Definition
A back bet is the most common and traditional form of sports betting. When you place a back bet, you are wagering that a specific outcome will happen -- a team will win, a player will score, or the total will go over. If your selection wins, you profit; if it loses, you lose your stake.
How It Works
Every bet you place at a traditional bookmaker is a back bet. You choose an outcome, decide your stake, and the bookmaker offers you odds. Your potential profit equals Stake x (Odds - 1). On betting exchanges like Betfair, "backing" is explicitly distinguished from "laying" because you can do both.
Example
You back Arsenal to beat Chelsea at odds of 2.20 with a $50 stake:
- If Arsenal wins: profit = 50 x (2.20 - 1) = $60, total return = $110
- If Arsenal draws or loses: you lose your $50 stake
Why It Matters
Understanding back bets as a concept becomes important when you start using betting exchanges. On an exchange, every back bet is matched against someone else's lay bet. This peer-to-peer model typically offers better odds than traditional bookmakers because there is no built-in margin -- only a small commission on winning bets. Knowing the distinction between backing and laying opens up strategies like matched betting, arbitrage, and trading.
On betting exchanges, back odds are usually better than at traditional bookmakers because there is no bookmaker margin -- just a small commission on winnings.