Until you break UK residence, nothing changes
The UK taxes residents on worldwide income, so a move to the Netherlands only helps once you are non-resident under the Statutory Residence Test. For someone taking a Dutch job the usual route is the third automatic overseas test: full-time work abroad averaging at least 35 hours a week, fewer than 91 UK days and no more than 30 UK workdays. Amsterdam is barely an hour from London, which is exactly how commuter-style moves drift over a threshold. If you leave part-way through a tax year, split-year treatment can tax you as non-resident from your departure date; it is claimed on the SA109 pages of your return, not by the P85.
What stays UK-taxable after you leave
Non-residents still pay UK tax on UK-source income. Rental profits on a kept property fall under the Non-Resident Landlord Scheme, and gains on UK property must be reported and any tax paid within 60 days of completion, even where nothing is due. Two longer tails matter as well: come back within five years and the temporary non-residence rules can tax gains and certain income you realised abroad in your year of return, and since 6 April 2025 the residence-based inheritance tax rules can keep a long-term UK resident's worldwide estate within UK IHT for up to 10 years after departure.
The Dutch side: boxes, the 30% ruling and an odd pension answer
The Netherlands taxes residents on worldwide income through three boxes, with a top box 1 rate of 49.5% and a flat 36% charge on deemed investment returns in box 3, so this is not a low-tax play. What makes it work for employees is the 30% ruling, which lets a qualifying new arrival receive up to 30% of salary tax free for up to five years, falling to 27% for newcomers from 2027. The 2008 treaty, in force since 25 December 2010, is unusual on pensions: its government service article covers salaries only, so UK government service pensions fall under the general pensions article rather than staying automatically with the UK, and the UK can generally only tax a pension paid to a Netherlands resident where specific source-state conditions are met. The full corridor detail is in our Netherlands guide. Horizon handles the UK side of the move on fixed fees agreed upfront, and a free clarity call is the quickest way to find out what your exit involves.