Independent Chip Model (ICM)

A model that converts tournament chip stacks into their real-money equity based on payout structure.

Definition

The Independent Chip Model estimates the monetary value of each player's chip stack in a tournament by accounting for the prize structure, not just chip counts. Because tournament payouts are non-linear (doubling your chips does not double your money, since prizes are capped and paid in tiers), a chip is worth less the more you have. ICM therefore makes survival more valuable near pay jumps and the money bubble, encouraging tighter play than raw chip equity would suggest. It is used to make correct fold/call decisions, to negotiate final-table deals, and to evaluate risk when a bust-out has real financial consequences. ICM ignores skill, position, and blind pressure, so it is a simplification, not a complete model.

Worked example

On the money bubble, a player folds a marginally profitable all-in call because busting out means winning nothing, while surviving locks in a likely payout; ICM shows the fold preserves more real-money equity than the chips alone suggest.

Why it matters

Learners in tournaments need ICM to understand why 'chip-EV' correct plays can be money-losing near pay jumps. Professionals use ICM calculations to make precise bubble and final-table decisions and to evaluate deal offers fairly.

Related

Note: ICM is a simplified model that ignores skill edge, position, and future blind pressure; refinements exist, and its outputs are estimates rather than exact values.