🇬🇧 Tax residency in United Kingdom

You'll trigger UK tax residency if you spend 183 days in the country within a tax year. That’s the headline number. But it’s rarely that simple. The UK uses a Statutory Residence Test (SRT) that’s more complex than just counting days.

The SRT has a tiered approach. Spend 91 days or fewer and you're usually not resident. Hit 183 days and you are. But what about the middle ground? That's where the "ties" come in. You can be resident with fewer than 183 days if you have enough connections to the UK. Think about your "centre of vital interests." Does your family live here? Do you own property? Have you got a job offer or a registered business? These things matter. Even if you’re only there for, say, 100 days, a significant number of ties can pull you across the residency line. Owning a home here is a big one. Having your spouse or minor children living in the UK also counts heavily. A UK-registered company you work for, or even just one you're a director of, adds another tie.

So, what happens if you do become a UK tax resident? You’re looking at worldwide taxation. This means any income or gains you make, wherever in the world they happen, are potentially taxable in the UK. For high earners, this bites hard. The UK has a progressive tax system. For the 2024-25 tax year, income above £125,140 is taxed at 45%. That's a significant chunk. On top of income tax, you’ll also face Capital Gains Tax (CGT). The rates for CGT on assets like shares are 20% for most income taxpayers, and 10% on certain other assets. Your annual CGT allowance for 2024-25 is £3,000†. This worldwide tax net is comprehensive.

Now, there's a lifeline for some: the Non-domiciled status, or more accurately, the Foreign Income & Gains (FIG) regime which replaces the old system from April 2025. If you're new to the UK and haven't been resident for the last 10 tax years, you can elect to be taxed on the remittance basis. Under the new FIG regime, this offers a four-year exemption on foreign income and capital gains for new arrivals. You don't pay UK tax on this foreign income or gains during those four years, provided you don't bring it into the UK (remit it). After the four years, you'll generally be taxed on your worldwide income and gains, like everyone else. To qualify, you must have been non-UK resident for the 10 preceding tax years. This is a huge benefit, but it’s temporary. It shelters foreign income and gains, but it won't shield UK-sourced income.

Interacting with tax treaties is crucial if you're from certain countries. For US citizens, the US-UK double taxation treaty aims to prevent you from paying tax twice. Typically, you’ll get a credit for taxes paid in one country against your liability in the other. The same applies if you're a resident of Germany or have significant ties there; the Germany-UK treaty works similarly, often allowing you to offset taxes paid. The key is understanding which country has the primary taxing right based on where the income arises and your residency status in both. The SRT and your home country’s rules will determine this.

When does it make sense to hire a local accountant? If you're earning over, say, £60,000 annually from various sources, or if you're using the Non-dom regime and need to manage remittances carefully, paying for expert advice often pays for itself. They can help you structure your affairs to minimise tax legally and avoid costly mistakes that could land you with penalties.

Triggering UK tax residency is a multi-faceted calculation, not just a day count.

This information is for guidance only and does not constitute legal or tax advice.