Avoid Double Tax
Use treaty benefits and offsets to legally reduce your tax.
Tax deadline’s near. Got questions or need to lodge. Book the time with Consultant
Moving from the UK to Australia is a massive life adventure.
But untangling the financial ties between the two nations?
That is a notoriously frustrating headache.
We bridge the gap between HMRC and the ATO, helping you stay compliant in both countries and
While the UK and Australia have a Double Taxation Agreement (DTA) in place, the actual mechanics of how the two tax systems interact can create unexpected tax bills, compliance traps, and severe financial shocks. Once you become an Australian tax resident, the Australian Taxation Office (ATO) expects a cut of your worldwide income — and they do not care how HMRC did things back home.

The UK tax year runs from April 6 to April 5. The Australian tax year runs from July 1 to June 30. You cannot simply copy and paste your UK tax return into your Australian one.

Delays beyond six months can trigger a 15% ATO tax on investment growth (Applicable Fund Earnings), and large lump sums may breach Australian contribution limits, leading to a 47% tax penalty.

UK ISAs or Premium Bonds lose their tax-free status in Australia. All dividends, interest, and capital gains within your ISA are fully taxable as an Australian resident.

UK rental income must be reported to the ATO, even if minimal. Selling property can trigger capital gains tax in both countries, with currency fluctuations often inflating your taxable gain.

Determining when you cease UK tax residency and begin Australian residency is a complex legal test, not simply your arrival date. Get it wrong, and you could face premature global income taxation.
Most expats hire an accountant in the UK to handle HMRC and a separate agent in Australia for the ATO.
The problem? Neither truly understands the other side, leaving you stuck in the middle to translate.
ClearTax Accountants offers a unified, dual-qualified approach.
We look at your global financial footprint as one complete picture.
✔ Pre-migration tax planning and structuring
✔ Preparation and lodgement of both UK Self Assessment and Australian Tax Returns
✔ UK Pension to Australian Superannuation transfer advice
✔ Foreign Income Tax Offset (FITO) optimisation
✔ Capital Gains Tax planning for cross-border property sales


Don’t wait until tax season to find out you’ve made a costly cross-border mistake.
Let us handle the complexities of HMRC and the ATO so you can get back to enjoying your life in Australia.
©️ 2026 Clear Tax (ABN 49 623 860 819) | Liability limited by a scheme approved under Professional Standards Legislation. Our Disclaimer & Privacy Policy.