La Partage roulette vs En Prison vs no special rule

La Partage has the clearest verified edge: 1.35% on qualifying single-zero even-money bets. En Prison reaches the same figure when a new zero on the resolution spin returns half the imprisoned stake. If that new zero takes the entire stake, the edge is about 1.39%. Standard single-zero rules remain at 2.70%.

The amounts apply the edge to total action across qualifying bets. Count an imprisoned stake once when measuring total action; only a separate new wager adds more action. They are long-run averages rather than a session forecast. One visit can finish above or below the figures because the wheel produces variable results.

Settlement strengths and limits

When La Partage and En Prison share the same expected value, the practical difference is the result path. La Partage always turns the zero outcome into a half loss. En Prison can end with the original stake returned, a full loss, or another result defined by the repeated-zero rule. That creates a wider spread of outcomes around zero and temporarily removes the stake from the available balance.

How to check a roulette table

1. Confirm the wheel. La Partage and En Prison are normally tied to a single-zero game with 37 pockets.
2. Open the help or paytable. Look for the rule name and a direct explanation of what zero does to Red/Black, Odd/Even, and Low/High.
3. Read the repeated-zero clause. An En Prison description should say what happens when zero lands on the resolution spin.
4. Check whether the feature is automatic. Some games apply one rule automatically, while some rule sets can offer a choice after zero.
5. Confirm the qualifying bets. Dozens, columns, and inside bets should remain outside the feature.
6. Review table limits. An imprisoned stake can remain unavailable for another spin, so the stake must fit the session budget without relying on immediate recovery.

The French Roulette label is a useful clue. It does not confirm that either rule is active. Some single-zero games use French labels or a racetrack while settling zero under standard rules. Availability can also differ by casino, jurisdiction, provider version, and lobby configuration.

A provider rule sheet or in-game help panel is stronger evidence than a lobby thumbnail. Our French roulette guide covers the broader game format, layout, and table selection, while this page remains focused on zero settlement.

What Surrender means on double-zero roulette

Some double-zero games use a half-back rule commonly called Surrender. When 0 or 00 wins, half of a qualifying even-money stake is returned. The resulting edge is 1/38, or 2.63%, because two green pockets each cause a half loss.

Surrender and La Partage produce similar actions but belong to different wheel structures. La Partage on single-zero roulette gives 1/74 = 1.35%. Surrender on double-zero roulette gives 1/38 = 2.63%. Our American vs European roulette comparison places both figures beside the standard wheel edges.

Betting systems cannot change the rule math

A staking sequence changes the amount risked after each result. It cannot change the 18 winning numbers, zero frequency, payout, or settlement procedure. Martingale, Fibonacci, D’Alembert, Labouchere, and similar progressions keep the same expected value per unit wagered.

En Prison can also interrupt a progression because part of the balance remains locked. Starting another step before the imprisoned stake resolves increases total exposure and may create overlapping sequences. La Partage settles immediately, yet a progression can still reach the table limit or session limit after losses.

The lower rule edge reduces theoretical cost at equal total action. It cannot guarantee a win or identify the next result. See our mathematical roulette strategy analysis and live roulette strategy guide for the limits of staking systems and bankroll plans.

Using the rule within a session budget

Total action counts every stake placed, including returned chips that are wagered again. One hundred $5 bets create $500 of total action. La Partage produces a theoretical average loss of about $6.76 across that action, compared with about $13.51 under standard single-zero rules.

Actual session results can differ sharply from either average. Even-money bets still lose on 18 numbered pockets, and La Partage still loses half when zero appears. En Prison may hold the stake and then lose it on the resolution spin. Set the stake, total budget, and stopping point before play, and avoid increasing bets to recover earlier losses.

Frequently asked questions

What does La Partage mean in roulette?

La Partage is a rule that returns half of a qualifying even-money stake when zero wins on a single-zero wheel. The other half is lost. It gives those bets a house edge of 1/74, or about 1.35%.

What does En Prison mean in roulette?

En Prison holds a qualifying even-money stake after zero. A matching result on the next spin usually releases the original stake without profit, while a losing result takes it. A new zero may lose the stake, return half, or keep it imprisoned under another stage. The table rules must state the procedure because it affects the exact house edge.

Are La Partage and En Prison mathematically equal?

They are equal when the En Prison settlement returns half the imprisoned stake after a second zero. A one-level version that loses the stake on that second zero has an edge of about 1.39%, slightly above the 1.35% La Partage edge. Expected value remains negative in both cases. Short sessions can finish with a gain or loss, and past spins do not change the next probability.

Which bets qualify for La Partage and En Prison?

Red, Black, Odd, Even, 1-18, and 19-36 qualify under the standard form of these rules. Dozens, columns, and inside bets do not qualify.

Does French roulette always include La Partage?

No. A French name, single-zero wheel, or French-language layout does not prove that the rule is active. Confirm La Partage or En Prison in the game information. Some rule sets offer a choice between a half return and imprisonment after zero; many online games apply one automatic settlement. The help screen should state which process is used.

Do these rules work on American roulette?

La Partage and En Prison are generally associated with single-zero games. A double-zero table may offer Surrender, which returns half of an eligible even-money stake after 0 or 00 and creates a 2.63% edge for that category.

Verdict

La Partage is the easiest favorable zero rule to evaluate. It resolves the bet immediately and gives qualifying single-zero even-money wagers a verified 1.35% house edge. Standard rules take the entire stake on zero and carry a 2.70% edge.

En Prison requires one extra check. A half return after the second zero matches La Partage, while a one-level version that loses on that result carries an edge of about 1.39%. Read the exact repeated-zero clause, confirm which bets qualify, and compare the result with the other choices in the live roulette hub.