Read the base before the multiple
A 35× rule on a £20 bonus means £700 of qualifying wagers. If the same rule covers a £20 deposit and £20 bonus, it means £1,400 instead. The multiple is incomplete until the base is clear.
At 50% game contribution, only half of eligible turnover counts towards the requirement. With £700 left to qualify, the example needs £1,400 in eligible turnover. A game contributing 0% cannot reduce a positive remaining requirement.
Turnover is not a forecast of losses
Turnover is the sum of eligible stakes, not the deposit you should make. A balance may fund more than one round while it lasts, and it may run out before a requirement is complete. This calculator does not estimate completion chances.
The illustrative round count assumes a fixed stake and sufficient funds, rounded up to a whole round. Check eligible games, maximum bonus stake, expiry, balance-use rules, conversion conditions and withdrawal caps separately. A zero multiplier in this calculation does not remove those other rules.