Bankroll management is the discipline of allocating your betting capital across wagers to avoid ruin while maximizing long-term growth. Even bettors with genuine edge can go broke with poor bankroll management.
Core principle: Bet a fixed percentage of your bankroll per wager. The standard recreational approach is flat betting at 1-2% of bankroll per unit. The mathematically optimal approach for confirmed-edge bettors is Kelly Criterion sizing.
Why units matter: Expressing performance in units (not dollars) normalizes across different bankroll sizes and makes win rate + ROI meaningful metrics.
Variance expectation: A 55% win-rate bettor at -110 has a 16% chance of being down after 100 bets. A 52% win-rate bettor has a 37% chance. Knowing your variance band prevents panic-abandoning a valid strategy.
Staking tiers: Many professionals use a tiered system — 1 unit for standard plays, 2 units for high-confidence plays, 0.5 units for speculative plays. The key is that even maximum unit size should never exceed the Kelly recommendation for the confidence level.
Record-keeping: Bankroll management only works if you track every bet. Date, event, pick, odds, units, result. The data reveals your real ROI, win rate by market type, and CLV — all required to assess whether your edge is real.