In live betting, prices change while the match is played. Cash out lets you close your bet before the end. Both rest on the same idea: the current probability.
What a goal does to prices
Take a simple Poissoni model. Before kick-off the expected goals are 1.5 for the home side and 1.2 for the away side. In the 30th minute the home side scores. 60 minutes remain, with expected goals of 1.0 and 0.8.
The bookmaker recomputes these probabilities all the time and adds its margin. That is why live prices can move very fast and show small gaps between bookmakers. Live markets also often carry a bigger margin, because the uncertainty about the price is larger.
How cash out is computed
The fair value of your bet is: potential return × current win probability. The cash-out offer is that value minus a margin.
Why it is usually a worse price
- You receive less than fair value every time you cash out.
- The margin is paid again on a bet that already paid its own.
- If you have a positive edge, every cash out reduces it.
Cash out has a use when you want to cut variance or close a bet for reasons that are not about price. It is not a gift. It is a second bet with its own margin.
Two practical details
Read prices as percentages. After the goal the fair oddsi of the home win are 100 / 71.8 = 1.39, down from 2.27 before. The move is large because a goal in the 30th minute changes the rest of the match a lot.
After a goal or a red card, the bookmaker usually suspends the market for a moment and posts new prices. Bets you send at that moment may be delayed or rejected. It is how it protects its price.
Cash out also comes in a partial form: you can take part of the money and leave the rest of the bet open. The logic is the same. The part you cash out pays a margin, the part you keep does not. What matters is always the same question: is the offer above or below your fair value.