An even money bet is a wager that pays 1 to 1 when it wins. If you stake $20 and win, the casino returns your $20 stake plus $20 profit.
In roulette, the standard even-money bets are red/black, odd/even, and low/high. They cover 18 numbered pockets, but the zero pockets are outside every one of those groups. That is why “even money” does not mean “true 50/50 odds.”
Plain Talk
The term describes the payout, not the probability.
A 1-to-1 payout means:
- bet $5 and win $5 profit;
- bet $25 and win $25 profit;
- bet $100 and win $100 profit.
It does not guarantee that the chance of winning equals the chance of losing.
| Roulette even-money bet | Winning numbered pockets | Standard losing results |
|---|---|---|
| Red | 18 red numbers | 18 black numbers plus zero pockets |
| Black | 18 black numbers | 18 red numbers plus zero pockets |
| Odd | 18 odd numbers | 18 even numbers plus zero pockets |
| Even | 18 even numbers | 18 odd numbers plus zero pockets |
| Low | Numbers 1–18 | Numbers 19–36 plus zero pockets |
| High | Numbers 19–36 | Numbers 1–18 plus zero pockets |
This page focuses on roulette. For the broader payout term, read Even Money. For layout and rule context, read Outside Bet, Red/Black Bet, La Partage, and En Prison.
Where You See Even-Money Bets
Even-money wagers appear on the outside section of a roulette layout. They are normally marked with large boxes for:
- red and black;
- odd and even;
- 1–18 and 19–36.
These bets are popular with beginners because the choices are easy to understand and the payout is simple.
The Nevada Gaming Control Board publishes approved roulette rules through its Rules of Play for Approved Games. Individual roulette variations may differ, so players should confirm the wheel, layout, and posted rules at the table. For safer-play guidance, the UK Gambling Commission’s safer gambling guidance emphasizes setting limits and not treating gambling as a way to make money.
Why Zero Creates the House Edge
Numbers 1 through 36 divide neatly into equal groups:
- 18 red and 18 black;
- 18 odd and 18 even;
- 18 low and 18 high.
If the wheel contained only those 36 pockets and the bet paid 1 to 1, the wager would be mathematically fair before operating costs.
Roulette includes one or more zero pockets:
- single-zero wheel: 0;
- double-zero wheel: 0 and 00;
- triple-zero wheel: 0, 00, and 000.
Zero is normally neither red nor black, neither odd nor even, and neither low nor high. Under standard rules, an even-money wager loses when zero appears.
The casino keeps the 1-to-1 payout while adding losing outcomes. That gap is the house edge.
Single-Zero Roulette Math
A single-zero wheel has 37 pockets:
- 18 winning pockets;
- 19 losing pockets.
Probability of winning:
18 ÷ 37 = 48.6486%
Probability of losing:
19 ÷ 37 = 51.3514%
The expected value of a $20 bet is:
EV = (18/37 × $20) - (19/37 × $20)
EV = -$0.54 approximately
The house edge is:
1 ÷ 37 = 2.7027%
That does not mean every $20 bet loses $0.54. A single bet either wins, loses, or is handled under a special zero rule. The figure is the average result over a very large number of wagers.
Double-Zero Roulette Math
A double-zero wheel has 38 pockets:
- 18 winning pockets;
- 20 losing pockets.
Probability of winning:
18 ÷ 38 = 47.3684%
Probability of losing:
20 ÷ 38 = 52.6316%
Expected value of a $20 bet:
EV = (18/38 × $20) - (20/38 × $20)
EV = -$1.05 approximately
House edge:
2 ÷ 38 = 5.2632%
The layout still says red, black, odd, even, low, and high. The extra zero almost doubles the expected cost compared with the standard single-zero version.
Triple-Zero Roulette Math
A triple-zero wheel has 39 pockets:
- 18 winning pockets;
- 21 losing pockets.
Probability of winning:
18 ÷ 39 = 46.1538%
Expected value of a $20 bet:
EV = (18/39 × $20) - (21/39 × $20)
EV = -$1.54 approximately
House edge:
3 ÷ 39 = 7.6923%
The difference between wheel types is not cosmetic. It changes the expected loss on every dollar wagered.
Wheel Comparison
| Wheel | Total pockets | Winning probability | House edge | Expected loss per $100 wagered |
|---|---|---|---|---|
| Single zero | 37 | 48.65% | 2.70% | $2.70 |
| Double zero | 38 | 47.37% | 5.26% | $5.26 |
| Triple zero | 39 | 46.15% | 7.69% | $7.69 |
Choosing single-zero roulette instead of double- or triple-zero roulette matters more than choosing red instead of black. All six standard even-money bets have the same expectation on the same wheel under the same zero rule.
