Parental Relationship: The applicant must be the parent of an Australian citizen, permanent resident, or eligible New Zealand citizen in terms of aged parent visa.

Age Requirement (for Aged Parent Visa - Subclass 804): The primary applicant must be old enough to be granted the Age Pension in Australia.

Balance of Family Test: At least half of the applicant's children must be living in Australia as Australian citizens, permanent residents, or eligible New Zealand citizens, or more children live in Australia than in any other single country.

Sponsorship: A child who is an Australian citizen, permanent resident, or eligible New Zealand citizen must sponsor the parent.

Health and Character Requirements: All applicants must meet health and character requirements, including undergoing a medical examination and providing police clearance certificates.

You need to be sponsored by an eligible sponsor who is usually your child in Australia. The sponsor must agree to provide support, accommodation, and financial assistance for the first two years after you arrive in Australia.

Collect all necessary documents including identity documents, proof of relationship with your sponsor, health assessments, character documents, etc.

You can apply for the Aged Parent Visa (Subclass 804) either online through the Australian immigration website or by post. Follow the instructions carefully and ensure all required information and documents are provided.

Pay the visa application fee. The cost can vary, so check the current fee on the Department of Home Affairs website.

After submitting your application, you'll need to wait for it to be processed. Processing times can vary depending on various factors such as the number of applications received and individual circumstances.

You and all family members included in your application will need to undergo health examinations to ensure you meet Australia's health requirements. You'll also need to provide police clearance certificates from all countries you've lived in for 12 months or more in the last 10 years which is very essential.