For some clients and their advisors, a move to the UK may initially appear to be a straightforward immigration exercise. That is to identify the appropriate visa route, prepare the necessary documents and evidence, submit the application and relocate once permission is granted. In practice, it is rarely that simple. Instead, the combination of immigration status, UK tax residence, travel patterns, family arrangements and longer-term objectives will eventually overlap in ways that be problematic if not identified at the outset.
Identifying tax status
Since 6 April 2025, the interaction between tax and immigration has become more significant. The UK has moved away from a domicile-based framework and towards a system driven by tax residence. As a result, decisions that may appear practical rather than legal, such as the date of first arrival, whether the family moves together, or how much time is spent in the UK during the first tax year can affect both the immigration strategy and the wider tax analysis.
Timing is a clear example. When an individual becomes UK tax resident is determined under the “Statutory Residence Test”, and the analysis can turn on points that are closely connected to the immigration plan. This includes the point at which UK accommodation becomes “available”, when work begins in the UK and how many days are spent here.
Under the new regime, an individual may be able to claim relief from income tax and capital gains tax under the 4-year regime applicable to “foreign income and gains” (FIG), provided the statutory conditions are met (including at least ten consecutive tax years of prior non-UK tax residence). As such, the first four years of tax residence are important. A family that arrives earlier than intended, takes UK accommodation too soon, or structures its travel without reference to the tax residence rules, may reduce planning options that would otherwise have been available to them.
A typical example is a client who arrives in the UK in the early months of a new calendar year. If the period between arrival and the start of the new tax year on 6 April results in residence for the tax year of arrival, then one of the four available tax years is utilised despite the short of time actually spent in the UK. Where possible, it can be advantageous to defer tax residence until the start of the next tax year, thereby extending the end of the FIG regime for the family.
Clients with trusts, family businesses or other substantial and complex assets may need to complete planning before becoming UK tax resident. That timing may, in turn, affect when the visa application should be filed, when permission should be used to enter the UK, and whether dependants should travel at the same time or in stages. The immigration timetable should therefore be built around the wider relocation plan, rather than treated as a separate administrative process.
The tax analysis does not end on arrival. From 6 April 2025, exposure to UK inheritance tax on foreign assets is linked to whether an individual is a “long-term resident”, rather than to domicile. In broad terms, the status of “long-term residence” is acquired following UK tax residence for 10 out of 20 tax years, with a continuing period of exposure after departure in some cases. For clients who intend to come to the UK for a defined period and later leave, the long term IHT exposure may be as important as the immediate income tax/capital gains tax position on arrival.
Future proofing
Planning is especially important for internationally mobile families who do not regard the UK as their only base. The initial immigration route may address entry to the UK, but it may not fully support the family’s longer-term plans. A route that works for immediate arrival may be less suitable if the family later seeks settlement, expects to spend substantial periods outside the UK, or needs flexibility to coordinate the move with schooling, property acquisition or business activity. Immigration planning is therefore not simply about choosing a route that is technically available. It is about choosing a route that remains workable as the family’s circumstances develop over time.
It is also important not to assume that the family will have a single immigration or tax profile. A principal applicant, spouse or partner, and children may arrive at different times, spend different periods in the UK, and have different long-term objectives. A spouse or partner may have their own business, employment or family commitments outside the UK, while children’s residence patterns may be shaped by education and term-time arrangements. These differences can affect UK tax residence, the availability and duration of any favourable tax treatment, visa extensions, settlement eligibility and, in due course, any application for British citizenship. For that reason, the planning should consider each family member individually.
Long-term travel plans should also be considered. Settlement provides a clear example of the impact this can have. It is not simply a matter of remaining in a qualifying category for the required period. Under many routes, the applicant must also satisfy the continuous residence requirement, and absences from the UK will be critical. The permitted absence thresholds are applied by reference to the relevant qualifying period and route. For an internationally mobile family, a travel pattern that is commercially or personally sensible may still complicate a later settlement application if absences are not monitored carefully.
Coordination
A successful visa application is important, but it does not by itself mean that the family has chosen the right route, moved at the right time, preserved access to favourable tax treatment, or protected a future settlement or citizenship application. These issues are not technical extras. They go to the substance of the move. Immigration planning is most effective when it is coordinated from the outset with tax and wider family planning, so that the sequencing of the move is considered as carefully as the application itself. The earlier these issues are addressed, the easier it is to structure a move that is workable on arrival and aligned with the family’s longer-term objectives.
