Family Tax Benefit (FTB) rules are generally the same across Cairns and the rest of Australia. Eligibility and payment rates can depend on your family income, the number and age of your children, care arrangements and residency requirements. You can claim through myGov linked to Centrelink, and Services Australia will assess your circumstances, including any required income estimate and end-of-year balancing. Check the current details at servicesaustralia.gov.au or speak with Services Australia if your situation is complex.