What is Back Bet?

How a Back Bet Works

When you place a back bet, you are backing a selection to succeed. You agree odds with a counterparty — either a bookmaker or, on a betting exchange, a layer — and stake an amount. If the selection wins, your profit equals your stake multiplied by the decimal odds minus one. For example, a £10 back bet at decimal odds of 4.0 returns £40 in total (£30 profit plus your £10 stake returned). If the selection loses, you forfeit your entire stake.

On a betting exchange such as Betfair, a back bet works in exactly the same way in principle, but your counterparty is another bettor acting as the layer rather than a bookmaker. The exchange charges a commission — typically a percentage of net winnings — on winning bets, which reduces your effective return. Commission rates vary by exchange and by account status, so always factor this in when assessing profitability.

A Worked Example

Suppose a tipster advises backing Arsenal to win a Premier League match at decimal odds of 3.50 with a £20 stake. If Arsenal win, your gross return is £70 (£20 × 3.50), giving a profit of £50. If the match ends in a draw or a Chelsea win, your £20 stake is lost. The calculation is straightforward: Profit = Stake × (Decimal Odds − 1).

Now place the same bet on an exchange at identical odds of 3.50, with the exchange charging 5% commission on winnings. Your gross profit is still £50, but after the 5% commission charge of £2.50, your net profit is £47.50. Over a long series of bets, this commission drag has a material effect on overall returns, which is why tipsters should ideally specify whether their advised odds are exchange or bookmaker prices.

Why It Matters When Judging a Tipster

Back bets are the standard unit of measurement for most tipster services. When reviewing a tipster's record, you need to know whether their profit figures are calculated at advised odds, starting price, or exchange prices — and whether exchange commission has been deducted. A tipster showing a healthy profit at early advised odds may show a much smaller, or even negative, return at SP or after commission. Always check how the proofing service records bets before drawing conclusions.

Strike rate and yield figures are only meaningful if you understand the staking method and the odds basis used. A tipster backing short-priced favourites can achieve a high strike rate but poor yield, while one backing longer-priced selections may show the opposite. Neither approach is inherently superior; what matters is consistent positive expected value over a statistically significant sample size. Scrutinise how back bet results have been recorded before committing to a subscription.

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