Game contribution is the share of an eligible stake that counts towards a bonus wagering requirement. A contribution rate of 20% means an AU$10 stake adds AU$2 to qualifying turnover. It does not mean a 20% chance of winning.
Calculate the credited amount
Multiply the stake by the contribution rate as a decimal. The examples below use hypothetical rates; they are not rules for the casinos in our directory.
| Eligible stake | Contribution rate | Added to qualifying turnover |
|---|---|---|
| AU$10 | 100% | AU$10 |
| AU$10 | 20% | AU$2 |
| AU$10 | 10% | AU$1 |
| AU$10 | 0% | AU$0 |
A lower contribution rate means more stakes would be needed to reach the same turnover figure. It does not reduce the amount at risk on each bet. The entire stake can still be lost.
When you use games with different rates
Calculate each group of eligible stakes separately, then add the credited amounts. Suppose a hypothetical requirement starts at AU$400:
| Play recorded | Calculation | Credited turnover |
|---|---|---|
| AU$100 staked at 100% | 100 × 1 | AU$100 |
| AU$50 staked at 20% | 50 × 0.20 | AU$10 |
| Total | 100 + 10 | AU$110 |
That leaves AU$290 of qualifying turnover. The AU$150 already staked is not the credited amount, and the result of those bets does not change this example’s calculation. An operator’s rules determine when stakes count, including settlement and any excluded play.
Our wagering calculator assumes one contribution rate for the whole calculation. It does not track mixed-game history. Use the separate calculations above when reading a record containing different rates.
Check the exact offer and game
Find the contribution table attached to the offer you accepted. Check the exact game title, any version or mode exclusions, and whether the rule applies to bonus funds, cash funds or both. A broad label such as “slots” should not replace an explicit list of exclusions.
A game with 0% contribution adds no qualifying turnover. Check separately whether it is permitted while the bonus is active: a zero rate and a prohibition are different instructions. If the wording is unclear, ask support before using that game.
Paddy Power’s game-weighting explanation demonstrates that an operator may credit only a percentage of a stake. It is an example of the mechanism, not a contribution table for the brands reviewed here. Checked 17 September 2026.
Contribution rate and RTP answer different questions
Contribution determines progress towards an offer requirement. RTP describes a game’s theoretical return over a large amount of play. Neither percentage tells you what you will receive from your next stake. Do not substitute an RTP figure into the contribution field of the calculator.
If your progress counter looks wrong
Compare the counter with your settled transaction history. Note the offer, game, stake, time and expected credited amount. Ask support which contribution rule was applied and whether any transactions are awaiting settlement. Avoid placing extra bets merely to test the counter.
For the original calculation base and multiplier, read wagering requirements explained. For payment figures rather than bonus rules, use the casino review directory or $10 deposit comparison.
Read RTP explained for theoretical return and bonus maximum bets for stake ceilings.