Moving back to Australia from the UK: how to avoid costly tax mistakes

When moving back to Australia from the UK, the timing of your financial decisions could save or cost you hundreds of thousands in tax.

Knowing how your tax residency, investments, pensions and property work across both countries helps protect your wealth for a stress-free return.

Get your tax residency timing right

One of the most important considerations is when you stop being a UK tax resident and start being an Australian one.

Even small timing changes, like moving before or after a tax year ends, can make a big difference to your tax position.

With cross-border financial advice and expertise, you can structure your move in a way that reduces your overall tax burden from day one.

Review assets when returning to Australia from the UK

Before you move, take a full view of your assets across the UK and globally.

This includes investments, property, income streams and any interests in companies or trusts. Each carries different tax implications depending on when and where you act.

A key opportunity many overlook is that the UK does not have an exit tax. In some cases, delaying the sale of assets until after becoming an Australian tax resident can be more tax efficient.

Australia may rebase the value of your investments on arrival. This can reduce your capital gains exposure and, in the right circumstances, lead to significant tax savings.

Protect your UK pension and plan for retirement

Pensions are one of the biggest areas where poor timing can lead to unnecessary tax. Decisions made before leaving the UK, such as converting pensions too early, can result in avoidable tax on your income. In some cases, this has cost individuals a large sum.

With careful retirement financial planning, you may be able to:

• Access tax-free lump sums more efficiently while still in the UK
• Create a tax-efficient withdrawal strategy from your UK pension to support your retirement in Australia
• Transfer pensions over time using structured solutions, such as a Qualifying Recognised Overseas Pension Scheme (QROPS)
• Reduce both income tax and inheritance tax exposure

Upcoming changes make planning even more important. From 2027, UK pensions will be included in the UK inheritance tax system. For clients over 55, rising to 57 from April 2028, reviewing your pension strategy before you move back to Australia is essential to protect your retirement savings.

See also: How proposed new pension rules could affect your inheritance tax

Plan ahead if you own UK property

Holding on to UK property can make sense, but only if it is structured correctly.

If your property is mortgaged, refinancing from Australia can be difficult. Without planning, you may be left with limited options and higher borrowing costs.

Your long-term strategy should also evolve with age:

• If you are younger, holding property may support long-term growth
• If you are older, selling may help reduce inheritance tax exposure

Without the right approach, you risk a double impact of UK inheritance tax and Australian Capital Gains tax.

Stay compliant after you leave

Leaving the UK does not automatically end your tax obligations.

If you retain UK assets or income, you may still need to:

• File UK tax returns
• Register under the non-resident landlord scheme
• Take steps to receive certain income without UK tax deductions

Simple administrative actions can improve your tax position and prevent complications later.

Do not rely solely on the double tax agreement

The UK–Australia double tax agreement is designed to prevent double taxation, but it does not guarantee it.

In straightforward cases, tax paid in one country is usually credited in the other. However, more complex structures can still trigger unexpected outcomes.

Getting advice before you move ensures you are not caught out by rules that are often misunderstood.

Think ahead about your estate

Your residency position over time plays a key role in how your estate is taxed.

Spending sufficient time as a non-UK tax resident can reduce your exposure to UK inheritance tax on worldwide assets. Recent changes have shifted the focus to long-term residency, making forward planning even more important.

With the right structure in place, you can protect what you pass on to your family.

Planning your return to Australia? Get expert advice today to structure your finances, reduce tax and protect your wealth before you move. Call us now at +44 (0) 20 7759 7519 (UK) or email [email protected] and start building your future beyond borders.