You can apply for Family Tax Benefit online through your myGov account linked to Centrelink, or contact Services Australia if you cannot claim online. You’ll generally need details about your children, partner, care arrangements and estimated family income, along with any requested documents. You can claim during the financial year, then provide your income details after the year ends so Services Australia can balance your payment. Eligibility and the amount payable depend on your circumstances, including income and residency, so check the current requirements at servicesaustralia.gov.au.