Expected Value (EV) in Poker Explained

Expected value (EV) is the average outcome of a decision over the long run. Every poker decision — fold, call, raise, bluff — has an EV. Winning players consistently make positive-EV decisions; losing players consistently make negative-EV ones. Understanding EV transforms poker from gambling into a skill game.

How to Calculate EV

EV = (Probability of winning x Amount won) - (Probability of losing x Amount lost)

Example: You have a flush draw on the turn. The pot is 100, your opponent bets 50, and you estimate a 20% chance of hitting your flush on the river. If you hit, you win 150 (pot + their bet). If you miss, you lose 50 (your call).

EV = (0.20 x 150) - (0.80 x 50) = 30 - 40 = -10. This call is -EV; folding is correct.

EV of Different Actions

EV of folding

The EV of folding is always exactly zero. You do not gain or lose anything by folding. This is the baseline against which all other actions are compared.

EV of calling

Depends on your equity against the opponent's range and the pot odds you are getting. When your equity exceeds the pot odds, calling is +EV.

EV of raising

Raising adds fold equity to the equation. You can win the pot immediately when opponents fold, or win at showdown when they call. This makes raising often the highest-EV play with strong hands and certain bluffs.

Long-Run Thinking

A single hand outcome tells you nothing about whether your decision was correct. You can make a +EV call and lose. You can make a -EV bluff and win. What matters is the pattern: over thousands of decisions, +EV plays accumulate profit and -EV plays accumulate losses.