Single bet
At decimal odds d and stake s:
- Gross return = s x d
- Profit = s x (d - 1)
A 15-unit stake at 2.20 gives 15 x 2.20 = 33 units gross return and 33 - 15 = 18 units profit.
For fractional a/b, profit is s x a / b. A 12-unit stake at 7/4 gives 12 x 7 / 4 = 21 units profit and 12 + 21 = 33 units gross return.
Accumulator
Multiply the decimal prices, then apply the stake. Three legs at 1.60, 1.80 and 2.10 give combined odds of 1.60 x 1.80 x 2.10 = 6.048. A 10-unit stake returns 10 x 6.048 = 60.48 units, so profit is 60.48 - 10 = 50.48 units.
Void leg
Operator rules determine how a void leg is handled. DraftKings' market rules provide one operator example in which affected multiple bets are recalculated under the stated rules; another operator's wording can differ, and any operator can change its rules. If the 1.80 leg above is treated as odds of 1.00, the revised price is 1.60 x 1.00 x 2.10 = 3.36 and the 10-unit gross return is 10 x 3.36 = 33.60 units.
Quick table
| Stake | Decimal odds | Gross return | Profit |
|---|---|---|---|
| 5 | 1.50 | 7.50 | 2.50 |
| 10 | 2.00 | 20.00 | 10.00 |
| 20 | 2.75 | 55.00 | 35.00 |
| 25 | 4.00 | 100.00 | 75.00 |
Cases that need the market rules
Each-way bets split the total stake into win and place parts. Dead heats can reduce the settled stake. Cash-out receipts replace the original potential return with the accepted offer. Asian handicap and quarter-line bets can split settlement. These cases should be calculated from the receipt and current rules, not from the headline odds alone.
Verification checklist
- Confirm whether the displayed figure is stake, profit or gross return.
- Use the accepted price, not a later screen price.
- Check every leg's status and settlement rule.
- Keep full precision until the final currency rounding.
Reconcile the complete settlement path
The displayed potential return is only one stage of a receipt. A reliable reconciliation records the accepted stake, each accepted price, the final status of every leg, any rule-based adjustment and the amount credited. For a 30-unit single at 1.85, a full win gives 30 x 1.85 = 55.50 units gross return and 25.50 units profit. A void gives 30 units back and zero profit. A loss gives zero return and a 30-unit loss.
For a multiple, replace each void leg with decimal 1.00, then multiply the remaining active prices. A 10-unit treble at 1.80 x 2.00 x 2.50 has combined odds of 9.00 and potential gross return of 90 units. If the 2.00 leg is void, the revised price is 1.80 x 1.00 x 2.50 = 4.50 and gross return becomes 45 units.
Final checks
- Do not subtract the stake twice when moving from gross return to profit.
- Use the accepted price, not a later market quote.
- Separate cash credited from profit when a refund is included.
- Check split stakes, commission and deductions before comparing the result with the original display.
- Keep a line-by-line record so another reader can reproduce the amount.
Related resources
Use the conversion guide when the receipt uses another format, or accumulator odds for probability and dependence.
Continue learning
- Next guide: How to Calculate Bookmaker Overround
- Related guide: How to Calculate Implied Probability from Betting Odds
Assumptions and limitations
Examples use unit stakes and ordinary fixed odds. They exclude taxes, exchange commission, deductions, each-way place terms and promotional conditions. Personal tax treatment depends on jurisdiction and circumstances and is outside this calculation guide.
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