Bankroll management for sports bettors
A bankroll is the money you can set aside for betting and afford to lose. Managing it is about staying in the game, not about guaranteeing profit.
Set a budget first
Use only money you would spend on entertainment. Never bet rent, bills or borrowed money. Decide the total for the month before you start, and treat it as spent.
Flat staking
The simplest approach is a fixed unit, commonly 1% to 2% of the bankroll per bet. With a $1,000 bankroll, one unit is $10 to $20. A losing streak of ten bets costs about 10% to 20%, not everything.
The Kelly criterion
Kelly gives the stake that maximizes long-run growth when you know your edge: f = (b × p − q) / b, where b is the net odds received (profit per $1 staked), p is your win probability and q = 1 − p.
Example: a +150 bet has b = 1.5. With p = 45%, f = (1.5 × 0.45 − 0.55) / 1.5 = 0.0833, or 8.3% of the bankroll. Full Kelly is aggressive, and it assumes your probability is exactly right. Most people who use it stake a fraction, for example a quarter, which here would be about 2%.
Mistakes that drain a bankroll
- Chasing losses with bigger bets.
- Raising stakes after wins because you feel hot.
- Parlays as the default bet: the margin adds up.
- Betting without a record. Track every bet with odds, stake and result.