# Value bet

A value bet is a bet with positive expected value: your probability estimate is higher than the one implied by the odds. Formula: value = p × odds − 1; above zero means value.

## The math

You estimate an outcome at 50% and the book offers 2.10. Expected value: 0.50 × 2.10 − 1 = +5%. Every 100 staked returns 105 on average. If the odds were 1.90, the same estimate gives 0.50 × 1.90 − 1 = −5% — no value. The value bet calculator runs this for any inputs.


## Where the edge must come from

The odds already include the margin, so beating them requires an estimate better than the market's: a model, faster information, or a market segment the book prices lazily. «I feel the favourite wins» is not an edge.


## The distance caveat

Positive expected value pays only over a long series of bets. A +5% edge still loses the individual bet half the time — variance dominates short samples.


## On ScanGoal

The picks page publishes our model's value picks with results, calibration and CLV tables — losses included. Picks are also posted to the Telegram channel before kick-off.

## Related

- [Bookmaker margin](/glossary/bookmaker-margin) — /md/term/bookmaker-margin
- [Odds formats](/glossary/odds-formats) — /md/term/odds-formats

Source: https://scangoal.com/glossary/value-bet
Last updated: 2026-07-20 10:53:22 UTC