There is no fee to apply for Family Tax Benefit through Services Australia. The amount you may receive depends on factors including your family income estimate, your children’s ages, the level of care you provide and whether you qualify for Part A, Part B or both. Services Australia works out your entitlement and may adjust it after your income is confirmed, so an online estimate is only an indication. Check the current rates and eligibility requirements at servicesaustralia.gov.au or contact Services Australia for advice about your circumstances.