Bankroll Management in Sports Betting: How Much to Stake and How to Survive Losing Streaks

What a bankroll is

Your bankroll is the amount set aside only for betting, money whose loss would not affect your life, bills or mood. Keep it separate from everyday money. Every staking rule below is expressed as a share of this amount.

Two simple staking plans

• Flat staking: the same amount on every bet, for example 20 on a 1,000 bankroll (2%). Easy to track and hard to get wrong.
• Percentage staking: always 2% of the current bankroll. Stakes shrink after losses and grow after wins, which slows the fall during a bad run.

Suppose seven losses in a row on a 1,000 bankroll at 2% per bet. With flat 20 stakes you are down 140, or 14%. With percentage staking the bankroll is 1,000 × 0.98⁷ ≈ 868, down 13.2%. The plans are close at small stakes; the difference grows with stake size.

Compare 10% stakes: seven losses leave 1,000 × 0.9⁷ ≈ 478, a 52% drawdown. The stake size is what hurts, not the plan.

Losing streaks are normal

Even a bettor who wins 55% of the time will meet long losing runs. As a rule of thumb, the longest losing streak over N bets is about ln(N × win rate) ÷ ln(1 ÷ loss rate). With a 55% win rate over 500 bets that is ln(275) ÷ ln(1 ÷ 0.45) ≈ 7 losses in a row.

Try your own numbers. The bigger the stake, the larger the share of the bankroll a perfectly normal streak consumes.

Sizing stakes

• A common range for flat or percentage staking is 1-3% of the bankroll per bet. Smaller if your probability estimates are uncertain.
• If you have an estimated edge, the Kelly criterion gives a theoretical maximum. Most people use a quarter or half of it, see our guide on Kelly staking.
• Cap the total exposure on events that happen at the same time or are correlated, such as several bets on the same match.
• Decide the rules in advance and write them down. Changing the stake after a loss is how bankrolls disappear.