@Todd ********
that's wrong and a pretty wild statement to make, without even considering the exempt income remittances which requires no filing obligations or tax to pay there is also, Article 4 paragraph 3 in the Aus-Thai DTA which states;
"3. Where by reason of the preceding provisions, an individual is a
resident of both Contracting States, the status of the person shall be determined in accordance with the following rules, applied in the order in which they are set out.
(a) the person shall be deemed to be & resident solely of the
Contracting State in ₩hich a permanent home is available to the person;
(b) if a permanent home is available to the person in both Contracting states
or in neither of them, the person shall
be deemed to be a resident solely of the Contracting State in ₩hich the person has an habitual abode;
(c) if the person has a habitual abode in both Contracting States, or in neither of them, the person shall be deemed to be a resident solely of the Contracting state with which the
person's personal and economic relations are the closer."