Australia: should you fix your energy tariff?
How fixed and variable tariffs actually work in Australia’s market — compiled August 2026.
The AER’s Default Market Offer (DMO) and Victoria’s Default Offer (VDO) set a reference/ceiling price reviewed annually each July — most people are actually on a “market offer” that sits below this reference price, not the default itself. Market offers can be fixed-benefit-period or ongoing, and conditional discounts often only apply if you pay on time — read the terms carefully rather than just comparing headline rates.
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Market structure is accurate as of August 2026 but rules and rates change — always check the current terms of any specific deal before signing. This is not financial advice.