The calculation base changes the requirement
Rollover is the amount of wagering required to meet a promotional condition. The key difference is what the multiplier applies to: only the bonus received, or the deposit and bonus combined.
With bonus-only rollover, the deposit is not included in the requirement’s calculation. With deposit-plus-bonus rollover, both amounts make up the base. As a result, the same multiplier can lead to very different wagering requirements.
A side-by-side example
Suppose you deposit $100 and receive a 100% bonus, giving you $200 in total, with a 20x rollover. If the base is the bonus alone, the calculation is 20 × $100, or $2,000 in eligible wagers. If the base is deposit plus bonus, it is 20 × $200, or $4,000—twice as much.
So the difference between deposit rollover and bonus rollover is not necessarily the advertised multiplier; it is the calculation base. An offer with a lower multiplier on deposit plus bonus can require more wagering than one with a higher multiplier applied only to the bonus.
How to compare offers
Before accepting a promotion, read the full terms and look for wording such as “bonus funds,” “deposit and bonus,” or “deposit plus bonus.” An advert may prominently show the multiplier without clearly stating its base; the base is what lets you calculate the required wagering.
Compare the total wagering requirement, not just the rollover figure. Also check which wagers count toward it and whether other conditions apply, such as a deadline or withdrawal restrictions. These may affect how useful the promotion is, even though they do not change the basic calculation.
Make the choice with the numbers in hand
A practical way to assess an offer is to multiply the base stated in its terms by the advertised rollover and compare the result with the amount you intend to wager. If the wording does not make clear whether the deposit is included, ask for clarification before opting in rather than assuming the multiplier applies only to the bonus.
Bettbit’s catalogue includes slots. When assessing a casino offer, keep that game information separate from the bonus conditions and check the promotion’s own terms to see which wagers qualify toward rollover.