You moved abroad. Do you still owe UK tax?

A lot of agency founders eventually think about leaving, whether it is Dubai, Lisbon, or somewhere with a kinder tax regime and better weather. The instinct is that once you land somewhere else, the UK is no longer your problem. It is rarely that clean, and the gap between what people assume and how the rules actually work is where the expensive surprises live.

Tax follows residence, not your postcode

The single most important idea is that the UK taxes you based on residence, not on where you happen to be on a given day. Residence is decided by the Statutory Residence Test, which weighs how many days you spend in the UK against the ties you keep here: a home, family, work, and so on. You can move your body abroad and still be UK tax resident on paper if those ties pull hard enough. Booking a one-way flight does not, by itself, end your relationship with HMRC.

The year you leave is its own problem

Even when you do break UK residence cleanly, the year of departure needs its own thought. Split-year treatment can tax part of that year as resident and part as not, but it comes with conditions, and getting the timing wrong can mean an entire year taxed the way you were trying to avoid. This is exactly the kind of detail that is cheap to plan around in advance and painful to fix afterwards.

You can be resident in two places at once

Then there is the country you have moved to. It will have its own rules for when you become tax resident there, and it is entirely possible to be in scope in two places at the same time. Double taxation treaties exist precisely to settle who gets to tax what, so the same income is not taxed twice, but they have to be read and applied properly rather than assumed. Relying on a broad sense that a treaty will sort it out is how people end up with an unexpected bill.

Your company does not move just because you do

For an agency owner it is more tangled still, because the business has its own tax residence. Where a company is genuinely managed and controlled can matter as much as where you personally live, so moving yourself does not automatically move the company. That mismatch, founder abroad, company still effectively run from and taxable in the UK, is one of the most common and most expensive misunderstandings. It is also why optimising your UK position first usually matters more than people expect before any move.

Plan the move before you make it

The honest summary: relocating can genuinely lower your tax, but it has to be planned. Buying a plane ticket does not do it on its own. Work out the residence position in both countries, and the position of your company, before you go rather than after. The most costly version of this is discovering, a year later, that you never really left the UK net at all. This is general information, not advice, and residence rules are detailed and change, so take proper advice on your own situation. If a move is on your mind, we look at both sides on the accountants for marketing agencies page, or book a call.