You can apply for an Australian Tax File Number after arriving in Australia on a temporary visa, permanent migrant visa, or temporary visitor visa.
You can apply online if you meet the following three conditions –
1. You are a temporary visitor, permanent migrant, or foreign passport holder.
2. You are in staying in Australia
3. You have one of the following visas:
– Permanent Migrant Visa
– Visa with work rights
– An overseas student Visa
– Visa allowing you to be in Australia indefinitely
When applying online, it is a requirement to have a valid passport or relevant travel documents. If it’s been applied correctly, you should receive your TFN within 28 days by post to the address you have provided online when completing the TFN application.
You can apply for your TFN here https://www.ato.gov.au/individuals/tax-file-number/apply-for-a-tfn/foreign-passport-holders,-permanent-migrants-and-temporary-visitors—tfn-application/