Family Tax Benefit (FTB) rules are generally the same across Adelaide and the rest of Australia, so living in South Australia does not by itself change your eligibility. Services Australia usually considers your family income, the number and age of your children, your care arrangements and residency circumstances. You can claim Part A and, if eligible, Part B through myGov linked to Centrelink, either during the financial year or after lodging your tax return. The amount and final entitlement are decided by Services Australia, so check the current requirements at servicesaustralia.gov.au.