With the United Kingdom preparing to abolish the non-domiciled (“non-dom”) tax status from April 6, 2025, many Australians are considering the tax impact of returning home. See our article Australians Living In The UK: How The New “Non-Dom Tax” Changes May Affect You.

Whether you make the decision to return home before the tax changes take place, or you remain in the UK until after the new laws impact you, when you return home it is important to manage your UK tax exit obligations.

Simple Checklist For Australians Returning From The UK

1. Confirm UK tax residency status and apply for split-year treatment (if eligible).

2. File a final UK tax return and settle any outstanding liabilities.

3. Plan capital gains tax-efficiently (consider selling non-UK assets after leaving to avoid UK CGT).

4. Transfer UK savings and close unnecessary UK bank accounts.

5. If keeping UK property, register with HMRC’s Non-Resident Landlord Scheme and  ensure that you continue to file UK tax returns as a non-resident.

6. Seek advice on Australian taxes and ensure your Australian tax return is prepared in accordance with Australian tax residence rules, including declaring worldwide income.

7. Review foreign asset disclosures and pension tax treatment with the ATO.

8. Be mindful of the 10-year UK IHT rule for former UK residents9- Use the UK-Australia Double Tax Agreement to mitigate double taxation.

The Key Differences For Australians Returning To Australia Before vs After The UK’s New Non-Dom Rules (April 6, 2025)

The timing of departure from the UK will significantly impact an Australian’s tax obligations in both the UK and Australia. The key differences arise in capital gains tax (CGT), inheritance tax (IHT), and foreign income treatment.

1. UK Capital Gains Tax (CGT) Implications On Worldwide Assets

The Key Difference for CGT purposes is that leaving before April 2025 allows Australians to sell non-UK assets CGT-free under the remittance basis. Individuals leaving after April 2025 may still owe UK CGT on global assets if they were UK residents for more than 4 years.

2. UK Inheritance Tax (IHT) Exposure

The key difference for IHT exposure is that before April 2025 a non-domiciled resident does not have their worldwide assets caught in UK IHT rules when they leave the UK. Leaving after April 2025 can expose them to UK IHT for up to 10 years if they were a UK tax resident for a decade or more.

3. UK Tax On Foreign Income And Remittances

Non-domiciled individuals who leave before April 2025 avoid retrospective taxation on foreign income and remittances. Leaving after April 2025 could mean more UK tax on past foreign income, depending on transition arrangements.

4. Remittance Of Foreign Income Into The UK

Prior to 2025 a non-domiciled resident would avoid UK taxes on foreign income if they did not bring this income into the UK.

Under the new UK tax rules all foreign income is taxable in the UK after the first four years, regardless of whether the income is brought into the UK or not. It is important to ensure that your Australian income isn’t brought into the UK prior to 6 April 2025 if you want to avoid UK taxes on that income.

After 6 April 2025 you may be exempt from paying UK taxes under the four-year exemption rule. If you are not exempt under this rule you may be able to bring previously untaxed foreign income into the UK under a reduced tax rate if a decision to designate this income for remittance into the UK is made before the end of the 2028 financial year. Foreign income earned from 6 April 2025 (other than income earned under the 4 year exemption rule) will be taxable, regardless of whether it is remitted into the UK or not.

5. UK Property And Rental Income

The rules remain similar in that UK rental income will continue to be taxable in the UK as the country of source, as well as being taxable in Australia as the country of residence. However, the CGT rules may be stricter for UK purposes for former UK residents, meaning that the key difference is that an individual returning to Australia may see better CGT outcomes if they sell their UK property before they leave. As this will depend on specific factors, it is important to obtain correct tax advice for your specific situation prior to making your move back to Australia.

 6. Australian Tax Treatment Upon Returning

Regardless of when an individual returns, Australians:

a) Will immediately become Australian tax residents and be taxed on their worldwide income for Australian tax purposes.

b) Must declare UK rental income, pension withdrawals, and foreign bank accounts.

c) May claim foreign tax credits for UK tax paid on income still sourced in the UK.

Leaving before April 2025 gives returning Australians more flexibility to clear UK tax obligations before Australian tax residency resumes.

