A Centrelink online checklist should include your identification details, Tax File Number, bank account information and current contact details. Depending on the payment, you may also need evidence of income and assets, residency, relationship status, rent or mortgage costs, and any dependent children. Check the specific claim requirements through your myGov account linked to Centrelink, as Services Australia may request different documents for each payment. Have clear copies ready and follow the instructions on servicesaustralia.gov.au if you need help or are unsure what evidence applies.