Complete Betting Broker Glossary

By David Thompson Last updated: April 29, 2026

Welcome to the most comprehensive betting broker glossary online. Whether you're new to betting brokers or an experienced bettor, this glossary defines 100+ essential terms in clear, easy-to-understand language.

From basic betting terminology to broker-specific concepts and advanced strategies, every term includes a detailed definition, real-world example, and links to related concepts. Use the search box or jump to any letter to find the term you're looking for.

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A B C D E F H I K L M O P R S T U V W

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A

Accumulator (Parlay)

A single bet that combines multiple selections (usually 2 or more). All selections must win for the bet to pay out. The odds are multiplied together, creating potentially large payouts from small stakes.

Example: You bet €10 on a 3-leg accumulator: Team A to win (2.00), Team B to win (1.80), and Team C to win (2.50). Combined odds = 9.00, so a win returns €90.

Arbitrage Betting (Arbing)

A strategy where you place bets on all possible outcomes of an event across different bookmakers to guarantee profit regardless of the result. This works when bookmakers have different odds for the same event.

Example: Bookmaker A offers 2.10 for Team X to win, Bookmaker B offers 2.10 for Team Y to win. By betting €100 on each, you guarantee a small profit no matter who wins.

Asian Bookmaker

Bookmakers based in or targeting Asian markets, known for accepting large bets, offering sharp odds with low margins, and not restricting winning bettors. Examples include Pinnacle, SBOBet, and ISN.

Example: Pinnacle is a popular Asian bookmaker accessible through brokers like AsianConnect, offering odds with margins as low as 2% compared to 10%+ at recreational bookmakers.

Asian Handicap

A betting market that eliminates the draw option by giving one team a virtual advantage or disadvantage. Popular in football/soccer betting. Half-goal and quarter-goal handicaps are common.

Example: Manchester United vs Southampton with Asian Handicap -1.5 on United means United must win by 2+ goals for the bet to win. A 1-0 United win loses the bet.

B

Bankroll

The total amount of money you have set aside specifically for betting. Professional bettors manage their bankroll carefully, typically risking only 1-5% per bet to avoid going bust during losing streaks.

Example: If your bankroll is €1,000 and you use a 2% staking strategy, you would bet €20 per selection.

Betting Broker

A service that provides access to multiple bookmakers through a single account. Brokers act as intermediaries, allowing bettors to place bets with various bookmakers without opening individual accounts with each one.

Example: AsianConnect is a betting broker that gives you access to 20+ bookmakers through one account, one balance, and one login.

Betting Exchange

A platform where bettors bet against each other rather than against a bookmaker. The exchange charges a commission on winning bets. You can both back (bet for) and lay (bet against) outcomes.

Example: On Betfair Exchange, you can back Liverpool to win at 2.00, or lay Liverpool (bet against them winning) at 2.00, effectively becoming the bookmaker.

Bookmaker (Bookie)

A company or individual that accepts bets on sporting events and other outcomes. The bookmaker sets odds and pays out winnings. Traditional bookmakers may limit or ban winning bettors.

Example: Bet365, William Hill, and Pinnacle are all bookmakers, but with different business models (recreational vs sharp).

C

Closing Line

The final odds available just before an event starts. Sharp bettors try to consistently beat the closing line as it's considered the most accurate reflection of true probabilities.

Example: You bet on Team A at 2.20 early in the week. By kickoff, the closing line is 1.90. You beat the closing line, indicating you likely found value.

Commission

The fee charged by betting brokers or exchanges on your bets. For brokers, commission typically ranges from 3-7% depending on the market. Unlike bookmaker margin (built into odds), broker commission is transparent.

Example: You win €100 profit on a bet through a broker with 5% commission. You receive €95 profit (€100 - €5 commission).

Closing Line Value (CLV)

A measure of whether you got better odds than the final odds before an event started. Consistently achieving positive CLV is a strong indicator of long-term profitability.

Example: You bet at 2.50, closing line is 2.20. Your CLV = +13.6% ((2.50-2.20)/2.20). Positive CLV suggests you found value.

D

Decimal Odds (European Odds)

Odds format showing total return (including stake) for every €1 wagered. Most common format in Europe and used by betting brokers. Easier to calculate than fractional odds.

Example: Odds of 2.50 mean a €100 bet returns €250 total (€150 profit + €100 stake). Formula: stake × decimal odds = total return.

Deposit Limit

The minimum amount you must deposit to open an account. Betting brokers typically have lower deposit limits than traditional bookmakers, with some as low as €10.

Example: AsianConnect has a €10 minimum deposit, allowing you to test the platform with minimal risk before committing larger funds.

E

Each Way (EW) Bet

Two bets in one: a win bet and a place bet. Common in horse racing and golf. You stake twice the amount (e.g., €10 each way = €20 total). If your selection wins, both bets pay. If it places, only the place bet pays.

Example: €10 each way on a horse at 10.00 odds (1/4 odds for places 1-3). Horse finishes 2nd. Win bet loses (€10), place bet wins at 10.00÷4 = 2.50 (€25 return).

