1. There are contributory and non-contributory parent visas

Source: SBS
2. Medical and characters tests
You have to pass health and character tests when you apply for a visa and again when the visa is granted.Image
3. Other options for working-age parents
Parents can apply for a 173 or 884 temporary visa which costs $29,130 and will grant them two years to live in Australia with full access to Medicare and full time work. They can use these two years to save the additional $19,000 required to switch to a permanent subclass 143 contributory visa.

Source: Photo by Public Domain-1
4. Parent visa applicants need a sponsor who is an Australian citizen, permanent resident or eligible New Zealand citizen
You also need to prove that you’re settled here, usually for at least two years. Visa applicants must also satisfy the balance of family test which proves most of their family lives in Australia.

Source: Getty Images
5. You must provide an Assurance of Support

Source: AAP