28/05/2026
The UK inheritance tax landscape has shifted dramatically in just two years — and the pace of change is still accelerating.
Since April 2025, the UK has moved from a domicile-based system to a residence-based IHT regime. Long-term UK residents can now be exposed to inheritance tax on worldwide assets, with that exposure continuing for up to 10 years after leaving the UK.
Further changes followed in April 2026:
• APR and BPR reliefs were capped
• Full 100% relief now applies only to the first £2.5m of qualifying assets per person
• Relief above that threshold is reduced by half
• AIM shares also lost part of their relief
And from April 2027, most unused pension funds are expected to fall within the scope of IHT for the first time.
Individually, each reform is significant. Together, they fundamentally reshape areas many clients once viewed as settled: cross-border structuring, business succession, agricultural estates, and pension planning.
What makes this particularly challenging is not only the substance of the reforms, but the speed and uncertainty surrounding them — ongoing consultations, evolving guidance, and continued speculation around future political direction.
For advisers and families alike, medium-term planning now requires far greater flexibility. Structures built under the previous regime may no longer deliver the outcomes originally intended.
Inheritance tax planning has rarely required more active review than it does today.