What Happens When Zero Lands?
Under ordinary rules, the bet loses.
Some single-zero games offer special treatment for even-money wagers.
La Partage
La Partage means “the sharing.” When zero lands, half of the qualifying even-money stake is returned and half is lost.
Suppose a player bets $20 on red and zero appears:
- $10 is returned;
- $10 is lost.
On a standard single-zero wheel, La Partage reduces the house edge on qualifying bets from about 2.70% to about 1.35%.
The expected loss on $100 of total qualifying action becomes approximately $1.35 instead of $2.70.
En Prison
En Prison means the wager may be held for another spin when zero appears. The next result determines whether the original stake is released, lost, or handled under the specific table rule.
En Prison procedures vary. A player should read the posted rule rather than assume every French-style table uses the same sequence.
Important limit
La Partage and En Prison normally apply only to specified even-money wagers. They do not automatically protect dozens, columns, straight-up numbers, or other roulette bets.
Example: $50 on Even
A player places $50 on even at a single-zero table.
Possible outcomes:
| Result | Settlement |
|---|---|
| Ball lands on 2, 4, 6, and so on through 36 | $50 profit plus stake returned |
| Ball lands on an odd number | $50 loss |
| Ball lands on 0 | $50 loss unless a special zero rule applies |
Zero is not treated as an even number for the wager. Mathematically, zero is an even integer, but roulette betting categories are defined by the game layout and rules, not by a pure mathematics classroom definition.
That distinction causes many beginner disputes.
Even Money Is Not the Same as Low Risk
Even-money bets hit more frequently than straight-up number bets, so each result often feels less extreme.
A straight-up number wins about once in 37 spins on a single-zero wheel and pays 35 to 1. An even-money wager wins 18 times in 37 and pays 1 to 1.
The even-money bet has lower volatility per unit, but it can still produce large losses through:
- repeated wagers;
- long losing sequences;
- increasing stakes;
- multiple simultaneous outside bets;
- double- or triple-zero wheels;
- fast table pace;
- extended session length.
Frequent small outcomes can make risk feel invisible.
Total Action and Expected Cost
Expected loss is based on total money wagered, not only the original buy-in.
Suppose a player starts with $200 and makes 80 bets of $10 on red at a single-zero table.
Total action:
80 × $10 = $800
Expected loss:
$800 × 2.7027% = $21.62 approximately
At a double-zero table:
$800 × 5.2632% = $42.11 approximately
At a triple-zero table:
$800 × 7.6923% = $61.54 approximately
The player did not need an $800 bankroll to create $800 of action. The same chips may be recycled through many spins.
Why Betting Systems Use Even-Money Wagers
Progression systems usually target even-money bets because the 1-to-1 payout makes stake adjustments easy.
Common systems include:
- Martingale;
- reverse Martingale;
- d’Alembert;
- Fibonacci;
- Labouchere or cancellation systems;
- flat betting with stop points.
These systems change bet size. They do not change the wheel probabilities.
Martingale example
Starting with a $10 unit and doubling after each loss:
| Loss number | Next wager | Total lost before next wager |
|---|---|---|
| 1 | $20 | $10 |
| 2 | $40 | $30 |
| 3 | $80 | $70 |
| 4 | $160 | $150 |
| 5 | $320 | $310 |
| 6 | $640 | $630 |
| 7 | $1,280 | $1,270 |
The progression targets a $10 cycle profit, but seven losses require a $1,280 next bet after $1,270 has already been lost. Bankroll and table maximums eventually stop the sequence.
Zero counts as a loss under standard rules. A progression does not remove zero from the wheel.
Streaks and the Gambler’s Fallacy
After six black results, red is not due. After six low results, high is not more likely because the sequence “needs balance.”
Each fair spin is independent. On a single-zero wheel, the probability of red on the next spin remains 18/37 regardless of the previous colors.
The belief that recent results must quickly reverse is the Gambler’s Fallacy.
The opposite belief is also wrong: a streak does not make a category hot. A display board shows history, not a forecast.
Can One Even-Money Bet Be Better Than Another?
On the same fair wheel with the same rules, no.
Red and black have the same number of winning pockets. Odd and even have the same number. Low and high have the same number.
A player may prefer one category for personal reasons, but the mathematical expectation is equal.
Differences can arise only from factors such as:
- different posted rules;
- a promotion or special wager condition;
- an unusual wheel or variant;
- La Partage or En Prison eligibility;
- an actual verified equipment issue.
