What this tool does
A casino bonus looks generous until the wagering requirement gets involved. This calculator turns your deposit, the match percentage, the wagering multiplier, and the game contribution rate into one plain number. It shows how much you must bet before a withdrawal becomes possible. It runs in your browser. Nothing you enter is stored. Nothing is sent anywhere.
Once the numbers are in, the tool adds an automated read on the offer. It checks the wagering multiplier and the contribution rate against the ranges NZ players typically see, weighs them against each other, and labels the bonus Good, Average, or Poor with a short note on what is driving that call. The label updates live as you move the sliders, so you can test a few offers side by side before picking one.
Reading the result
Total to wager is the deposit plus the bonus amount, multiplied by the wagering requirement. That is the turnover you need before the casino unlocks a cashout, and it is usually the single biggest driver of whether a bonus is worth claiming at all. A small headline percentage with a low multiplier can beat a huge headline percentage locked behind a steep one. A lower multiplier and a higher game contribution both shrink that number. A higher multiplier or a low contribution rate on your preferred games stretches it out.
Game contribution matters too. Pokies count in full at most casinos. Table games rarely do.
Typical contribution rates
| Game type | Typical contribution |
|---|---|
| Pokies / slots | 100% |
| Scratch cards | 50% |
| Table games (blackjack, roulette) | 10% |
| Live dealer games | 10% |
Always check the operator's own bonus terms. Contribution rates vary by casino and by game.
