The Fibonacci Betting System Explained
Learn how the Fibonacci betting system works, its mathematical basis, and how to apply it to casino games.
The Fibonacci Sequence
The Fibonacci sequence is a famous mathematical series where each number is the sum of the two preceding numbers: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89. In gambling, these numbers represent your bet units. You move forward in the sequence after a loss and back two steps after a win.
How to Apply It
Start with a base unit (e.g., $5). If you lose, move to the next number in the sequence. If you win, go back two numbers. If you're at the beginning or one step in, return to the start. The goal is to recover losses gradually rather than with the aggressive doubling of the Martingale.
Pros and Cons
The Fibonacci is less aggressive than Martingale, meaning slower bankroll depletion during losing streaks. However, bet sizes still escalate and you need more wins than losses to profit. The system is better for longer sessions but still cannot overcome the house edge.
Best Applications
The Fibonacci works best on even-money bets in roulette, pass/don't pass in craps, and player/banker in baccarat. Set a maximum step in the sequence (e.g., step 10) and reset if you reach it to prevent catastrophic losses.
Frequently Asked Questions
Written by
James Blackwood
12y expJames is a casino industry expert with over 12 years of experience covering the UK gambling market. He specialises in UKGC-licensed operators and responsible gambling compliance. His reviews are trusted by thousands of British players seeking safe, regulated online casinos.