Value bet meaning: what is a value bet?
A value bet is a bet where the odds on offer are higher than the true probability of the outcome justifies, giving the bettor a positive expected return over the long run.
Value has nothing to do with who’s likely to win. It’s about whether the price is wrong. A coin flip paying 2.20 is value. The best team in the world at 1.10 might not be.
The test is one line:
Value = your probability × decimal odds. Above 1.00, there’s value. Below, there isn’t.
The term is universal. US bettors also say “+EV”, short for positive expected value. It’s the same concept.
Example
A value bet. You rate a team’s chance at 50%, which makes fair odds 2.00. A bookie offers 2.20.
- 0.50 × 2.20 = 1.10. That’s a 10% edge in your favour.
- Place this bet 100 times at $10 and you’d expect about 50 wins: 50 × $22 = $1,100 back from $1,000 staked.
A bad bet that usually wins. A heavy favourite has a real chance of 80%, so fair odds are 1.25. The bookie offers 1.20.
- 0.80 × 1.20 = 0.96. You lose 4% in the long run.
- You’d win four times out of five and still go backwards.
Notice that the value bet loses half the time. Value isn’t about today’s result. It’s about what happens across hundreds of bets.
Watch out
- Everything rests on your 50%. If the true figure is 44%, the same 2.20 becomes a losing bet (0.44 × 2.20 = 0.97). Bookies have models, data and traders. Beating their number consistently is hard, and most people who think they’ve found value haven’t.
- Test yourself against the closing line. If the odds you take are regularly bigger than the final odds at kick-off, your estimates are probably decent.
- Compare bookies. The easiest value comes from one bookie simply being out of step with the rest.
- Value needs volume and patience. Long losing runs are part of it, so small, steady stakes are essential.
My value betting guide goes through how to estimate probabilities without fooling yourself.