Expected Value (EV)

The average amount you can expect to win or lose per bet over the long run. Positive EV (+EV) bets are profitable long-term; negative EV (-EV) bets lose money over time.

Example: A coin flip (50% chance) at 2.10 odds has positive EV. Expected return = 0.5 × 2.10 = 1.05 (5% profit per bet on average).

F

Fractional Odds (UK Odds)

Odds format showing profit relative to stake. Common in the UK and Ireland. The first number is profit, the second is stake required. Does not include your stake in the payout number.

Example: Odds of 3/2 mean you win €3 profit for every €2 staked, plus your €2 stake back. A €100 bet at 3/2 returns €250 total (€150 profit + €100 stake).

H

Handicap

A market where one team/player is given a virtual advantage or disadvantage to level the playing field. The favorite must overcome the handicap for bets on them to win.

Example: Team A is -1.5 handicap favorites vs Team B. Team A must win by 2+ goals for the handicap bet to win. A 1-0 Team A win loses the handicap bet.

Hedge (Hedging)

Placing a bet on the opposite outcome of an existing bet to reduce risk or guarantee profit. Common in accumulators when some legs have already won.

Example: Your 5-leg accumulator has 4 wins. The final leg could return €1,000. You bet €200 on the opposite outcome to guarantee some profit regardless of the result.

I

Implied Probability

The probability of an outcome as suggested by the betting odds. Calculate by dividing 1 by the decimal odds. Bookmaker margins mean implied probabilities add up to more than 100%.

Example: Decimal odds of 2.50 = 1÷2.50 = 0.40 = 40% implied probability. If you believe the true probability is higher than 40%, it's a value bet.

In-Play Betting (Live Betting)

Betting on events after they have started. Odds change in real-time based on what's happening in the game. Requires fast execution and often offers value opportunities.

Example: Pre-match odds on Team A to win were 2.00. After Team B scores first, Team A's odds drift to 3.50. If you believe Team A will come back, this offers value.

K

Kelly Criterion

A mathematical formula for optimal stake sizing based on your edge and bankroll. Prevents overbetting and maximizes long-term growth. Many bettors use fractional Kelly (e.g., half Kelly) to reduce variance.

Example: Formula: (odds × probability - 1) / (odds - 1). If you have 55% win probability at 2.00 odds: (2×0.55-1)/(2-1) = 0.10 = bet 10% of bankroll.

KYC (Know Your Customer)

Identity verification process required by betting platforms to comply with regulations. Typically requires proof of identity (passport/ID) and address (utility bill). Betting brokers generally have more relaxed KYC than traditional bookmakers.

Example: When withdrawing for the first time, you may need to upload a photo of your ID and a recent bank statement showing your address.

L

Lay Bet (Laying)

Betting against an outcome (acting as the bookmaker). Only possible on betting exchanges. If the outcome doesn't happen, you win. If it does, you pay out to the backer.

Example: You lay Liverpool to win at 2.00 with a €100 liability. If Liverpool doesn't win (draw or lose), you keep the €100 stake from the backer. If Liverpool wins, you pay €100.

Limit (Betting Limit)

The maximum amount a bookmaker will accept on a bet. Sharp bookmakers have high limits; recreational bookmakers limit or ban winning bettors. Betting brokers provide access to bookmakers with no practical limits.

Example: You consistently win at Bookmaker A. They reduce your max bet from €500 to €10. Through a betting broker, you can access the same odds without limits.

Liquidity

The amount of money available to bet at given odds, particularly on betting exchanges. High liquidity means you can place large bets without moving the odds. Low liquidity markets are harder to bet on at scale.

Example: On Betfair, Premier League matches have high liquidity (millions available), while lower-league matches might only have €10,000 available at your desired odds.

M

Margin (Bookmaker Margin)

The bookmaker's built-in profit, calculated by adding all implied probabilities together. A 100% market is fair; anything above is the bookmaker's edge. Sharp bookmakers have 2-3% margins; recreational books often have 10%+.

Example: A coin flip should be 2.00/2.00 (100% market). A bookmaker offers 1.90/1.90 (105.3% market), meaning a 5.3% margin.

Matched Betting

A strategy using free bets and promotions to guarantee profit by backing and laying the same outcome. Works by exploiting bookmaker bonuses. Not technically arbitrage since it relies on promotions.

Example: Bookmaker offers a €50 free bet. You back Team A to win with the free bet, then lay Team A on an exchange. Regardless of outcome, you profit around €40-45.

O

Odds

A numerical expression of the likelihood of an event and the potential payout. Higher odds = less likely to happen but bigger payout. Odds formats include decimal, fractional, and American.

Example: Decimal odds of 5.00 mean a €100 bet returns €500 (€400 profit + €100 stake). Implies a 20% probability (1÷5.00).

Overround (Vig)

The total of all implied probabilities in a market, expressed as a percentage. A fair market is 100%; anything above is the bookmaker's built-in profit. Lower overround = better odds for bettors.

Example: Two-way market with odds 1.90/1.90. Implied probabilities: 52.6% + 52.6% = 105.2% overround. The bookmaker's margin is 5.2%.

