Powerball and Oz Lotto are Australia's two biggest-jackpot lotteries. When both are sitting at big numbers, the question everyone asks is: which one should I buy?
The answer changes every single week. Here's why, and how to figure it out.
The key differences
At a glance, these two games look similar — big jackpots, long odds, national draws. But the details matter:
| Powerball | Oz Lotto | |
|---|---|---|
| Cost per game | $1.58 | $1.50 |
| Jackpot odds | 1 in 134.5 million | 1 in 62.9 million |
| Draw day | Thursday | Tuesday |
| Base jackpot | $5 million | $4 million |
| Typical big jackpot | $50–150 million | $20–50 million |
Oz Lotto has better odds — but that's not the full story
Oz Lotto's jackpot odds are about half as hard as Powerball's (1 in 63 million vs 1 in 134 million). That sounds like Oz Lotto wins easily. But odds are only one factor.
Powerball jackpots grow much larger because the harder odds mean fewer winners, so the prize rolls over more often. A $100 million Powerball can offer better value per dollar than a $10 million Oz Lotto, even with worse odds — because the jackpot is ten times bigger while the odds are only twice as hard.
The sharing problem
Bigger jackpots attract more players, which means more potential winners sharing the prize. A $150 million Powerball might be split three ways, giving each winner $50 million. Meanwhile, Oz Lotto jackpots are smaller but less likely to be shared.
Our rating accounts for this automatically — we estimate expected shares based on historical data at each jackpot level.
Don't forget the other divisions
Both lotteries pay prizes across multiple divisions beyond the jackpot. These smaller prizes (division 2 through 7 or 9) actually contribute a significant portion of the expected return. Our value breakdown shows how much of each lottery's rating comes from the jackpot versus other prizes — just tap any row on the rankings table to see the split.
So which is better?
It depends on the week. When Powerball is at its base $5 million, Oz Lotto is usually better value. When Powerball hits $50 million or more, it often overtakes Oz Lotto. The only way to know on any given day is to compare the live numbers.
That's exactly what the Lotto Logic leaderboard does — updated every morning, one glance tells you which is the smarter buy right now.