Can Australians go to Bali without a visa?

Yes, Australian citizens can travel to Bali without applying for a visa in advance if their visit is for tourism purposes, or business purposes and doesn't exceed 30 days. This is possible under Indonesia's Visa Exemption arrangements for tourism and business. It’s important to remember this entry cannot be extended, and you must leave before the 30-day period ends. 

Any advice is general advice only and does not take into account your individual objectives, financial situation, or needs. As entry and visa requirements for Bali may change over time, it is your responsibility to verify entry and visa requirements with the official government authorities including the Indonesian Directorate General of Immigration, the Indonesian Embassy in Australia, or your local Indonesian Consulate.