Inside Bets Overview: Detailed Guide to Roulette’s Number-Specific Bets

Inside bets are where roulette gets expensive — and exciting. While outside bets cover broad swaths of the table at low payouts, inside bets let you target specific numbers or tight clusters with payouts that start at 5:1 and go all the way to 35:1. The tradeoff is brutal: a straight-up bet on a European wheel hits 2.7% of the time. That means roughly 36 losing spins for every winner.

This guide covers every type of inside bet — straight-up, split, street, corner, and six line — with real probabilities, real payouts, and honest math about what they cost you over time. Whether you’re playing European, American, or French roulette, understanding these bets is essential for anyone who wants to do more than just bet red and hope. Along the way, we’ll connect to the roulette table layout and roulette betting grid for the full picture.

What Are Inside Bets Roulette and Why They Matter

Inside bets are wagers placed on the individual numbers or small groups of numbers located in the “inside” section of the roulette layout. Specifically, these consist of:

• Straight up bet: Betting on a single number.
• Split bet: Betting on two adjacent numbers.
• Street bet: Betting on a row of three numbers.
• Corner bet: Betting on a block of four numbers that meet at a corner.
• Six line bet (Double street): Betting on two adjacent rows of three numbers each, for a total of six numbers.

These bets contrast with outside bets, which cover larger sets of numbers like red/black, odd/even, or dozens. For a deeper understanding of those safer wagers, see our guide on outside bets overview.

The allure of inside bets lies in their potential payouts. The math works out to a straight up bet paying 35 to 1 — meaning a $10 wager can net $350 if the ball lands on your number. However, these payouts come with a steep price: the odds of winning are much lower compared to outside bets.

Why Inside Bets? The Risk-Reward Balance

Inside bets appeal to players chasing bigger wins in fewer spins. But they demand discipline. A player who sits down with $500 and fires $10 straight-up bets without a plan can burn through that bankroll in under an hour. Take the case of a $500 session who repeatedly places $10 straight up bets without a strategy; this can lead to rapid bankroll depletion since the probability of winning is only about 2.7% on a European wheel.

Conversely, mixing inside bets with prudent bankroll management can lead to solid session profits. One strategy I’ve seen work is alternating between split and corner bets, which cover multiple numbers and improve winning chances while still offering decent payouts. In practice, this means you're three spins in and place a $10 corner bet covering four numbers, increasing your chance of winning to nearly 11%, with an 8:1 payout.

The key takeaway: inside bets roulette offers high variance. You win big when you hit, but losses can pile up fast. That’s why a clear understanding of each bet’s math and odds is essential. For those interested in how betting systems attempt to manage this variance, our article on martingale system guide provides additional insights.

Breakdown of Inside Bets: Definitions, Payouts, and Probabilities

Let’s examine every major inside bet type with exact figures, including how the house edge varies between European, American, and French roulette.

Note on French Roulette: The La Partage rule applies only to even-money outside bets, reducing the house edge on those bets to ~1.35%. Inside bets pay standard odds and house edge remains 2.70%, so inside bets have the same edge as European but no La Partage benefit.

Straight Up Bet: The High-Risk, High-Reward Classic

The straight up bet is the quintessential inside bet—you place your chip directly on a single number. Hitting that number yields a 35:1 payout plus your original stake back.

Real Table Example

Take a player who has a $200 bankroll. They decide to place a $5 straight up bet on number 17 at a European roulette wheel.

• Chance of winning: 1 in 37 ≈ 2.70%.
• Payout if you win: $5 × 35 = $175, plus your $5 stake returned.
• Expected loss per spin: The expected value (EV) can be calculated as:
  EV = (Probability of Winning × Win Amount) + (Probability of Losing × Loss Amount)
  = (1/37 × $175) + (36/37 × -$5) ≈ $4.73 - $4.86 = -$0.13 per spin.

This means that for every $5 you bet over the long run, you can expect to lose about 13 cents on average due to the house edge.

You can see the temptation: a small bet can return you 35 times your money. But the odds are slim, and if you miss—which happens 36 out of 37 spins—you lose your $5. Over 100 spins, you’d expect to lose about $13.50 on average due to the house edge.

Variation in American Roulette

On the American wheel, the odds get slightly worse due to the extra double zero, pushing your winning chance to about 2.63%. The payout remains the same, but the house edge doubles to 5.26%, meaning your expected loss per $5 bet is roughly $0.26.

Running the numbers: Take a $25 session bankroll and imagine placing $5 straight up bets each spin for 100 spins; you might expect to lose about $26.30 on average. This highlights why many players prefer European or French roulette wheels when aiming for inside bets.

Split Bet: Two Numbers, Almost Double Your Chances

The split bet lets you cover two adjacent numbers by placing your chip on the line between them. This could be vertical or horizontal adjacency.

How It Works

• Payout: 17:1
• Probability (European): 2/37 ≈ 5.41%
• Probability (American): 2/38 ≈ 5.26%

If you wager $10 on a split bet, you stand to win $170 plus your stake back.

Practical Scenario

At a Las Vegas table with a $10-minimum, you might place a split bet on 14/17. If the ball lands on either, you pocket $170. But the house edge remains 5.26% due to the double zero, meaning your expected loss over time is about $0.53 per $10 bet.

To illustrate the risk, if you place 50 split bets of $10 each, you’re risking $500 total. With the house edge, your expected loss is 5.26% × $500 = $26.30. This makes bankroll management crucial when chasing inside bets.

Street Bet: Betting on a Row of Three Numbers

The street bet covers three numbers in a horizontal row. You place your chip on the outer edge of the row.

