Calculate how much you still need to wager to clear a betting rollover (wagering requirement) from your deposit, bonus and rollover multiplier.
Bet Rollover Formula and Method
Required credited wagering = selected base × multiplier
Read the offer’s requirement base and multiplier, then enter the amount of wagering already credited toward that requirement. A base of deposit plus bonus differs from bonus alone. Credit is the amount counted by the provider after its contribution rules, not necessarily the raw amount previously staked.
Minimum Odds and Expected Cost
A minimum-odds condition decides whether a wager is eligible; it does not change the rollover multiplier. For example, decimal odds of 1.15 describe a total return of 1.15 per unit staked if the bet wins, including the original stake. Check the offer’s minimum odds and contribution rules before treating any stake as eligible.
Quoted odds alone cannot predict the cost of clearing a rollover. The reciprocal 1 / 1.15 is about 86.96%, a break-even win probability, not a measured chance of winning. If s is the stake, o is decimal odds and p is an independently estimated true win probability, expected net return is s × (p × o − 1). Substituting p = 1 / o always produces zero by construction. It does not establish zero risk or zero expected loss.
The result here remains a translation of the stated wagering requirement. It does not promise a way to win, predict bonus profit or establish withdrawal eligibility. A “no-rollover” description should be checked against the full offer terms.
How to Use This Calculator
Select the result and any applicable method before entering the visible values. Check the selected record, unit and scoring conventions before calculating. Review the primary result and its breakdown, then open the calculation steps to see how the inputs were used.
Worked Example
With the example inputs in the table, the result is 1,200. Credited wagering means the amount already counted toward the requirement.
Remaining eligible turnover = max(0, required − credited) / contribution fraction
Input and Example Guide
| Input or category | Example or weight | Entry guidance |
|---|---|---|
| Deposit amount | 100 | Use the stated unit; retain available precision. |
| Bonus amount | 50 | Use the stated unit; retain available precision. |
| Rollover applies to | Deposit plus bonus | Choose the convention that applies to your record. |
| Rollover requirement (× times) | 10 | Use the stated unit; retain available precision. |
| Already wagered toward it (optional) | 300 | Use the stated unit; retain available precision. |
| Contribution rate (%) (optional) | 100 | Use the stated unit; retain available precision. |
Interpreting the Result
The remaining credited amount is divided by the eligible contribution fraction to find remaining eligible turnover. For example, a fifty-percent contribution requires twice the raw stake amount for each unit of credit. This does not estimate expected losses, remaining time, eligible games or withdrawal entitlement.
This translates stated offer terms; it does not estimate cost or profit. Game eligibility, excluded stakes, maximum bets, deadlines, netting and withdrawal rules are separate conditions.
Assumptions and Common Input Errors
Credited wagering means the amount already counted toward the requirement. Keep the same currency and settlement conditions throughout a scenario. Displayed currency amounts are rounded to two decimals; calculations retain precision unless cent allocation is explicitly described.
Saving and Revising a Scenario
A successful calculation is saved in this browser and can be restored on the next visit. Editing an input marks the old result as a previous result so it is not mistaken for an updated calculation. Reset clears the inputs and the saved result.
Sources
Betfair Help, Decimal Odds and Stake-Inclusive Returns, reviewed 2026. Arithmetic and scenario assumptions are specified above.
