Wagering requirements are the most important number on any bonus because they determine how much you must stake, and on what, before bonus funds convert to cash. Getting this wrong is the single most common way players accept a bonus that costs more than it pays.
Throughout this guide, figures are illustrative. Actual wagering always comes from the operator and must be read in the material terms of the specific offer you are considering.
The definition in one line
Wagering is the total amount you must stake (bet) on qualifying games before a bonus, and often the winnings from it, can be withdrawn as cash.
How to calculate it
Multiply the bonus amount by the wagering multiple. Example: £50 bonus × 35x = £1,750 in qualifying stakes.
If the wagering applies to deposit plus bonus, add them first. Example: (£50 deposit + £50 bonus) × 35x = £3,500.
Game contribution changes everything
A “35x” requirement is meaningless without contribution rates. If slots contribute 100% but roulette contributes 0%, then £1,750 of roulette stakes advances your wagering by £0.
Always read the contribution table. It is part of the material terms and transforms the real cost of the offer.
The most common traps
Bonus funds are often locked until wagering completes — you cannot simply withdraw them.
Exceeding a maximum bet while wagering can void the bonus.
Using an excluded payment method (often e-wallets) may disqualify the offer entirely.
A practical rule of thumb
The higher the wagering and the lower the game contribution, the weaker the offer. Compare offers on the same terms: effective wagering after contribution weighting, cashout cap and expiry, not on the headline amount.