The Age Pension rate is generally set nationally, so living in Darwin does not create a separate base payment. Your actual amount depends on factors such as your relationship status, income, assets and residency, and is decided by Services Australia. If you rent privately, you may also be assessed for Commonwealth Rent Assistance, subject to the relevant rules. You could also qualify for a Pensioner Concession Card or Northern Territory concessions, depending on your circumstances. Check current rates and eligibility at servicesaustralia.gov.au and nt.gov.au.