How the Paroli works
The Paroli is a “positive” progression, the opposite of the Martingale: you raise your bet after a win, never after a loss. You play an even-money bet (red/black, odd/even, low/high).
After a win, double the bet by leaving the winnings on the table. As soon as you have won a number of spins set in advance (often 3), bank the profit and go back to the base bet. After a loss, you also go back to the base bet.
The idea: ride winning streaks while only ever risking your base bet. But winning 3 spins in a row only happens about once in nine attempts.
Strengths
- Each failed series costs only one base bet.
- In a winning series you replay your winnings, not your bankroll.
- No need for a big bankroll or big bets.
How it works in 3 steps
- Base betE.g. €10
- Win?Double the bet
- 3 wins or a loss?Back to the base bet
Bets, win after win:
Progression example (base bet: €10, target: 3 wins)
| Spin | Step | Bet (€) | Result | Net result (€) |
|---|
Tap a result to change it. ✓ = target reached, profit banked.
Random spins use the real odds: 18 chances in 37 of winning.
Paroli Calculator
Sequence results
- Bet on the last spin
- —
- Profit if the series succeeds
- —
- Loss if the series breaks
- —
- Chance of completing the series
- —
- Series your bankroll allows
- —
European roulette, even-money bet: 18 chances in 37 of winning and 19 of losing (the zero loses).
A series ends at the first loss: you then lose exactly one base bet, because the winnings already made were replayed.
Bets and net result
- Bet per spin
- Net result
- Net result with a flat bet (for comparison)
- Table limit (€500)
Limits and risks
- A successful series is rare: 3 wins in a row happen only about once in nine attempts.
- Small losses add up between two successful series.
- Aiming for more wins in a row pays more but succeeds far less often.
- It is tempting not to bank the profit and lose everything on the next spin.
- The Paroli does not remove the casino's mathematical edge (≈ 2.7% on European roulette).
No betting system guarantees a win: every spin is independent of the previous ones.
