Stake

The stake is simply how much you put on. Ten pounds on a horse is a £10 stake. The word does most of its work in two places: when a bookmaker quotes returns, and when the size of your stake is itself the decision being made.

Stake, returns and profit

Bookmakers quote returns in two conventions, and confusing them is the most common arithmetic error in betting.

Fractional odds return profit only. A £10 stake at 5/1 wins £50 profit. You receive £60, the £50 plus your £10 back. The stake is returned separately.

Decimal odds include the stake. The same bet at 6.00 returns £60 total. The stake is already inside the number.

So a “return” of £60 and a “win” of £50 describe the same outcome. When comparing offers, check which one a figure refers to.

Stake sizing as a decision

In sports betting, stake size is usually discussed in units rather than currency. One unit is a fixed percentage of your bankroll, commonly 1% to 2%, so that a bettor with £500 and a bettor with £50,000 can discuss strategy in the same terms.

Flat staking, where every bet is the same size regardless of confidence, is unglamorous and hard to beat. It removes the main way recreational bettors lose money faster than their edge implies: raising stakes after losses to recover them.

The alternative approach, sizing each bet in proportion to your estimated advantage, is the Kelly criterion. It is mathematically optimal for maximising long-run growth but assumes you can estimate your edge accurately. Most people cannot, and overestimating it makes Kelly staking dramatically more volatile than flat staking. Fractional Kelly, typically a quarter or a half of what the formula suggests, is the usual compromise.

Where stake limits bite

Two limits worth knowing about:

• Table limits set the minimum and maximum stake per hand or spin. They exist partly to cap the operator’s exposure and partly to defeat doubling-up systems, which only work with an unlimited bankroll and an unlimited ceiling.
• Max bet rules apply while a bonus is active, usually capping stakes at around £5. Exceeding the cap, even once and even accidentally, voids the bonus at most operators. This is the single most common reason a cleared bonus is confiscated at withdrawal.