Gambling terms, explained straight

In poker or blackjack, bankroll management refers to the same principle but is applied to session or tournament play rather than sportsbook wagers.

Odds, Probability & Bankroll

Bankroll management

Bankroll management is the practice of setting aside a dedicated betting fund and sizing wagers as a fraction of that fund, so the bettor can withstand normal variance without going broke.

Also called
Money management, bankroll sizing, bankroll strategy23
Kelly formula
f* = (bp – q) / b, where f* is the fraction to wager, p is win probability, q = 1 – p, and b is profit per unit staked15
Recommended cap
2–3% of bankroll per single bet, with a minimum $1,000 bankroll for typical bet sizes14

Key points

  • The bettor treats the bankroll as separate risk capital and stakes a fraction of it, not a flat amount.12
  • If the bankroll grows, stakes grow proportionally; if it shrinks, stakes shrink, which limits ruin risk.14
  • Common approaches use the Kelly criterion reduced by a fractional Kelly (e.g. quarter or half Kelly) and a hard bet cap.15

Where this term is used

Odds & probability Bankroll management poker Applies the same bankroll concept to poker sessions and tournaments rather than sportsbook wagers. Odds & probability Bankroll management blackjack Applies the same bankroll concept to blackjack, often tied to advantage play or counting. Odds & probability Poker bankroll management tournament Covers bankroll strategies specifically for tournament poker, where buy-ins and variance differ from cash games. Odds & probability Kelly criterion A formula for optimal bet sizing that maximises long-term growth of a bankroll. Odds & probability Roulette payouts Explains the odds and payouts for roulette bets, relevant to bankroll planning for that game. Odds & probability Kelly betting A staking method based on the Kelly criterion, used to size bets relative to bankroll.

Sources

  1. Variance and Bankroll Management for Player Props wizardofodds.com Provides the core definition, the Kelly formula, fractional Kelly examples, and the 2–3% cap and $1,000 minimum bankroll recommendation.
  2. Money Management Advice - Tips & Strategies for Bankroll ... wizardofodds.com Supports the alternative names and the description of how bankroll management works.
  3. Video Poker: Bankroll Size vs. Risk of Ruin wizardofodds.com Supports the alternative name 'bankroll strategy'.
  4. プレイヤープロップの分散とバンクロール管理 jp.wizardofodds.com Supports the 2–3% cap and $1,000 minimum bankroll recommendation, and the description of proportional stake sizing.
  5. Kelly criterion en.wikipedia.org Supports the Kelly criterion formula and the mention of fractional Kelly.

Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.

Written and maintained by Ellis Warrender, writer and maintainer.

Last updated 28 July 2026. Spotted an error? Tell me and it gets fixed and logged on the corrections page.