Saturday Lotto odds
Saturday Lotto is Australia's longest-running weekly lotto. Queenslanders know it as Gold Lotto; it's TattsLotto in Victoria, Tasmania and the NT, and Saturday X Lotto in South Australia. It's one national draw, so the odds are identical whichever name is on your ticket.
How the Saturday Lotto draw works
Each Saturday night eight balls are drawn from a single barrel numbered 1 to 45. The first six are the winning numbers and the last two are supplementary numbers. You pick six numbers per game. The supps only count in Division 2 (five winning numbers plus a supp) and Division 5 (three winning numbers plus a supp).
Saturday Lotto odds for every division
| Div | To win | Winning combinations | Combinations | Odds (1 game) |
|---|---|---|---|---|
| 1 | All 6 winning numbers | C(6,6) | 1 | 1 in 8,145,060 |
| 2 | 5 winning numbers + 1 supp | C(6,5) × C(2,1) | 12 | 1 in 678,755 |
| 3 | 5 winning numbers, no supp | C(6,5) × C(37,1) | 222 | 1 in 36,689 |
| 4 | 4 winning numbers (supps don't matter) | C(6,4) × C(39,2) | 11,115 | 1 in 733 |
| 5 | 3 winning numbers + 1 or more supp | C(6,3) × [C(39,3) − C(37,3)] | 27,380 | 1 in 297 |
| 6 | 3 winning numbers, no supp | C(6,3) × C(37,3) | 155,400 | 1 in 52.4 |
| Any prize | 194,130 | 1 in 42.0 |
Out of 8,145,060 equally likely outcomes for one standard game. C(n,k) is “n choose k”, the number of ways to choose k items from n. Each game line only wins its highest division.
Where these numbers come from
Division 1. Every set of 6 numbers from 45 is equally likely, so the odds are simply the number of possible sets: C(45,6) = 45! ÷ (6! × 39!) = 8,145,060.
A supp division. For Division 2 (5 winning numbers + 1 supp) your game needs 5 of the 6 winning numbers, which can happen C(6,5) = 6 ways. The remaining 1 number must include at least one of the 2 supps. With one slot left that's just C(2,1) = 2 choices, giving 12 combinations, or 1 in 678,755.
Notice that Division 4 (four winning numbers) doesn't care about supps at all, so the 15 × 741 = 11,115 combinations for it include games that also caught one or two supps. That's why the formula uses all 39 non-winning balls rather than splitting them.
Saturday Lotto system entries
A system lets you mark more than 6 numbers and plays every standard game that can be made from them. A System 8 covers C(8,6) = 28 games, so its Division 1 odds are exactly 28 times better than a single game. It also costs 28 times as much.
| Entry | Games covered | Division 1 | Any prize |
|---|---|---|---|
| Standard game | 1 | 1 in 8,145,060 | 1 in 42.0 |
| System 7 | 7 | 1 in 1,163,580 | 1 in 25.4 |
| System 8 | 28 | 1 in 290,895 | 1 in 16.8 |
| System 9 | 84 | 1 in 96,965 | 1 in 11.9 |
| System 10 | 210 | 1 in 38,786 | 1 in 8.9 |
| System 11 | 462 | 1 in 17,630 | 1 in 6.9 |
| System 15 | 5,005 | 1 in 1,627 | 1 in 3.2 |
| System 20 | 38,760 | 1 in 210 | 1 in 1.8 |
A system doesn't change the value you get per dollar. You win the same number of games on average as you would from the same number of separate entries. What changes is how the wins are spread: because the games overlap, wins arrive in clusters. When a system hits, it usually pays several divisions at once. Pick a system size in the calculator, then use What would this system pay? to see the winning games for any result.
Saturday Lotto questions
- Are Gold Lotto and Saturday Lotto the same game?
- Yes. The Saturday night draw is shared nationally and sold under different state brands. Gold Lotto in Queensland uses the same numbers, divisions and odds as Saturday Lotto. (Queensland's Monday and Wednesday Gold Lotto draws are separate games.)
- What are the odds of winning anything in Saturday Lotto?
- About 1 in 42.0 per game. Most of those wins are Division 6, three winning numbers with no supp.
- Do some numbers come up more often?
- Over a short run, yes, some numbers will have appeared more than others. That is ordinary randomness. The balls have no memory, and every combination is exactly as likely as any other in the next draw.
- Does playing the same numbers every week help?
- No. Your chance each draw is the same whether you keep your numbers or change them. Picking less popular numbers (avoid birthdays, patterns and 1-2-3-4-5-6) won't make you more likely to win, but it may mean sharing a jackpot with fewer people.
- Are the odds the same in every state?
- Yes. These are national draws, so the numbers, divisions and odds are the same whichever state you buy in. Prize amounts per division vary from draw to draw depending on sales and the number of winners.
Odds are calculated from the game rules (6 from 45, 6 winning numbers and 2 supps, drawn Saturday) and checked against the operator's published odds in November 2026. Published figures are rounded, so the last digit can differ by one. Always check the official rules before you play.