The currency tax trap to avoid when selling overseas property as an Australian
It might sound illogical but, as an Australian tax resident, an overseas property sold at a loss can still be taxed as a profitable investment.
Effective tax planning is essential for any Australian tax resident with offshore assets, especially when selling property overseas.
Understanding how Australian tax rules apply, including the impact of currency exchange rates, residency status and local versus Australian reporting, can mean the difference between a well-managed outcome and an unexpected tax bill.
For returning expats or anyone holding international property, careful timing and planning are key.
It is not uncommon for Australian expats to assume that a property sold at a loss in a foreign currency will have no Australian tax consequence. After all, if the sale resulted in a financial loss, how could it possibly trigger a tax bill?
Unfortunately, under Australian tax law the reality can be very different and exchange rate movements often turn a loss into a taxable gain.
Example: UK property sold at a loss in GBP but a gain in AUD
Background
- Purchased in 2018 for £680,000 while living in the UK.
- Returned to Australia in July 2022 and became Australian tax residents.
- Property valued at arrival: £700,000.
- GBP–AUD rate at arrival: £1 = A$1.7857 (1 AUD = 0.56 GBP).
- Cost base in AUD for tax purposes: A$1,250,000.
Sale
- Sold in July 2025 for £650,000 in a depressed UK market.
- Selling costs: £10,000.
- GBP–AUD rate at sale: £1 = A$2.0833 (1 AUD = 0.48 GBP).
Currency Impact
| GBP Amount | GBP–AUD Rate | AUD Amount* | |
|---|---|---|---|
| Cost base (arrival) | £700,000 | 1.7857% | A$1,250,000 |
| Sale price | £650,000 | 2.0833% | A$1,354,166 |
| Selling costs | £10,000 | 2.0833% | A$20,833 |
| Net proceeds | - | - | A$1,333,333 |
Source: Australasian Taxation Services. Note: *approx amounts.
Capital gain calculation
Net proceeds: A$1,333,333 – cost base: A$1,250,000 = A$83,333 gain
Although in the UK the owners suffered a £30,000 capital loss, in Australia they made a taxable gain because the AUD had weakened significantly during their ownership as tax residents of Australia, inflating the value in Australian dollar terms.
Tax payable in Australia
Because the property was held for more than 12 months after becoming Australian tax residents, the 50 per cent CGT discount applies.
- Taxable gain after discount: A$41,666
- Assuming a 25 per cent marginal tax rate: A$10,416 tax bill
Key points to understand
- Under Australian tax law, capital gains and losses must be calculated in Australian dollars at the relevant dates.
- The overseas property cost base is reset to market value (in AUD) when you become a resident again.
- Currency movements between the date you became a resident and the date of sale can dramatically affect the Australian gain or loss.
- Even if you leave the sale proceeds in the foreign country and never convert them to AUD, the gain is still taxable income in Australia.
- If you sell within 12 months of becoming a tax resident of Australia, no CGT discount is available.
Key takeaways for expats
- Always assess overseas property sales using AUD figures to understand the true Australian tax outcome.
- Plan the timing of your property sales carefully.
- Keep full records in both local currency and AUD to support your CGT calculation.
- Do not assume that a foreign currency loss means no tax in Australia.
- Seek advice early, before starting a sales campaign to get a CGT estimate.
If you are returning or migrating to Australia and planning to sell overseas property or other foreign assets, after arrival, professional tax advice is recommended.
