Bankroll Management Fundamentals
You can pick winners and still go broke. Bankroll management is the boring discipline that keeps you in the game long enough for skill to show up.
A bankroll is the money you've set aside specifically for betting — money you can lose without it affecting your life. Everything else flows from that number: how much you bet per wager, how you weather losing streaks, and whether you're still around when your edge finally compounds.
The 1–2% rule
Sharp bettors wager a small, consistent fraction of their bankroll per bet — typically 1% to 2% as a unit. A $1,000 bankroll means $10–$20 per bet. This sizing is small enough that a normal losing streak can't wipe you out, and large enough that a genuine edge compounds into real money over time. Bet sizing should scale with the size of your edge and your confidence, not your mood.
Unit (1%): $10 per bet
A 10-bet losing streak: -$100 (10% of bankroll)
Survivable — and mathematically normal over a long sample.
Expected value and variance
Expected value (EV) is what a bet is worth on average, over many repetitions. A +EV bet wins money in the long run even if it loses today; a -EV bet loses money over time even if it wins now. Variance is the swing — how much your results bounce around that long-run average in the short term. A +EV bettor with poor bankroll management can go broke during a bad variance stretch before their edge shows up.
Why discipline beats prediction
Even a bettor who beats the closing line — the hallmark of a sharp — will lose 45% of their bets. Long, painful losing streaks are statistically normal even for winners. The bettors who survive are the ones whose unit sizing keeps a downswing from becoming ruin. Discipline isn't glamorous, but it's the one variable entirely under your control.
- Size bets as a % of bankroll, not a fixed dollar amount.
- Re-baseline your unit as your bankroll grows or shrinks.
- Never chase losses with bigger bets — that's how bankrolls die.
- Track your results vs the closing line; the process matters more than any single week.
Key takeaway: Skill is necessary but not sufficient. Bankroll management is what keeps a +EV bettor alive through the variance so the edge can actually pay off. Bet small, bet consistent, and let the math work.