Cayman charges nothing, so the UK exit is the entire job
There is no Cayman income tax, capital gains tax or inheritance tax, and no local return to file, so every pound of saving comes from ceasing to be UK resident, cleanly and provably, under the Statutory Residence Test. For someone on a George Town contract the target is usually the full-time work abroad test: at least 35 hours a week on average, fewer than 91 UK days and no more than 30 UK workdays. This is a corridor of high-frequency returners, and the sufficient ties test is where it goes wrong: keep a spouse, an available home, UK workdays and a 90-day history and you can be UK resident again from as few as 16 days. If you leave mid-year, split-year treatment is claimed on the SA109 pages of your final return.
What the UK keeps taxing, including your pension
Rental profits on a kept UK property stay UK-taxable 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. Pensions surprise people most: the 2010 UK-Cayman arrangement runs to just 15 articles, with nothing on dividends, interest, employment income or capital gains, and its pensions article only hands sole taxing rights to Cayman once you have been continuously resident there for six years before the pension payments begin. Move out and start drawing straight away and your SIPP stays in UK PAYE with no Cayman tax to credit. Sequencing a pension start date against that six-year rule is one of the few genuinely valuable planning points in this corridor.
The traps built for the version of you that comes back
Two long tails deserve respect. Return to the UK within five years, having been resident in four of the seven years before leaving, and the temporary non-residence rules can tax gains you realised while away in your year of return. And most Cayman-domiciled funds are non-reporting funds for UK purposes, so a returner still holding them pays income tax at up to 45% on their gains rather than capital gains tax; review the portfolio in the tax year before the return flight, not after. Since 6 April 2025 the residence-based inheritance tax tail can also follow a long-term UK resident for up to ten years. The full corridor, including work permits and the arrangement's text, is in our guide to UK tax when moving to the Cayman Islands. We work the UK side on fixed fees agreed upfront, and a free clarity call will tell you where you stand before any work starts.