Overview Of Tax Impact Of Australian Leaving Before Or After April 2025

Factor	Before April 6, 2025 (Old Rules)	After April 6, 2025 (New Rules)
UK CGT On Worldwide Assets	No CGT on non-UK assets	Worldwide assets taxable if UK resident 4+ years
UK Inheritance Tax (IHT)	Only applies to UK assets	Worldwide estate taxed if UK resident 10+ years
UK Tax On Foreign Income	Foreign income not taxed if remitted after leaving	Worldwide income taxable if UK resident 4+ years
Bringing Foreign Income Money Into The UK	UK tax only applies when remitted to the UK	UK tax applies on worldwide income (after the first four years) and possible UK tax on past foreign income if repatriated
Australian Tax Impact On Moving Back To Australia	Becomes tax resident immediately, but avoids UK transition issues	Still becomes tax resident of Australia, but may owe UK taxes on past foreign income

Summary

Australians who leave the UK before April 6, 2025 will avoid new UK tax burdens on foreign assets, income, and IHT. Anyone staying past April 2025 or moving to the UK after this date, may face unexpected UK tax liabilities which may continue even after leaving.

These changes mark a significant departure from the UK’s previous tax regime. Understanding these changes is important when assessing a decision around how long you plan to live in the UK, and how this may impact your current tax obligations, as well as the tax impact on your estate.

Whether you are still making your decision on living in the UK, or need to understand the tax consequences of your decision, it is important to engage an international tax specialist who can provide up to date and accurate information tailored to your specific situation.

The United Kingdom is prepared to abolish the non-domiciled (“non-dom”) tax status from April 6, 2025. This is a significant reform which will mean that all UK residents, regardless of their domicile, will be taxed on their worldwide income.

Current Tax Rules In The UK For Non-Domiciled Individuals

Under the current tax rules Australians who live in the UK are taxed according to their domicile status and the nature of their income. An Australian who is not domiciled in the UK may make a claim to be taxed on foreign income on a remittance basis, meaning you are only taxed on any UK-source income and gains plus any foreign income remitted to the UK.

They are also able to return home to Australia without worrying about any ongoing impact of UK taxes for anything other than assets that remain in the UK.

How The UK Tax Rules Are Changing

There are a number of key aspects of the proposed changes which could have a significant impact on Australians in the UK. These include:

1. Abolition Of The Remittance Basis

Under the new system, individuals will be taxed on their worldwide income, similar to the way that Australian residents are taxed on their worldwide income. This means that while living in the UK you will need to include any income that you earn from Australian investments or income sources in other countries, even if you don’t bring that money into the UK.

2. Introduction Of A Four-Year Foreign Income And Gains Regime

On the positive side, new arrivals to the UK, who have not been UK tax residents in the previous ten consecutive years, will benefit from a new four-year period during which they receive 100% relief on foreign income and gains. This relief applies irrespective of whether the income is remitted to the UK. This effectively allows individuals to live in the UK for 4 years without having to worry about the consequences of bringing in their overseas income, and may make it more appealing for Australians to live in the UK on a short term basis that does not exceed this four year period. 

3. Imposing Inheritance Tax (IHT) Even After Departure From The UK

The domicile-based system for IHT will be replaced with a residence-based system. In addition, expats who return to Australia after the new rules are in place may be exposed to IHT for up to 10 years after leaving the UK. This makes estate planning more complex for any Australians living in or returning from the UK.

4. Capital Gains (CGT) On Worldwide Capital Gains

Australians who previously benefited from the remittance basis will now face UK CGT on all gains from worldwide assets, even if those gains are not brought into the UK.

Transitional Rules

There are a number of transitional rules that will help ease UK residents into the new tax system.

Individuals who have previously been non-domiciled and used the remittance basis of taxation will have the option to value their foreign capital assets as of April 5, 2017. This creates a new capital base value to avoid CGT applications on the increase of value up to that date.

Current non-dom individuals will also have access to a transitional discounted tax rates on their previously unremitted foreign income and gains until the 2028 tax year.

Practical Steps To Take If You Stay In The UK After April 6, 2025

Australians who are currently non-domiciled residents of the UK, who decide to stay in the UK, should take practical steps to minimise their UK tax exposure and optimise their financial position. Key actions include:

1. Revaluing assets held outside the UK prior to April 2017 for CGT purposes.
2. Selling assets before April 2025 if advantageous.
3. Utilising transitional tax reliefs by obtaining the right advice from a tax specialist.
4. Maximising the four-year tax exemption (if eligible).
5. Reviewing investment strategies, retirement planning and estate planning strategies to factor in the new tax consequences of remaining in the UK.
6. When assessing the timing of potentially returning to Australia, consider the impact of Inheritance taxes if you live in the UK for 10 years or more.
7. Keep clear records and obtain up to date tax advice to mitigate tax consequences.

It is important to engage an international tax specialist to complete a personalised assessment for tax planning in your specific situation.

Revalue Australian (And Other Foreign) Assets

You should obtain formal or independent valuations for properties, shares, and other investments as of 6 April 2017.

