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20p Roulette payouts, odds and what each bet really costs
20p Roulette uses the standard European payout table. Nothing is shaved, nothing is boosted. That makes it a clean place to see what each roulette bet really costs, because the only variable is which pocket the ball lands in out of 37.
The payout table
| Bet | Numbers covered | Payout | Probability | Edge |
|---|---|---|---|---|
| Straight-up | 1 | 35:1 | 2.70% | 2.70% |
| Split | 2 | 17:1 | 5.41% | 2.70% |
| Street | 3 | 11:1 | 8.11% | 2.70% |
| Corner | 4 | 8:1 | 10.81% | 2.70% |
| Six line | 6 | 5:1 | 16.22% | 2.70% |
| Dozen / column | 12 | 2:1 | 32.43% | 2.70% |
| Red / black, odd / even, high / low | 18 | 1:1 | 48.65% | 2.70% |
The right-hand column never moves. A straight-up is riskier than red, but it is not a worse deal; both hand the house 2.7p of every £1 over the long run.
What that means at the £1 minimum
The spin minimum is £1, so the smallest possible bet on this table costs 2.7p in expected loss. One hundred spins at £1: £2.70. Five hundred spins: £13.50. The actual result will be nowhere near those numbers on any given night; they are the average across thousands of sessions.
At higher stakes
| Stake per spin | 100 spins | 300 spins |
|---|---|---|
| £1 | £2.70 | £8.10 |
| £2 | £5.40 | £16.20 |
| £5 | £13.50 | £40.50 |
| £10 | £27.00 | £81.00 |
Read it as the price of the time at the table, the way you would price a round of drinks. If the number in the box is more than you would spend on an evening out, drop the stake or the spin count until it is not.
Variance: why sessions do not look like the table
A £1 bet on red wins 48.65% of the time. Over 100 spins you expect about 49 wins and 51 losses, down £2.70. But a run of 55 wins or 43 wins is entirely ordinary. A £1 straight-up wins once in 37 spins on average; going 100 spins without a hit happens roughly one time in fifteen, and hitting three times in 100 is about as common. The expected loss is the same on both bets. The ride is very different.
Zero and the outside bets
On a European wheel without La Partage, which is this game, a zero takes every outside bet in full. There is no half-back rule and no en prison. That is already priced into the 2.70%, so nothing extra is being taken; it is just worth knowing that the green pocket is where the whole edge lives.
Your questions
- Why is the house edge the same on every bet?
Because every payout is set as if the wheel had 36 pockets, and it has 37. The missing pocket is the zero, and the shortfall works out at 1/37, or 2.70%, whatever you bet on.
- Does a five-chip number bet pay 35 to 1 per chip?
Yes. Five 20p chips on a winning number pay 35 × £1 = £35, and your £1 stake comes back too, so £36 lands in the balance.