The New UK Inheritance Tax Rules For Expats From April 2025

Category: Expat Estate Planning

Target keyword: UK inheritance tax expats 2025

Author: Heritance Planning

Read time: 7 minutes

April 2025 marked one of the most significant changes to UK Inheritance Tax in decades — and it is a change that every British expat needs to understand urgently.

The reform fundamentally altered the basis on which UK Inheritance Tax applies to individuals who have left the UK. For many British expats in the UAE, India, Malaysia, the USA and Africa, the change means that assets they assumed were outside the scope of UK IHT may now be firmly within it.

If you left the UK in the last 10 years and have not reviewed your IHT position since April 2025 — this article is essential reading.

The Old System — Domicile Based IHT

Under the previous rules UK Inheritance Tax was primarily based on domicile — a complex legal concept broadly meaning the country you consider your permanent home.

UK domicile individuals — broadly those born in the UK who had not clearly and permanently settled elsewhere — were subject to UK IHT on their worldwide assets. Non-UK domicile individuals were only subject to UK IHT on their UK assets.

For many British expats the goal was to acquire a non-UK domicile — demonstrating a clear intention to permanently settle abroad. If successful this limited their UK IHT exposure to UK sited assets only.

The April 2025 reforms changed this fundamentally.

The New System — Residence Based IHT

From April 2025 the UK moved to a residence based system for determining IHT liability. This means that domicile — while still relevant — is no longer the only factor. Your residency history now plays a central role.

The Long Term Resident Test

Under the new rules an individual becomes a Long Term UK Resident if they have been UK resident for 10 or more of the previous 20 tax years.

Once you meet this test you are subject to UK IHT on your worldwide assets — regardless of your domicile. This means your UAE property, your overseas savings, your foreign investments and your assets in any other country could all be within the scope of UK IHT.

The Tail Period

This is the aspect of the new rules that catches most people by surprise.

Even after you cease to be UK resident — by leaving the UK and not returning — you remain subject to IHT on your worldwide assets for a tail period of between 3 and 10 years depending on how long you were resident in the UK.

Years of UK residence / Tail period after leaving:

- 10 to 13 years — 3 years

- 14 years — 4 years

- 15 years — 5 years

- 16 years — 6 years

- 17 years — 7 years

- 18 years — 8 years

- 19 years — 9 years

- 20 or more years — 10 years

This means a British expat who spent 20 years living in the UK before moving to Dubai remains subject to UK IHT on their worldwide assets for 10 years after leaving — even if they have acquired UAE residency and have no intention of returning to the UK.

Who Is Affected

The new rules affect a significant number of British expats — particularly those who:

- Left the UK within the last 10 years

- Spent 10 or more years in the UK before emigrating

- Have significant assets outside the UK — property, savings, investments, business interests

- Previously assumed their non-UK domicile protected them from worldwide IHT exposure

- Are in the tail period following recent departure from the UK

If you fall into any of these categories you need to review your IHT position as a matter of urgency.

What Has Not Changed

It is worth clarifying what the April 2025 reforms did not change:

- The nil rate band remains £325,000

- The residence nil rate band remains £175,000 for qualifying properties passed to direct descendants

- The IHT rate remains 40% on assets above the threshold

- The spousal exemption remains — assets passing between spouses remain exempt

- Business Property Relief and Agricultural Property Relief continue to apply

- The seven year rule on potentially exempt transfers continues

The fundamental mechanics of IHT remain the same. What has changed is the reach of the tax — who it applies to and in respect of which assets.

Double Taxation — An Important Consideration

Many British expats in the UAE, India, Malaysia and elsewhere are aware that the UK has double taxation treaties with many countries. These treaties are designed to prevent the same assets being taxed twice — once in the UK and once in the country of residence.

However the UK's network of estate and inheritance tax treaties is relatively limited. The UK has full estate tax treaties with only a small number of countries. For many popular expat destinations — including the UAE — there is no comprehensive estate tax treaty with the UK.

This means British expats in the UAE could potentially face UK IHT on their worldwide assets with no treaty relief available. Understanding your specific treaty position is an important part of cross border IHT planning.

UK Inheritance Tax Planning Strategies Under The New Rules changes from April 2025

The April 2025 reforms do not eliminate the ability to plan effectively — but they do change the landscape and make early action more important than ever.

Review Your Residency Position

Understand precisely where you stand under the new Long Term Resident test. How many of the previous 20 years were you UK resident? Are you currently in a tail period? When does your tail period end?

This analysis forms the foundation of any IHT planning — you cannot plan effectively without knowing your current exposure.

Accelerate Lifetime Gifting

If you are in a tail period and have worldwide assets that are potentially within the scope of UK IHT, accelerating your gifting strategy could significantly reduce your exposure. Gifts made now start the seven year clock running — the sooner you start the sooner the gifts fall outside your estate.

Consider Trust Structures

Certain trust structures can be effective in removing assets from your estate — but the rules around offshore trusts and the interaction with the new residence based IHT regime are complex. Professional advice is essential before establishing any trust structure.

Review Your Will In Light Of The New Rules

If your UK Will was drafted before April 2025 it may not reflect your current IHT position or take advantage of the planning opportunities available under the new rules. A Will review is strongly recommended for all British expats.

Review Your Overall Asset Structure

In some cases restructuring how assets are held — for example through corporate structures or by taking advantage of treaty provisions — can reduce IHT exposure. This type of planning is complex and requires qualified tax advisory input.

The Importance Of Acting Now

The tail period provisions mean that for many British expats the window for effective planning is time limited. The further you get through your tail period without planning the fewer options are available.

For those who have recently left the UK — or who are considering leaving — the time to plan is now, before the tail period clock runs down.

For those already well into their tail period the urgency is even greater — but effective planning is still possible and can still make a significant difference to the IHT liability your family faces.

How Heritance Planning Can Help

The April 2025 IHT reforms are technically complex and the implications for individual British expats vary significantly depending on their specific circumstances — residency history, domicile position, asset base and family situation.

At Heritance Planning our founder is a qualified tax adviser with over 10 years of personal and corporate tax experience. We have a particular specialism in advising British expats on their UK tax and estate planning position — including the implications of the April 2025 reforms.

Every expat IHT review we conduct is bespoke — built around your specific circumstances, designed to give you a clear picture of your current exposure and a practical plan to address it.

Our UK Expat packages start from £495 — all fees confirmed following your free 30 minute consultation.

Concerned about the new IHT rules? Book your free no obligation consultation today at heritanceplanning.com or email us directly at hello@heritanceplanning.com

All enquiries responded to within 24 hours. Remote consultations available across all time zones.

Related articles:

- UK Expats In Dubai — Is Your UK Estate Protected?

- What Happens To Your UK Assets If You Die Abroad?

- How To Reduce Your Inheritance Tax Bill Legally

© 2026 Heritance Planning. All rights reserved. This article is for informational purposes only and does not constitute legal or tax advice. Please seek professional advice tailored to your individual circumstances.