A recent streak is not a mathematical difference.
From the Casino Side
Even-money bets are operationally efficient.
They are easy to explain, easy to place, and generally quick to settle. They also allow new players to participate without understanding complex inside combinations.
The dealer and supervisor still must control:
- the correct wheel and layout;
- the exact zero configuration;
- clear placement before “no more bets”;
- chips straddling multiple betting areas;
- overlapping wagers;
- accurate 1-to-1 payouts;
- La Partage or En Prison procedures where offered;
- late bets and disputed bets;
- table minimums and maximums.
A simple bet can still create a complex layout when many players place stacks across several outside sections.
Common Misunderstandings
“Even money means a 50% chance.”
No. It means a 1-to-1 payout. Zero makes the losing side larger.
“Zero is even.”
In mathematics, zero is even. In roulette betting, zero is excluded from the odd/even wager and normally causes both to lose.
“Red/black is safer than odd/even.”
They have the same hit rate and house edge on the same wheel under the same rules.
“Outside bets have a lower house edge than inside bets.”
On standard roulette, most ordinary wagers on the same wheel share the same house edge. The volatility differs. Special zero rules can improve qualifying even-money wagers.
“A progression beats the house because wins are common.”
The high hit rate does not remove the edge. Larger stakes eventually collide with a losing run, bankroll limit, or table maximum.
“The display board tells me what is coming.”
It records previous results. It does not change the next spin’s probability.
Hard Truth
Hard Truth: Even money describes the payout. Zero describes the business model.
Player Checklist
Before making an even-money roulette bet, confirm:
- single, double, or triple zero;
- whether La Partage or En Prison applies;
- table minimum and maximum;
- whether the bet is clearly inside the intended box;
- how many spins you plan to play;
- your average total stake per spin;
- whether you are adding multiple outside bets;
- whether a progression can exceed your bankroll;
- your time and loss limit.
The lowest-edge standard choice is generally a qualifying even-money wager on a single-zero wheel with La Partage or equivalent favorable treatment, when legitimately offered.
Related Terms
| Term | Relationship to even-money betting | Read next |
|---|---|---|
| Even Money | General term for a 1-to-1 payout | Even Money |
| Outside Bet | Layout category containing the main even-money bets | Outside Bet |
| Red/Black Bet | Color-based even-money wager | Red/Black Bet |
| La Partage | Half-loss treatment when zero lands | La Partage |
| En Prison | Holds the wager after zero under specified rules | En Prison |
| House Edge | Long-run casino advantage | House Edge |
| Expected Value | Average value of repeated wagers | Expected Value |
| Gambler’s Fallacy | Mistaken belief that a category is due | Gambler’s Fallacy |
FAQ
What are the six standard roulette even-money bets?
Red, black, odd, even, 1–18, and 19–36.
What does 1-to-1 payout mean?
Your profit equals your stake. A winning $30 wager produces $30 profit and returns the original $30 stake.
Is zero odd or even in roulette?
For roulette settlement, zero is neither odd nor even. Both bets normally lose when zero lands.
Are even-money bets the safest roulette bets?
They have lower result volatility than straight-up numbers, but they still carry the wheel’s house edge and can lose heavily through repeated action or progression betting.
Which even-money bet is best?
On the same wheel under the same rules, all six have the same mathematical expectation. Wheel type and zero treatment matter more than the category selected.
Does La Partage make the bet positive?
No. It reduces the house edge on qualifying single-zero even-money wagers to about 1.35%, but the expectation remains negative.
Can I combine red and even?
Yes, if the layout and limits allow it, but you are making two separate wagers. Some numbers may win both, some win one, and zero loses both under standard rules.
Deeper Insight
Even-money betting teaches one of the most important gambling lessons: payout language can hide probability structure.
The casino does not need to underpay the winning side. It can pay a clean 1 to 1 and still hold an advantage because the losing set contains the zero pockets.
The practical cost of a roulette session can be estimated as:
Average total stake per spin × number of spins × house edge
Example on a double-zero wheel:
- average total stake: $30;
- spins played: 60;
- total action: $1,800;
- house edge: 5.2632%.
Expected loss:
$1,800 × 0.052632 = $94.74 approximately
The player’s actual result may be a large win or loss, but the expected cost reveals what repeated simple-looking bets are doing underneath.
Related Reading
Continue with Roulette, Outside Bet, Red/Black Bet, Zero, and Double Zero. For the mathematics, read House Edge, Expected Value, and Variance. If a progression or chase is replacing a planned entertainment budget, stop and use the Responsible Gambling resources.