The Treasury's final non-dom framework, confirmed in the Spring Budget, closes a chapter that has defined UK wealth structuring for two decades. For the estimated 68,000 individuals affected, the message is unambiguous: the old architecture is being decommissioned. The new one demands action before November 2026.
The Six-Month Window
Between April and November 2026, a transitional provision allows existing non-dom structures to be unwound or restructured without triggering the full tax liability that will apply from December onwards. This is not a grace period — it is a compliance deadline with material financial consequences for those who miss it.
Five Tested Frameworks
Our intelligence from London's leading private client practices suggests five structuring approaches that have survived regulatory stress-testing. Each requires bespoke implementation, but the common thread is clear: the era of passive offshore accumulation is over. What replaces it is a more complex but still viable architecture that preserves sovereign control over generational wealth — provided the repositioning happens within the window.
"The families who act in the next six months will preserve optionality. Those who wait will find the door closed and the terms non-negotiable."
The critical variable is not the structure itself but the timing. Every week of delay compresses the available option set. By September, the most favourable restructuring pathways will already be congested with the late-acting majority.