Practical guide · Worked example
A void selection can change a multiple's potential return, but the ticket's rules must be checked before applying a generic calculation. Start with a simple decimal example to understand the arithmetic, then compare it with the operator's treatment of your actual bet.
Read the ticket type
Confirm that it is an ordinary multiple. System bets, promotions and same-game products can have different conditions. Record each accepted price and whether the stake is cash or a promotional amount.
Use an illustrative calculation
For a hypothetical cash stake of 10 units at decimal prices 2.00 and 1.50, the combined price is 3.00 and the potential total return is 30 units. If the second leg is treated as 1.00 under the applicable void rule, the revised total becomes 20 units. This is arithmetic, not a promise of settlement.
Check exceptions
Look for rules about minimum legs, boosted odds, bonuses and correlated selections. A promotion may stop applying when a leg is removed. Verify whether returned stake is included in a displayed amount before comparing totals.
Keep an audit trail
Save the original ticket and revised settlement with timestamps. Ask support to identify the rule and calculation if the result is unclear. Do not assume a discrepancy is evidence of misconduct without the underlying terms. No betting structure prevents losses; an example explaining a void should not be read as encouragement to build larger multiples.
Write each multiplication explicitly
Take a hypothetical ordinary three-leg cash multiple with a stake of 8 units and accepted decimal prices of 1.50, 2.00 and 1.25. Multiplying those prices gives 3.75, so the potential total return under the simple example is 30 units. If the applicable rules replace the 2.00 leg with 1.00, the revised combined price is 1.875 and the arithmetic total becomes 15 units before any stated rounding. Showing the factors makes the change understandable. It also makes clear that the example depends on the specific void treatment being applicable. A calculator result alone is not evidence that the operator's product follows this ordinary-multiple model.
Separate a void from a losing selection
Do not use the word void for every leg that no longer appears in the same form on screen. A losing selection, a pending selection, an abandoned event and a formally voided leg describe different states. Copy the operator's status label and the relevant rule into your worksheet. If the interface displays only a symbol, check its explanation or ask support. Substituting 1.00 for a losing selection would create an incorrect calculation. Likewise, treating a pending leg as already decided would overstate certainty. The record should show what the operator actually declared and when, rather than what you expect it to declare after the event changes.
Check whether an offer changed the product
Boosted multiples and promotional products may have conditions about the number of qualifying selections, minimum prices or eligible events. Preserve the terms that accompanied the accepted transaction and record any promotional component separately. If removing a leg means a condition is no longer met, the return may not equal a simple unboosted multiplication of the displayed headline prices. Do not reverse-engineer a promotion from an advertisement after it has changed. Ask for the ticket-specific calculation and the applicable clause. This is especially important where a displayed potential return combines cash stake, a bonus amount or a benefit that is not withdrawable cash.
Build a before-and-after table
For every leg, record the event, market, accepted odds, original status, current status and evidence link. Then add the ticket type, stake source, original potential total and revised total. Keep separate columns for total return and profit so a returned stake is not counted twice. A table with explicit unknown fields is more useful than a screenshot annotated with a guessed formula. If the business supplies a calculation, reproduce it in a separate column and note any difference from your own. Do not edit your original assumptions silently; mark which assumption changed after the explanation so the reasoning remains traceable.
Handle rounding only after the rule is known
If an ordinary calculation produces fractions of the smallest currency unit, the operator's rounding convention can matter. Keep the full intermediate product in your worksheet and apply any stated rounding at the stage described in the terms. Rounding each leg or intermediate multiplication can produce a different number from rounding only the final return. A few cents of difference therefore require a different question from a completely different combined price. First verify the leg status and promotional treatment, then examine precision. Do not use rounding as a blanket explanation for a large discrepancy that could instead indicate a different ticket type or an omitted condition.
Decide what evidence is still missing
Before sending a dispute, identify the unresolved item: the void declaration, the replacement factor, the promotion rule or the rounding convention. Ask for that item specifically and include the relevant ticket reference. This narrows the investigation and reduces the need to share unrelated account history. Save the response and any corrected receipt. If the explanation remains inconsistent with the applicable terms, follow the formal complaint route for the operator's jurisdiction. The worksheet is for checking an existing record; it does not identify favorable multiples, reduce the risk of losing future stakes or justify creating another ticket to test how the system behaves.
Related reading and sources
Continue with Betting guides and Odds and probability guide. Reference: Gambling Commission complaint guidance for Great Britain, checked 7 September 2026. The workflow above is editorial guidance; examples are hypothetical and are not reported test results.
Adults only where lawful and eligible. Global English is an editorial edition and does not authorize any operator or market. Gambling can cause financial harm; no method described here guarantees a profit.