• Payout: 11:1
• Probability (European): 3/37 ≈ 8.11%
• Probability (American): 3/38 ≈ 7.89%

Example

On a $100 bankroll, you bet $15 on the street 7-8-9 in a European game. Your chance of winning that spin is roughly 8.11%. A win pays $165 plus your stake.

Players often use street bets when they feel confident about a section of the wheel, or to hedge between numbers. At a $10 minimum table, believing numbers 7 to 9 are “hot,” placing a street bet covers all three at once.

Despite the higher chance compared to straight up bets, the expected loss still follows the house edge:

• Expected loss per $15 street bet = 2.70% × $15 = $0.405 per spin on European wheels.

Corner Bet: Four Numbers in a Square

With a corner bet, you place your chip at the intersection point where four numbers meet. This covers all four numbers.

• Payout: 8:1
• Probability (European): 4/37 ≈ 10.81%
• Probability (American): 4/38 ≈ 10.53%

Real-Life Insight

Corner bets are a popular choice because they offer a decent hit rate with a reasonable payout. A $20 corner bet wins $160 plus stake if the ball lands on any of the four numbers.

For example, betting $20 on a corner covering 10-11-13-14 gives you a 10.81% chance to hit on a European wheel. Over 100 spins, you’d wager $2,000 total, with an expected loss of:

• $2,000 × 2.70% = $54 expected loss.

This shows the importance of balancing bet size with bankroll to avoid rapid losses.

Six Line Bet: Double Streets for Broader Coverage

This bet covers two adjacent rows, totaling six numbers. The chip goes on the line that separates the two rows.

• Payout: 5:1
• Probability (European): 6/37 ≈ 16.22%
• Probability (American): 6/38 ≈ 15.79%

Example

On a $500 starting bankroll, you bet $25 on the six line 1-2-3-4-5-6 on a European wheel. You have over a 16% chance to win, with a payout of $125 plus your stake.

Because it covers more numbers, the payout is lower, but your chance of winning grows proportionally.

Calculating expected loss:

• Expected loss per $25 six line bet on European wheel = 2.70% × $25 = $0.675 per spin.

This bet is often favored by players seeking a balance between risk and reward, as it offers a decent win frequency with moderate payouts.

House Edge and Probability: What the Numbers Mean for Your Bankroll

Here is a quick comparison of house edges across roulette variants for inside bets:

Key Point: No betting system or inside bet type can overcome the house edge. Over thousands of spins, the casino’s advantage remains constant. For a detailed discussion on why betting systems can't beat the house, see our article on martingale vs fibonacci roulette.

Responsible Gambling and Inside Bets

Because inside bets involve higher variance, it’s critical to manage your bankroll and set limits. For instance, betting $5–$10 per spin on inside bets at a $500 bankroll means you’re risking 1-2% per spin, a reasonable risk tolerance.

Avoid chasing losses by increasing inside bet sizes impulsively; this leads to rapid depletion of funds. Discipline and a clear plan—like Junko Bodie’s hit-and-run approach—are essential.

Practical advice: Set a session loss limit (e.g., 10% of your bankroll) and stick to it. If you start losing, walk away rather than increasing bets to recover losses. Responsible gambling ensures you enjoy the game without undue financial risk.

Table Summary of Inside Bets Roulette

Note: Expected loss per $10 bet is calculated as 2.70% × $10 = $0.27 for European roulette inside bets, reinforcing the consistent house edge regardless of bet type.

Try It Yourself

The best way to get comfortable with inside bets roulette is to test them without risking real money. Our roulette simulator lets you place straight up, split, street, corner, and six line bets across European, American, and French wheels.

Experimenting with each inside bet type can reveal which fits your style—do you prefer chasing the thrill of a straight up hit or spreading your risk with a six line? You’ll also see firsthand how the odds and payouts balance out over multiple spins.

By practicing here, you can develop your own strategy with full control over bankroll size and bet amounts, reinforcing the discipline so crucial in live play.

Frequently Asked Questions

What are inside bets in roulette?

Inside bets are wagers placed on specific numbers or small groups of numbers on the roulette table layout, including straight up, split, street, corner, and six line bets. They offer higher payouts but come with lower probability of winning compared to outside bets.

How does the house edge differ between European and American roulette for inside bets?

European roulette has a house edge of 2.70% on all inside bets due to its single zero wheel, while American roulette’s double zero increases the house edge to 5.26%, effectively doubling the casino’s advantage.

Can any betting system improve my odds with inside bets?

No betting system can change the built-in house edge. While strategies might manage your bankroll or betting size, the casino always maintains an advantage over the long run on inside bets. For more on this, visit our detailed discussion on labouchere system explained.

Which inside bet has the best chance to win?

The six line bet covers six numbers and has the highest probability among inside bets (~16.22% on European roulette), but it pays only 5:1. The straight up bet has the lowest chance (~2.70%) but offers the highest payout.

Does French roulette’s La Partage rule affect inside bets?

No. La Partage applies only to even-money outside bets, halving the house edge on those. Inside bets pay standard odds with a 2.70% house edge on French and European wheels.

Final Thoughts

Inside bets roulette form the backbone of any number-focused roulette strategy. Their appeal lies in the tension between risk and potential reward, but this tension demands respect for the underlying math and house edge. Take your time mastering each bet type’s probabilities and payouts, and always approach the wheel with a disciplined plan and bankroll controls firmly in place.

Once you’ve absorbed this knowledge, try simulating different inside bets to see which fit your temperament and style best. That hands-on experience is the next step toward turning roulette from random chance into a measured game of skill and strategy.

Related articles:

• Outside Bets Overview
• Martingale vs Fibonacci Roulette
• European vs American vs French Roulette Differences