With an offer on the screen, "cash out option betting" is a question of price. Cash out lets a bettor settle a bet before the event ends, for a sum the book offers at that moment. What does cash out mean in betting terms? The book buys the bet back. If the pick is going well, the offer is above the stake; if it is going badly, below. Either way the price includes a margin, and knowing how it is set makes the choice easier.
How does cash out betting work in practice? The book takes the current live odds of the bet winning, works out what the bet is worth at those odds, and offers a little less than that value. The gap is its margin on the buy back. A cash out bet calculator does the same sum from the outside: stake, original odds and current odds in, fair value out, so the offer can be compared with what the bet is really worth.
Can a bet be cashed out early? Usually yes, from the moment the market opens until close to the end, and cash out on live betting is where the option appears most. A partial cash out settles part of the stake and lets the rest ride. The cash out option betting sites show can also be set to trigger automatically at a chosen value, which saves watching the screen and removes one impulse from the choice.
Usually not. Most books exclude bets placed with bonus tokens from cash out, since the stake behind them was never real money.
The book works out what the bet is worth at the current live odds and offers slightly less, keeping the gap as its margin on buying the bet back.
The market may be suspended after a goal or key moment, the event may not offer the feature, or the bet was placed with a free token.
Given the stake, the original odds and the current odds, it returns the fair value of the bet, so the book's offer can be compared against it.