The All-Time Biggest Australian Lottery Wins
Australian lotteries, operated by The Lott, have created hundreds of millionaires since national lottery games began in the 1970s. The era of truly massive jackpots began after Powerball's 2018 format change, which made Division 1 significantly harder to win. Here are the largest prizes ever offered:
| Rank | Amount | Game | Date | Winners |
|---|---|---|---|---|
| 1 | $200,000,000 | Powerball | 1 Feb 2024 | 1 |
| 2 | $160,000,000 | Powerball | Oct 2022 | 1 |
| 3 | $150,000,000 | Powerball | May 2024 | 1 |
| 4 | $150,000,000 | Powerball | 19 Sep 2019 | 3 (shared) |
| 5 | $112,000,000 | Oz Lotto | 6 Nov 2012 | 4 (shared) |
| 6 | $110,000,000 | Powerball | 18 Jul 2019 | 3 (shared) |
| 7 | $107,000,000 | Powerball | 17 Jan 2019 | 1 |
| 8 | $100,000,000 | Oz Lotto | Feb 2025 | TBC |
| 9 | $100,000,000 | Powerball | 16 Aug 2018 | 2 (shared) |
| 10 | $80,000,000 | Powerball | 26 Mar 2020 | 1 |
Powerball: The Jackpot Machine
Powerball dominates the record books because its 1-in-134.5-million odds mean Division 1 goes unclaimed far more often than other games. Before 2018, Powerball used a 6/40 + PB/20 format with Division 1 odds of roughly 1 in 76 million. The April 2018 format change to 7/35 + PB/20 nearly doubled the difficulty, and the results have been dramatic.
Since the format change, Powerball has produced multiple $100M+ jackpots — a phenomenon that almost never occurred under the old format. Key milestones include the first $100M+ jackpot in August 2018 (just four months after the change), the first $150M in September 2019 (shared three ways), and the record-shattering $200M in February 2024, won by a single entry from Victoria.
The average Powerball jackpot has roughly tripled since the format change. Division 1 is now won in approximately 25–30% of draws, compared to roughly 45–50% under the old format. This longer rollover cycle drives the massive prize accumulation that makes national headlines.
Oz Lotto's Biggest Moments
Oz Lotto held the Australian record at $112M for over a decade until Powerball surpassed it. That November 2012 draw was shared by four winners across multiple states. In February 2025, Oz Lotto returned to nine-figure territory at $100M, demonstrating that the 2022 format change (7/45 to 7/47) is creating harder Division 1 odds and bigger accumulations. Oz Lotto's 1-in-62.9-million Division 1 odds sit between TattsLotto and Powerball, making it the "middle ground" jackpot game.
TattsLotto Superdraws
TattsLotto takes a different approach to big prizes. Rather than relying on random jackpot accumulation, it schedules Superdraw ($20M) and Megadraw ($30M–$40M+) events several times per year. These predictable big-prize events drive enormous ticket sales. TattsLotto's 1-in-8.1M Division 1 odds make winning far more achievable than Powerball or Oz Lotto, though the maximum prizes are correspondingly smaller.
What Big Jackpots Mean for Players
When jackpots grow very large, ticket sales surge — sometimes tripling or quadrupling normal levels. This creates an interesting dynamic: your odds of winning don't change, but the expected number of Division 1 winners increases. A $200M prize shared three ways still delivers life-changing money, but the per-winner amount is dramatically different from a sole winner. Our Powerball analytics and Oz Lotto analytics pages track historical jackpot growth patterns so you can see how prizes accumulate over time.