Definition
An inside bet is a wager in roulette placed on the inner section of the table layout, which contains the individual numbers 0 through 36. These bets cover specific numbers or small groups of numbers and offer higher payouts but lower odds of winning compared to outside bets.
In context
A player who puts a single chip directly on the number “17” is making an inside bet (specifically a “straight-up” bet). If it hits, they will be paid 35 to 1. If they place a chip on the line between 17 and 18, they are making a “split” bet, which is also an inside bet.
Why it matters
Inside bets are the “high-volatility” option in roulette. While they don’t change the house edge (which remains 5.26% on an American wheel), they drastically change the player’s experience. Players choose inside bets when they are looking for a large, single-hit payout rather than a slow, steady game.
Related terms
In detail
When you look at a roulette table, the layout is divided into two distinct areas. The “outside” contains the big boxes for Red/Black, Odd/Even, and dozens. The “inside” is the grid of 37 or 38 individual numbers. As a floor supervisor, I’ve noticed that the “inside” is where the most excitement—and the most frustration—happens.
The Menu of Inside Bets
Inside bets aren’t just about picking one number. There are several ways to “partition” the inside of the table:
- Straight Up (1 number): You place your chip in the center of a number box. Payout: 35 to 1.
- Split (2 numbers): You place your chip on the line between two adjacent numbers. Payout: 17 to 1.
- Street (3 numbers): You place your chip on the outer edge of a row of three numbers. Payout: 11 to 1.
- Corner / Square (4 numbers): You place your chip on the intersection where four numbers meet. Payout: 8 to 1.
- Six Line (6 numbers): You place your chip on the outer T-junction between two rows. Payout: 5 to 1.
The Math: High Risk, High Reward
The most important thing to realize about inside bets is that they do not “beat” the house edge. On a standard American Roulette wheel (with a 0 and a 00), the house edge on every inside bet is 5.26%. Wait, doesn’t the 35-to-1 payout sound great? Let’s look at the math: There are 38 pockets on the wheel. If you bet $1 on every single number (including 0 and 00), you would spend $38. No matter what number hits, you will be paid $35 plus your $1 bet back, for a total of $36. You lost $2. That $2 loss divided by your $38 wager is exactly 5.26%.
The “trap” of the inside bet is the payout. The human brain loves the idea of turning $10 into $350. It’s intoxicating. But the probability of hitting a straight-up number is only 2.63%. You are mathematically expected to lose 37 times for every 1 time you win.
Volatility and Bankroll Management
Inside bets are the definition of High Volatility.
- If you bet $10 on “Red” (an outside bet), your bankroll will likely go up and down slowly. You have a nearly 50% chance of winning on every spin. You can play for a long time on a small amount of money.
- If you bet $10 on “Number 7” (an inside bet), your bankroll will likely go in a straight line toward zero, with the rare chance of a massive vertical spike.
As a casino worker, I see players go “broke” much faster on the inside. They chase the high payout, and before the “law of averages” can kick in, their wallet is empty. To play the inside effectively, you need a much larger bankroll to weather the long losing streaks between wins.
Strategy and Table Etiquette
There is a specific “flow” to inside betting that new players should know:
- Colored Chips: Most casinos use “non-value” colored chips at the roulette table. Each player gets their own color so the dealer knows which “inside bets” belong to whom. You must tell the dealer what value you want those chips to have (e.g., “$1” or “$5”).
- Don’t Reach: If the table is crowded and you want to place a bet on the far side of the “inside” layout, don’t lean over and knock people’s drinks over. Hand your chips to the dealer and politely ask, “Split on 23/24, please.”
- The “No More Bets” Call: Because inside bets take time to place, players often try to sneak chips onto the layout while the ball is spinning. When the dealer waves their hand and says “No more bets,” they mean it. Any chips placed after that call will be returned (or “disqualified” if they win).
The Truth about the Inside
The inside of the roulette table is where the “gamblers” play, while the outside is where the “grinders” play. Neither one is technically “better” from a mathematical standpoint, because the house edge is the same. However, the inside bet is the only place on the table where you can experience a life-changing “win” in a single spin. Just remember: the casino pays for the lights and the fancy carpets using the 37 times you don’t hit your number.