Functional currency translation rules

The functional currency translation rules are an exception to the core foreign currency translation rules.

Under the core foreign currency translation rules, amounts in a foreign currency must be translated into Australian dollars (A$). There are also rules about when and at what exchange rate a translation is to take place for a given type of transaction.

Under the functional currency rules, you can use a currency other than A$ as the unit of account to work out your taxable income or tax loss. The core foreign currency translation rules continue to apply to amounts and transactions not covered by the functional currency rules.

If you are an eligible taxpayer who keeps your accounts solely or predominantly in a particular foreign currency, you can choose to use that foreign currency as the unit of account to work out your taxable income or tax loss.

If you have made such a choice (that is, an effective functional currency choice), you do not translate transactions you undertake in either a foreign currency or in your applicable functional currency into A$. Rather, you translate only your net amount of taxable income or tax loss calculated in your applicable functional currency, into A$.

The core foreign currency translation rules are contained in section 960-50 of Subdivision 960-C of the Income Tax Assessment Act 1997 (ITAA 1997).

The functional currency translation rules are contained in section 960-80 of Subdivision 960-D of the ITAA 1997.