Saturday Lotto draws every Saturday under several state names — TattsLotto in Victoria, Tattslotto and X Lotto elsewhere, Gold Lotto in Queensland, Saturday Lotto in NSW/ACT/Tasmania, and Saturday Lotto via Lotterywest in Western Australia. The format is identical across all of them: 6 main numbers drawn from 1–45, then 2 supplementary numbers drawn afterwards from the same pool.
Division 1 is the headline. To win it you need all 6 main numbers — supplementaries don't count for Division 1. The starting jackpot is A$4 million most weeks, climbing through Superdraw and Megadraw weekends to A$20M, A$30M, and occasionally beyond.
Division 2 wants 5 main numbers plus 1 supplementary. The supplementaries effectively double the chance of catching this tier compared with strict 5/6 — that's why Division 2 is harder to land than Division 3 in pure ratio, but pays significantly more per winner because fewer entries qualify.
Division 3 is straight 5 mains. It's the largest 'real money' tier most weeks — winners typically clear A$1,500–$3,000 depending on entry volume.
Division 4 is 4 mains. Per-winner payouts drop into the A$25–$60 range; Division 5 (3 mains plus 1 supplementary) is the smallest cash prize, usually around A$15–$20. Division 6, where it exists, returns the cost of a Game.
Prize pools are funded by a fixed percentage of ticket sales, not by ticket count. That means a quiet week with low entries can still produce decent per-winner payouts in the higher divisions — fewer ticket-holders splitting the same pool. Conversely, a Megadraw week with hundreds of millions in entries usually means more Division 1 winners each taking a smaller share.