax rules affecting non-doms have changed significantly in recent years and continue to evolve. Always seek specific advice from a qualified UK non-dom tax adviser before making financial decisions.