What is Fixed Odds?

Fixed-odds betting means the price quoted when you place the bet is the price paid if it wins, whatever the market does afterwards. This contrasts with pari-mutuel, or pool, betting — such as the Tote — where the dividend is unknown until the pool closes and depends on how the total stake is shared among winners. Worked example: you back a horse at 5.00 fixed. Even if it drifts to 8.00 or shortens to 3.00 by the off, you are still paid at 5.00. A £10 stake returns £50. In a pari-mutuel pool, the same horse might return a larger or smaller dividend depending on how much money ended up on it, and you would not know your return until the race went off. Fixed odds matter because they give certainty: you lock in your return at the moment of betting, which makes value assessment straightforward against your estimate of the true Implied Probability. The common mistake is assuming racing is always fixed-odds. The Tote runs on pool prices, and some books pay Best Odds Guaranteed — the larger of your fixed price or the Starting Price. Standard sportsbook bets, by contrast, are all fixed odds. Compare with pari-mutuel betting, the Starting Price and the Closing Line.