An odds boost changes the quoted price. A profit boost adds a stated percentage to eligible profit under its terms. The percentage base matters: profit excludes the original cash stake, while total return includes it. Similar labels can therefore produce different calculations.
Start from the unboosted cash calculation
For a successful cash bet, total return equals stake multiplied by decimal odds. Profit equals that return minus the stake. Calculate these separately before applying a boost. A losing wager normally has no winning profit to boost.
A token can have different stake treatment. Do not use a cash formula for a promotional token without checking whether the original token value is returned. Boosts may also exclude tokens entirely.
Worked example: a percentage applied to profit
Hypothetical cash bet: £4 at decimal odds of 3.00. A win returns £12, including £8 profit. A 25% profit boost adds £2, producing a £14 total return. Applying 25% to the full £12 would wrongly produce £15.
A separate odds boost from 3.00 to 3.50 would also produce £14 on a winning £4 cash bet. This numerical match only holds for these inputs. It does not make every 25% profit boost equivalent to a 0.50 increase in decimal odds.
| Calculation | Amount |
|---|---|
| Original return: £4 x 3.00 | £12 |
| Original profit: £12 - £4 | £8 |
| Extra profit: £8 x 25% | £2 |
| Boosted total return | £14 |
Caps and eligible stakes can change the result
Read whether the cap limits the cash stake, the additional boost, the total payout or benefits across a period. If only part of a stake is eligible, the formula may not apply to the whole wager. An accumulator may require a minimum price on every leg.
William Hill Football Acca Boost provides a concrete example of a benefit calculated on winnings less the original stake. Its qualifying markets and limits belong to that promotion; they are not a default rule for every boosted price.
Source notes: 1.
Compare the final accepted price and conditions
The word boosted describes a change from an operator reference price, not proof that the resulting quote is the highest available or a fair assessment of probability. Check the bet receipt and any boost confirmation. An advertised increase does not make a losing selection less able to lose.
If a leg is void, read how the base odds, number of qualifying selections and boost tier are recalculated. Record the revised calculation rather than simply applying the original percentage to a changed bet.
Common questions
Does a 100% profit boost double the total return?
Not for an ordinary cash bet. It doubles eligible profit; the original stake is then added once, subject to the promotion rules.
Can I combine a boost with another offer?
Only where both sets of terms allow it. Availability in the betslip does not establish that the wager will also qualify for a welcome or weekly reward.
Sources and editorial notes
Official source material consulted for this edition. Operator examples are dated illustrations, not a guarantee of current terms or personal eligibility. Worked examples are hypothetical.
Published by eLand, Lda. See our editorial policy. Report a correction.