The UK is offering a one-time rebasing relief, allowing individuals who previously used the remittance basis to revalue their foreign assets to April 6, 2017, for Capital Gains Tax (CGT) purposes. This means only gains accrued after April 6, 2017, will be subject to UK CGT when the asset is sold. This relief is not applicable if you were deemed to be domiciled at some point between 6 April 2017 and the introduction of the new tax laws on 6 April 2025.

Plan Asset Sales Before April 2025

If you are planning to sell Australian assets:

a) Consider if there is an overall benefit in selling these assets before April 6, 2025 to avoid UK CGT.

b) If selling after April 2025, use the rebasing relief to reduce taxable gains.

c) Review whether holding assets via a trust or corporate structure might help in specific cases. If so, it may be possible to sell individually owned assets to a corporate structure that you control prior to April 6 2025.

After April 2025, all worldwide capital gains (including on Australian assets) will be taxed in the UK unless you are living in the UK for less than 4 years.

Use Transitional Tax Discounts

Take advantage of any transitional rules where possible.

a)    If receiving Australian rental income, dividends, or business profits, consider bringing forward earnings to take advantage of this discount.

b) If withdrawing funds from an Australian trust or investment portfolio, consider timing withdrawals within this period.

For tax relief that is based on timing and access to transitional rules it is important to obtain correct and up to date tax information from the relevant tax specialist.

Consider How To Utilise The Four-Year Foreign Income And Gains Exemption For New Arrivals

If you have not been a UK resident in the previous 10 years then you can utilise the new four-year foreign income exemption.

a) New and recent arrivals in the UK should utilise this period of exemption to plan and structure income sources for optimal tax outcomes.

b) Where you have control over timing of income, consider triggering capital gains or significant foreign income events within the four-year exemption period.

Notably, under the new rules the four-year exemption applies regardless of whether the funds are brought into the UK. This means that any Australians who were not UK tax residents in the previous 10 years will not be taxed on foreign income or gains for their first four years in the UK. This gives Australians a good opportunity to live in the UK on a short-term basis without being impacted by the new rules.

Review Australian Superannuation And Pension Taxation

Engage a tax specialist to complete tax planning strategies for your retirement and review any current and upcoming lump sum or pension income.

a) Obtain long term advice on tax planning strategies that take into consideration the way the new rules will impact any UK tax on lump sum withdrawals or pension income from Australian super funds.

b) If applicable, time superannuation withdrawals strategically before tax rates increase.

c) Consider the types of investment income you are currently earning from Australia. Understanding the tax consequences of these changes gives you the opportunity to assess optimising your ongoing investment and income strategies.

With the tax rules changing, it is important to understand how this could impact your long-term and immediate investment and retirement plans so you can make informed decisions about your finances.

Plan For UK Inheritance Tax (IHT) On Worldwide Assets

The UK imposes an inheritance tax (IHT). Under the new rules IHT will apply to worldwide assets.

a) Consider trusts or corporate structures to protect assets from UK IHT.

b) Review wills and estate planning to align with both UK and Australian tax laws.

c) If planning to leave the UK, remember IHT exposure may continue for 10 years after departure.

Under the new rules, individuals who have been a UK tax resident for 10+ years will be subject to IHT on worldwide assets. This includes Australian property, shares, and businesses. It is therefore important to revise your inheritance strategies if you will be a long term UK tax resident. You should also consider the impact of IHT when assessing timing for making a move back to Australia, as you may be able to avoid IHT by making an earlier move.

Maximise Double Tax Relief And Tax Credits

Talk to an international tax specialist to ensure you have appropriate, current and up to date tax planning strategies in place that consider the new rules. With the UK taxing worldwide income it will be more important to utilise double taxation relief provisions to minimise your tax exposure.

a) Keep detailed tax records to claim foreign tax credits efficiently.

b) Engage an international tax advisor to structure investments efficiently.

The UK-Australia DTA can mitigate double taxation, but relief must be claimed properly as certain income types (e.g., rental income) may still be taxable in both countries.

In Summary 

The new rules will have a significant impact on Australians living in the UK, both while they are living in the UK, and when they return home. For more about the tax implications of returning to Australia under the new rules see our article Australians Living In The UK: Returning To Australia Under The New Non-Dom UK Rules.

While the new rules may reduce the tax impact of residing in the UK for a period of less than four years, long-term residents will now be liable for UK taxes on their worldwide income. This is a significant departure from the current income remittance rules and will mean any Australian currently residing in the UK should seek tax advice regarding their worldwide assets and investments.