P

Parlay

American term for accumulator. A single bet combining multiple selections where all must win for the bet to pay out.

Example: A 3-team parlay at 2.00, 1.80, 2.50 odds = combined odds of 9.00. €50 stake returns €450 if all three win.

Pinnacle

One of the sharpest bookmakers in the world, known for accepting winners, offering low margins (2-3%), and high betting limits. Accessible through betting brokers like AsianConnect for many regions.

Example: Recreational bookmakers offer 1.85/1.85 on a match. Pinnacle offers 1.95/1.95 due to lower margins, providing better value for bettors.

R

ROI (Return on Investment)

The percentage profit or loss relative to total amount wagered. Used to measure betting performance over time. Formula: (Profit ÷ Total Staked) × 100.

Example: You wagered €10,000 total and made €500 profit. ROI = (500÷10,000) × 100 = 5%. A 5% ROI is excellent in sports betting.

S

Sharp Bookmaker

A bookmaker that accepts professional bettors, offers low margins (sharp odds), high limits, and doesn't restrict winning players. Examples: Pinnacle, SBOBet. Opposite of soft/recreational bookmaker.

Example: Pinnacle is a sharp bookmaker with 2-3% margins. Bet365 is recreational with 6-10% margins but offers promotions. Sharp books = better odds, no bonuses.

Single Bet

A bet on one selection only. The simplest form of betting. If your selection wins, you win. Opposite of accumulator/parlay.

Example: €100 on Manchester United to win at 1.90 odds. If they win, you receive €190 (€90 profit + €100 stake).

Soft Bookmaker (Recreational Bookmaker)

A bookmaker targeting casual bettors, offering promotions and bonuses but restricting or banning winning players. Higher margins (worse odds) than sharp bookmakers but more user-friendly.

Example: Bet365, William Hill are soft bookmakers. They offer free bets and promotions but may limit your account if you consistently win.

Stake

The amount of money you risk on a bet. Your stake is returned along with profit if you win. Lost if you lose.

Example: You stake €50 on odds of 2.50. If you win, you receive €125 total return (€75 profit + €50 stake). If you lose, you lose the €50 stake.

T

Tipster

Someone who provides betting tips or predictions, often for a fee. Quality varies widely. Professional tipsters provide detailed analysis and track their results transparently.

Example: A football tipster charges €50/month for daily tips, claiming 10% ROI. Always verify track record before paying for tips.

Totals (Over/Under)

A bet on whether the total points/goals scored in a game will be over or under a specified number. Common in football (goals), basketball (points), and tennis (games).

Example: You bet Over 2.5 goals in a football match. Final score 2-1 (3 total goals). You win. Final score 1-1 (2 total goals), you lose.

U

Unit

A standardized measure of bet size relative to your bankroll, typically 1% of total bankroll. Allows comparison of betting performance independent of bankroll size.

Example: Your bankroll is €1,000. One unit = €10 (1%). If a tipster says "bet 2 units," you bet €20 (2% of your bankroll).

V

Value Bet (Value Betting)

A bet where the odds offered are higher than the true probability of the outcome. Over time, value betting is the only way to profit from sports betting. Requires accurate probability estimation.

Example: You calculate Team A has a 50% chance to win. Bookmaker offers 2.20 (45.5% implied). This is a value bet since 50% > 45.5%.

Vigorish (Vig/Juice)

The commission or fee charged by a bookmaker, built into the odds. Another term for margin or overround. Lower vig = better odds for bettors.

Example: A fair coin flip should be 2.00/2.00. With 5% vig, the bookmaker offers 1.90/1.90, guaranteeing profit regardless of outcome.

W

Withdrawal

Taking money out of your betting account to your bank or payment method. Betting brokers typically process withdrawals within 24-48 hours, faster than many traditional bookmakers.

Example: You request a €500 withdrawal from AsianConnect on Monday. Funds typically arrive in your bank account by Wednesday.

Glossary FAQs

What's the difference between a betting broker and a bookmaker?

A bookmaker is a company that sets odds and accepts bets directly. A betting broker provides access to multiple bookmakers through a single account and charges a transparent commission. Learn more in our broker vs bookmaker comparison.

What does "sharp" mean in betting?

Sharp refers to professional-quality betting—sharp bookmakers have low margins and accept winning bettors, sharp bettors consistently find value, and sharp money moves odds toward true probabilities. See our sharp bookmakers guide.

How do I calculate implied probability from decimal odds?

Divide 1 by the decimal odds and multiply by 100. For example, odds of 2.50: 1÷2.50 = 0.40 = 40% implied probability. Use our betting calculator for instant conversions.

What's a good ROI in sports betting?

Anything above 5% ROI over thousands of bets is excellent. Most professional bettors target 3-8% ROI. Anything claiming 20%+ ROI long-term is likely unsustainable or dishonest.

Are betting brokers legal?

Yes, betting brokers operate legally in most jurisdictions. They act as intermediaries connecting you to licensed bookmakers. Check our betting broker legality guide for details on your region.

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Betting Odds Formats Explained - Deep dive into Decimal, Fractional, and American odds

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