Sports Betting Explained: Odds, Margin, In-Play Betting and Cash-Out

Sports betting is the main subject of this site. Unlike a slot, the result is not decided by a random number generator but by a real match — and the price of the bet is set by the bookmaker through the odds. This page is the hub: it explains the basics that apply to every sport and links to detailed pages on football, ice hockey, tennis and more. If you are looking at a particular brand such as Tipsport, the principles are the same; what differs is the range of markets and the settlement rules, which you always read at the operator.

How to place a bet, step by step

  1. Choose a sport and a match. For matches being played now, distinguish the pre-match from the in-play offer.
  2. Pick a market — match result (1X2), total goals or a handicap — and click the odds.
  3. The selection goes onto the bet slip. Add more matches and it becomes an accumulator; a single match is a single.
  4. Enter your stake. The slip shows the potential return: stake × odds.
  5. Check the odds have not moved and confirm. Placed bets appear in your account history.

A €10 stake at odds of 1.85 returns €18.50, a profit of €8.50. On an accumulator the odds multiply — why that is less of a deal than it looks is explained on the bet types page.

Odds, probability and margin

Most of Europe uses decimal odds; the UK traditionally uses fractional and the US moneyline, but they all express the same thing. The inverse of decimal odds is the implied probability the bookmaker is working with: 2.00 means 50%, 1.50 about 66.7%, 4.00 exactly 25%. If the odds were fair, the probabilities of all outcomes in a market would add up to 100%. In practice they add up to more, and the excess is the margin.

MarketOddsSum of probabilitiesMargin
Tennis, match winner1.80 / 1.9555.6% + 51.3% = 106.9%about 6.9%
Football, 1X22.10 / 3.40 / 3.6047.6% + 29.4% + 27.8% = 104.8%about 4.8%
Ice hockey, over/under 5.5 goals1.87 / 1.8753.5% + 53.5% = 107%about 7%

The odds in the table are illustrative examples for the calculation, not any bookmaker's offer.

The margin is not a fee you see written anywhere — it is built into every price. Adding up the probabilities is the fastest way to compare the cost of markets and bookmakers: the lower the total, the cheaper the bet.

In-play betting

In-play (live) bets are placed while the match is under way. Odds move with the score, the clock, red cards and injuries, and markets are suspended briefly after key events. There is usually a short delay between your click and acceptance; if the price changes in that window, the bet is rejected or re-offered at new odds. Settings for accepting odds changes automatically live in your profile or on the slip — check them before you start.

Bear in mind that the stream or data you are watching may lag behind the action. The bookmaker's feed is faster, so in-play betting is not a road to sure things; it is a road to quick decisions at a higher margin.

Cash-out: selling your bet early

Cash-out is the bookmaker's offer to buy your bet back before it settles. Simplified, the value comes from your original odds and the current odds on the same outcome, minus a margin. Example: you staked €10 at 3.00 and your team is now ahead, so the current price on them winning is 1.50. The fair value of the bet would be 10 × 3.00 / 1.50 = €20; the cash-out offer will be lower, perhaps €18 to €19, depending on the margin. Partial cash-out sells only part of the bet.

Cash-out makes sense as risk management — when circumstances change or you no longer want the swing. As a habit, it reduces your returns because you pay extra margin each time. Whether and when it is available is up to the operator.

Free bets, odds boosts and bet insurance

Bookmakers use several promotional tools. A free bet returns only the winnings, not the free-bet stake itself. An odds boost raises the price on a selected event, often with a low maximum stake. Bet insurance refunds the stake if, for example, an accumulator loses by one leg — usually as a free bet. Every one of these has terms worth reading before you accept; the mechanics are covered in Bonuses.

Sports we cover

Bankroll: how much to stake per bet

Your bankroll is the amount you are prepared to spend on betting in a month without it hurting your budget. A common rule is 1 to 2% of the bankroll per bet: on €200 a month, that is €2 to €4 per slip. A fixed stake protects you from the most common mistake — raising stakes after a loss to win it back.

Licensed operators generally offer deposit and loss limits too. More on the Limits and self-exclusion page.

Betting FAQ

How do I place a bet?
Choose a match and a market, click the odds, enter your stake and confirm the slip. Before confirming, check the odds have not changed and whether it is a single or an accumulator.
What is a bookmaker?
A company that prices sports outcomes and pays out winning bets. The margin built into the odds is its income.
How do I work out the margin?
Add up one divided by each price for all outcomes in a market. Anything above 100% is margin.
What is cash-out?
An offer to settle a bet early for an amount the bookmaker sets from the current odds. It includes extra margin.
What are the betting rules for a postponed match?
They are set by each operator. Commonly a bet is voided after a set period and the stake returned, but the details differ — read the rules.
See the partner offer