Why your blackjack hands are barely clearing the bonus
A 35x wagering requirement on a £100 bonus means £3,500 of bets. That is the number everyone quotes. It is also only true if you play the games the operator wants you to play.
Game weighting is the rule that decides how much each £1 you stake actually counts toward the requirement, and it is where most bonus arithmetic quietly falls apart.
The usual weights
The pattern is consistent enough across operators to plan around, even though the exact figures move:
- Slots — 100%. A £1 spin counts as £1 of wagering. This is the default assumption behind every headline number.
- Roulette — often 10%, sometimes 20%, sometimes excluded.
- Blackjack — commonly 10%, and frequently excluded entirely.
- Video poker and baccarat — usually 10% or zero.
- Live dealer tables — very often excluded outright.
What that does to the maths
Same £100 bonus, same 35x requirement, £3,500 of wagering on paper.
Play slots at 100% and you need £3,500 through. Play blackjack at 10% and every £1 staked counts as 10p, so you need £35,000 of hands to clear the same bonus. On a game with a house edge under 1% that is survivable in theory and exhausting in practice — and if the terms exclude blackjack rather than weighting it, you could play £35,000 through and clear nothing at all.
This is the bit that catches out experienced table players specifically. They know blackjack has the better edge, they take the bonus assuming that edge helps them, and the weighting removes the advantage before they sit down.
The exclusion clause underneath it
Beyond weighting, most terms carry a list of games that contribute nothing. It usually includes the low-edge table games, sometimes specific high-RTP slots, and occasionally anything with a bonus-buy feature. One operator words it as certain slots not contributing to the requirement at all, listed separately from the weighting table — so reading the percentages is not enough on its own. You have to check the excluded list too.
There is also a rule most people never meet until it bites: bets placed while a bonus is active are usually capped, often around £5. Exceed it once and some operators void the bonus balance outright rather than just discounting the bet.
Reading it in the right order
- Find the wagering multiple. That is your headline number.
- Find the weighting table. Multiply the requirement by the reciprocal of your game's weight — 10% weighting means ten times the work.
- Find the excluded games list. If your game is on it, the weighting does not matter.
- Find the maximum stake while wagering. Note it before you play, not after.
Done in that order the whole thing takes a few minutes and tells you whether an offer suits how you actually play. Skipped, the headline multiple is close to meaningless for anyone who is not a slots player.
18+. Weightings and exclusions differ by operator and change without notice. Check the current terms on the operator's own page. Free, confidential help is available at BeGambleAware.