La Partage is a roulette settlement rule, not a betting system. On an eligible single-zero table, when the ball lands on zero, the casino takes half of an even-money wager and returns the other half. The rule does not predict the wheel or turn roulette positive, but it materially reduces the cost of red/black, odd/even and low/high bets.
The rule should be confirmed on the specific table before play. For the broader game structure, compare GambleRoad’s roulette rules and odds guide and roulette rule history.
How La Partage settles a zero
Assume a €20 wager on red at a single-zero table. If a red number lands, the wager wins €20 and the original stake is returned. If a black number lands, the €20 is lost. If zero lands under La Partage, €10 is returned and €10 is lost. No second spin is required.
The rule applies to the wager’s settlement after zero, so it must be coded or announced as a table rule. The words “European roulette” do not guarantee La Partage. Many European single-zero games simply collect the whole even-money wager on zero.
Why the house edge falls from 2.70% to 1.35%
On a 37-pocket wheel, an even-money wager wins on 18 numbers, loses on 18 opposite outcomes and loses half on zero. For a one-unit stake, expected profit is (18/37 × 1) + (18/37 × −1) + (1/37 × −0.5) = −0.5/37.
The expected loss is therefore about 0.0135135 units per unit wagered, or 1.35%. Without La Partage, zero loses the full unit and the expected loss is 1/37, or 2.70%. The rule halves the edge on eligible wagers because it halves the loss created by the single zero.
Eligible and ineligible bets
| Bet | Standard payout | La Partage on zero? | Zero result |
|---|---|---|---|
| Red / Black | 1 to 1 | Yes | Half stake returned |
| Odd / Even | 1 to 1 | Yes | Half stake returned |
| 1–18 / 19–36 | 1 to 1 | Yes | Half stake returned |
| Dozen | 2 to 1 | No | Full stake lost |
| Column | 2 to 1 | No | Full stake lost |
| Straight, split, street, corner | 5 to 1 through 35 to 1 | No | Full stake lost unless zero itself is covered |
A common mistake is to treat every outside bet as eligible. Dozens and columns sit outside the number grid, but they are not even-money chances. The rule normally protects only the three pairs of 18-number 1:1 bets.
La Partage and En Prison are not identical
La Partage resolves the zero immediately by returning half the stake. En Prison usually holds the full even-money wager for a subsequent spin. Depending on the house rules, the next spin may release the stake, lose it or keep it imprisoned again.
Both rules can produce the same theoretical 1.35% edge under common formulations, but the bankroll path differs. La Partage provides immediate certainty. En Prison ties up the stake and introduces a second-spin procedure that must be read carefully. Do not assume one rule because the other is mentioned.
French rules and table labels
French casino regulation recognizes the 36 numbers plus a single zero and defines the standard simple chances such as red/black, odd/even and low/high. The current French casino-game rules provide the official framework, but individual table conditions still determine whether La Partage is offered in a particular venue or online game.
Online lobbies may use labels such as French Roulette, European Roulette, Classic Roulette or VIP Roulette. Open the rules panel and search for “La Partage,” “sharing rule,” or the exact zero settlement. A return-to-player figure near 98.65% for even-money play is a useful clue but not a substitute for the written rule.
The rule does not make progressions profitable
Martingale, Fibonacci and other progression systems change bet size after outcomes. They do not alter the probability of zero or the settlement formula. La Partage reduces expected loss per unit on eligible bets, which is valuable, but a progression still faces table limits, bankroll limits and long losing runs.
Because a progression creates larger later bets, the euro amount saved by La Partage on a zero may be larger, but so is the amount at risk. Expected loss remains 1.35% of total eligible turnover. The correct denominator is every unit wagered, not the starting stake.
Comparing session cost
| Eligible turnover | Expected loss at 2.70% | Expected loss at 1.35% | Expected saving |
|---|---|---|---|
| €100 | €2.70 | €1.35 | €1.35 |
| €1,000 | €27.00 | €13.50 | €13.50 |
| €5,000 | €135.00 | €67.50 | €67.50 |
| €10,000 | €270.00 | €135.00 | €135.00 |
These are long-run averages, not session forecasts. A player can win or lose far more over a short sample. The table shows why the rule matters most to repeated even-money turnover: it cuts the mathematical cost in half, but it does not reduce short-term variance to zero.
Compared with double-zero roulette, the difference is even larger. A standard American even-money bet loses two units of expected value per 38 units wagered, about 5.26%. La Partage on a single-zero wheel loses half a unit per 37, about 1.35%. That is roughly one quarter of the American edge, although short sessions can still produce any result.
Settlement records matter online because the zero result may be displayed quickly. The game history should show the original stake, zero outcome and half-stake return. If the history records a full loss despite the written La Partage rule, capture the round ID and rules version before contacting support.
La Partage changes expected cost but not the 18-in-37 probability of an even-money win. The zero still appears with probability 1/37, and ordinary losing colours or parity outcomes still lose the full stake. A short session can therefore look identical to standard European roulette when zero never appears. The benefit becomes visible only through the altered settlement whenever zero does occur. It reduces average loss, not outcome uncertainty.
Table minimums can offset the practical advantage for a small bankroll. A €10 La Partage table has the same 1.35% edge as a €1 table with the same rule, but each spin carries ten times the expected euro loss and much larger short-term swings. Compare rule quality and minimum stake together. A lower edge is not automatically a lower-cost session when the required wager is higher.
How to verify the rule before betting
- Confirm the wheel has one zero and no 00 pocket.
- Open the table’s rules rather than relying on the game title.
- Verify that zero returns half the stake immediately.
- Confirm the rule applies to red/black, odd/even and low/high.
- Do not assume dozens, columns or inside bets are protected.
- Check minimum and maximum stakes for the eligible outside bets.
- Record the settlement if a dispute occurs in an online game.
La Partage is one of the few roulette rules that changes the house edge in the player’s favor. Its value is precise: eligible even-money bets move from a 2.70% edge to about 1.35% on a single-zero wheel. The best use of the rule is simple—choose the correct table, verify the settlement and avoid adding systems that increase turnover or stake size without changing the odds.