Paroli gambling system explained

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Paroli system

The Paroli gambling system is a positive progression system, based on a similar idea to that of compound interest - it adds to winnings rather than taking from them. It doesn't seek to chase losses and only increases bets after a win.

The Paroli differs from many other gambling systems in that it isn't fixed. The gambler has to decide in advance the size of the betting unit and also how many bets are to be made before removing any winnings i.e. the maximum stake to be risked.

See the Paroli in action

If you want to see a step-by-step video tutorial on the Paroli system, check out our Youtube video below.

Sequence of bets

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Used extensively in Roulette, the most popular form of the Paroli system is to bet three times and to double the stake after each win. If any bet loses, or all 3 bets win, the sequence restarts.

A winning series of 3 wins in a row would result in the following bets:

1, 2, 4, 1

Remember that the numbers represent betting units so if, for example, you're betting in £10 units, your bets are

£10, £20, £40, £10

The Paroli - tested

The table below shows how the Paroli fared in our systems tests.

For a reminder of the tests we use, check out our systems summary page…


1. Alternating win
2. Alternating loss
3. Consecutive win
4. Consecutive loss
5. Good win
6. Bad loss

Overall result for all 6 tests


4 units loss
7 units loss
10 units profit
7 units loss
19 units profit
10 units loss

1 unit profit

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Winning streaks

When conditions favour consecutive winning results, the paroli system fares very well. It could be said that any gambling system will fare well in a winning streak, but three consecutive wins hardly constitutes a streak.

Like the 1-3-2-6 and 1-3-2-4, the Paroli system is not at its best when results are alternating - returning a loss even in an 'overall win' situation. But in the 'bad loss' test, it results in only a mild loss - much less than, say, the Martingale.

Where to use the Paroli system

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