Live in-play betting: odds, delays, cash-out and the rules

In-play betting, also called live or in-running betting, is betting while an event is under way. The UK Gambling Commission defines it simply as betting while the event is taking place. It works like pre-match betting, with three differences: prices move constantly, bets are delayed and sometimes refused, and you can usually cash out before the end. Each of those has a cost worth understanding.

How in-play odds move

Before kick-off, a price reflects the expected game. Once play starts, the bookmaker updates it from live data: the score, the time left, red cards, injuries, possession, even weather. For illustration, a team at 2.50 before the match might be 1.40 after scoring first and 4.00 after conceding.

Time matters even when nothing happens. In football, a 0-0 scoreline makes "under 2.5 goals" more likely with every minute, so its price shortens steadily. A favourite that is level late in a match drifts, because there is less time left for it to score.

The margin does not disappear in-play. Every live price still includes the bookmaker's cut, and it can differ from the pre-match margin on the same event. Check it by adding up the implied probabilities, as shown in our betting margins guide.

Bet delays and suspensions

When you place an in-play bet, it is not accepted instantly. The UK Gambling Commission's guidance explains that operators add a short delay between pressing "place bet" and confirmation so that the odds reflect the event's progress. The length varies by operator, by event and by how fast the data source is. Betting exchanges use delays too, to protect their own users from people with faster information.

If something happens during that delay, the bet may be rejected, or you may be offered the new price.

Suspensions are separate. The Commission notes that markets are suspended around incidents such as a free kick, corner or goal. While suspended, you cannot place bets or cash out.

Live streaming and latency

Many sportsbooks show live streams or animated match trackers. Any broadcast runs behind real life. The Commission's guidance calls this latency and gives the example of fans in a stadium seeing a goal before fans watching the same match online at home. That gap is why bet delays exist, and why someone watching a slow stream is always behind the market.

The Commission also says there are mandatory requirements for operators to inform bettors they may be disadvantaged by technical factors such as slower network speeds. Read a stream's conditions before relying on it, including whether you need a funded account or a bet on the event to watch.

Cash-out: how the value is priced

Cash-out lets you settle a bet before the event ends, for an amount the bookmaker sets. The fair value of a running bet is its potential return multiplied by its current chance of winning. The offer is lower than that because it is calculated from the bookmaker's own prices, which include a margin.

Worked example (illustrative figures, our calculation). You stake £10 on a team at 3.00. The potential return is £30. Midway through, your team leads, and its true chance of winning is now 65%.

• Fair value: £30 × 0.65 = £19.50.
• Cash-out offer: suppose the bookmaker prices the cash-out at odds of 1.65 for your team to win. £30 ÷ 1.65 = £18.18.
• The cost: £19.50 - £18.18 = £1.32, about 6.8% of the fair value.

You pay that margin again each time you cash out. If you take partial cash-outs repeatedly, the cost adds up.

The UK Gambling Commission says bookmakers reserve the right to withdraw cash-out at any time, that markets, and with them cash-out, are suspended around incidents such as goals, and that this makes it difficult to cash out a bet with multiple selections. Its guidance says operators offering cash-out must give clear terms on availability, acceptance and settlement. Read them before you rely on the button.

You can check the implied probability of any live price here:

Where in-play betting is allowed

Rules differ by country, and sometimes within one.

• Great Britain. In-play betting is offered by licensed operators. The Gambling Commission's guidance expects them to have policies for its risks, to monitor patterns of play across in-play and other gambling, and to step in with customers who may be at risk.
• Australia. The Australian Communications and Media Authority (ACMA) states that online in-play betting, meaning betting on a sporting event after it has started, is prohibited under the Interactive Gambling Act 2001. ACMA has said there is an exception for bets placed over the phone, but the bet information must be provided wholly via the phone call. In December 2023 it found that four brands, run by three operators, breached the rules by generating codes when customers built in-play bets on their websites or apps, which customers then quoted on phone calls to place the bets.
• United States. Sports betting is legal only in states that have authorised it, following the Supreme Court's 2018 decision in Murphy v. NCAA. Which live markets a sportsbook may offer depends on each state's rules, so check the state regulator.

Mistakes to avoid

• Betting off a delayed stream. The market already knows what you are about to see.
• Treating every price move as a signal. Most moves simply reflect the score and the clock.
• Cashing out by reflex. It is a sale back to the bookmaker at a price that includes its margin.
• Faster bets, faster spending. In-play markets let you bet every few minutes. Set a budget before the game starts and keep to it.

Where to bet

See our UK betting site listings, New Jersey sportsbook listings and the sports betting markets hub. For the basics, read how to read betting odds, sports bet types explained and parlays and bet builders.