Roulette has inspired a wide range of staking approaches. Some are complex, others much simpler. The 3/2 Roulette Betting System belongs to the second group, often chosen by those looking for something straightforward to follow, whether online or in person.
In this blog post, you’ll find a clear walkthrough of how this approach plays out, where it tends to feel effective, where it does not, and how it compares with others that use a steady bet size.
Read on to learn more.
What Is the Three-Two Roulette Betting System?
The Three-Two Roulette Betting System works with two separate outside bets placed together in a specific pattern. One bet receives a slightly larger portion of the total, and the other slightly less. This set ratio gives the system its name.
A “unit” is the player’s chosen base amount. If you were to play using a £1 unit, for instance, then each round would involve a £5 total: £3 on one outside selection, £2 on another.
Commonly paired bets include options like Red with Even, or Black with Odd. These combinations touch a wide portion of the wheel, but not all of it. The setup aims to deliver frequent outcomes where something is returned, but there will still be spins where both bets miss entirely.
That being said, it’s important to remember that roulette is a game of chance. Regardless of approach, outcomes cannot be guaranteed.
How Does the 3/2 Roulette Betting System Work?
In each spin, if you chose to use this betting system, you would place two different even-money bets—say, Red and Even. The larger portion of the stake, three units, goes on the first selection. The remaining two units go on the second. If using £1 units, that’s £3 on Red and £2 on Even.
On a European wheel with a single zero, there are a few ways this can go:
- If the number is both Red and Even, both bets return something. The £3 bet brings in £3 profit, the £2 bet brings in £2 profit, for a £5 total gain.
- If it’s Red and Odd, the £3 bet wins, the £2 bet does not. Net gain: £1.
- If it’s Black and Even, the £2 bet wins, the £3 bet does not. Net result: a £1 loss.
- If it’s Black and Odd—or zero—both bets miss. That’s a full £5 down.
In this example using Red and Even, 27 out of 37 numbers on a European wheel would result in one or both bets returning something. This leads to a steady flow of partial or full returns, interrupted by occasional spins where nothing lands.
And because the total bet and structure stay the same each round, the system tends to be straightforward to follow. You aren’t shifting your stake sizes or trying to react to past results. You’re simply placing the same two types of bets in the same ratio again and again.
Pros and Cons of the Three-Two Roulette Betting System
This approach holds appeal for those who want a consistent method that doesn’t require constant adjustment. Even so, there are points to consider that may not suit every playing style.
Here are some of the potential benefits of this system:
- Simple to follow with just one unit size decision.
- Total stake per spin is consistent and predictable.
- Most numbers on the wheel return some value due to two outside bets.
- When both bets win, the return is typically higher.
- Single wins usually result in small gains or losses, depending on stake size.
On the other hand, there are some limitations to be aware of:
- Some numbers on the wheel remain uncovered, causing full losses on those spins.
- Fixed stakes mean no adjustment based on previous results.
- The underlying odds of the game do not change with this system.
- It doesn’t influence the overall expected outcomes over time.
This is where the biggest question often arises: Does it actually lead to better outcomes over time?
Is The 3/2 Betting System Profitable?
In terms of expected return, the Three-Two System does not shift the numbers in your favour. Every even-money bet on a European roulette wheel comes with a built-in edge of 2.70 percent. If you choose to use this system, you’re staking five units per round, so the average loss over time works out to about 0.135 units per spin.
The system changes the pattern of outcomes—not the outcome trend. You might see a sequence of small gains or near-break-even spins, punctuated by a few bigger wins when both bets hit. But you’ll also experience regular five-unit losses when neither does. Over enough spins, these effects balance out in line with the house advantage already present in the game.
The same applies to American wheels, where the additional double zero increases the number of losing outcomes. Adjusting the 3-to-2 ratio or choosing different pairs of even-money bets shifts how often each type of result happens, but not the broader mathematical picture.
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**The information provided in this blog is intended for educational purposes and should not be construed as betting advice or a guarantee of success. Always gamble responsibly.