ICM (Independent Chip Model) is the mathematical framework that explains why tournament chips change value as you progress through a tournament.
What Is ICM?
ICM converts your chip stack into a dollar value based on the prize pool and remaining players. The key insight: the first chip you win is worth more than the last chip you lose.
Why Chips Change Value
In a cash game, every chip has equal value. In tournaments, doubling your stack doesn’t double your equity in the prize pool. This asymmetry drives all ICM adjustments.
Practical ICM Adjustments
Near the bubble: tighten up with medium stacks, loosen up with big stacks
At the final table: avoid all-in confrontations with similar stacks
Short-stacked: push wider because you have less to lose in equity terms
Big-stacked: attack medium stacks who can’t afford to call
ICM vs cEV
cEV (chip expected value) is the cash-game approach — maximize chips. ICM modifies this by factoring in tournament equity. Sometimes the cEV-optimal play is the ICM-worst play.
When to Ignore ICM
Very early in the tournament (far from the money, ICM pressure is minimal). Also in winner-take-all formats where only first place matters.
