What is a bankroll?
Your bankroll is the capital you dedicate exclusively to betting. It's a sum you can afford to lose entirely without affecting your daily life: never the rent or grocery money.
The first rule is to separate this bankroll from your personal finances. A dedicated account, a fixed starting amount. As long as it stays isolated, you think in percentages and units, not emotions — and that's exactly what lets you last.
The golden rule: 1 to 3% per bet
The single most important principle in all of bankroll management: never stake more than 1 to 3% of your capital on one bet. This small betting unit lets you absorb losing streaks without going broke — and losing streaks happen to everyone, even the best.
Example: with a £1,000 bankroll and a 2% unit, you stake £20 per bet. Even a brutal run of 10 losing bets costs you only £200: you keep 80% of your capital and the ability to bounce back. Conversely, staking 20% per bet exposes you to ruin in just a few failures.
The risk of ruin rises sharply beyond 5% per bet. Discipline on the betting unit is non-negotiable.
Flat betting vs proportional staking
Two approaches dominate. Flat betting means always staking the same fixed amount (your unit), whatever the bet: simple, robust, ideal for beginners. Proportional staking adjusts the unit to the changing bankroll (2% recalculated each time), protecting capital when it drops and accelerating when it rises. In both cases, your return on investment measures whether the method works.
To track your real profitability and compare approaches, use our ROI calculator across all your bets.
The Kelly criterion: staking by value
The Kelly criterion goes further than flat betting: it calculates the optimal stake based on the value detected and the odds. The stronger a value bet, the higher the recommended stake — and vice versa. Mathematically, it's the strategy that maximises capital growth over the long term.
- ✓Full Kelly: the theoretically optimal stake, but very volatile.
- ✓Half Kelly (½): half the Kelly stake, much safer and recommended in practice.
- ✓Cautious fraction: a quarter Kelly for uncertain probability estimates.
Our Kelly calculator instantly computes the optimal stake (and its cautious fractions) from your odds and estimated probability.
Setting a realistic goal
Good money management also means reasonable goals. Aiming for a 5 to 10% ROI over a season is already excellent; promising to double your bankroll in a month leads straight to over-staking and ruin.
To set a numeric goal and know how much to stake to reach it, our target-profit calculator gives you the matching staking plan.
⚠️ Pitfall #1: "tilt". After a run of losses, the temptation to sharply raise stakes to "win it back" is the fastest way to empty a bankroll. A loss is recovered through method, never through emotion. Keep the same unit, always.
The management method in 4 steps
To put healthy bankroll management in place starting today:
- 1Define your capital: a sum you can afford to lose, isolated in a dedicated account.
- 2Set your unit: 1 to 3% of capital per bet, depending on your risk tolerance.
- 3Track every bet and measure your real ROI to know if your method is profitable.
- 4Adjust your unit to the changing bankroll, never giving in to emotion after a loss.
Frequently asked questions about bankroll management
What percentage of my bankroll should I stake per bet?
The benchmark is 1 to 3% of capital per bet. Beginners or cautious bettors stay at 1%, the more confident go up to 3%. Beyond 5%, the risk of ruin becomes high even with a good strategy.
What starting bankroll should I choose?
There's no ideal amount: choose a sum you can lose entirely with no impact on your life. What matters isn't the absolute figure but thinking in percentages: 1% of £200 or £5,000, the logic is the same.
Flat betting or the Kelly criterion, which to choose?
Flat betting is simpler and more robust, ideal for beginners or if your probability estimates are uncertain. The Kelly criterion (preferably half-Kelly) optimises capital growth, but requires reliable estimates and accepts more volatility.
How do I know if my bankroll management works?
The only judge is your ROI over a large number of bets: the ratio of net profit to total staked. A positive, stable ROI over several hundred bets indicates a sound method. Over a few bets, luck dominates and ROI means nothing.
What should I do after a long losing streak?
Above all, don't raise your stakes to "win it back". Keep the same unit, check you're still betting on value, and accept that losing streaks are part of the game. If your long-term ROI stays positive, variance will eventually smooth out.
Put it into practice
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