The main contact number for individual tax queries with the Australian Taxation Office (ATO) is 13 28 61. For general business tax enquiries, including GST, ABN, and PAYG, the contact number is 13 28 66. Other key ATO contact numbers include 13 10 20 for superannuation queries and 13 11 42 for debt and lodgement issues. For callers outside Australia, the number is +61 2 6216 1111. These phone lines are typically open from 8:00 am to 6:00 pm local time, Monday to Friday.
