Before starting a Centrelink claim online, have your myGov login, identity documents, bank details, tax file number and contact information ready. You may also need documents about your income, assets, partner, children, rent or study, depending on the payment you are claiming. Keep digital copies or clear photos of supporting documents, and check that your details are current in myGov. The documents and information required can vary, so follow the prompts in your claim and check Services Australia for the latest requirements.