Bonus calculator and house edge
Two honest tools: what a bonus costs you once wagering is counted, and how much each game keeps on average.
Blackjack basic strategy chart
Check any starting hand against the dealer's card, with the full chart for both soft 17 rules.
Roulette odds calculator
Odds, payouts and house edge for every bet on European, French and American wheels.
Bonus calculator
What a deposit bonus really costs before you can withdraw it.
On average the wagering costs more than the bonus is worth: an expected £40 short. The house edge on £3,500 of bets eats it.
Know the house edge
The casino's average cut per bet, under standard rules. Lower is better for you.
| Game | Edge |
|---|---|
| Blackjack (3:2, basic strategy) Main bet · Typical six-deck rules; depends on the table rules | 0.50% |
| Video poker, Jacks or Better 9/6 Perfect play | 0.46% |
| Baccarat Banker | 1.06% |
| Baccarat Player | 1.24% |
| French roulette (La Partage) Even-money bets | 1.35% |
| Craps Pass line | 1.41% |
| Blackjack (6:5 payout) Main bet · Paying 6:5 instead of 3:2 adds about 1.4 points | 1.90% |
| European roulette Any bet | 2.70% |
| Online slots Typical published RTP 94 to 97% · Shown at the midpoint; check the game's own RTP | 4.50% |
| American roulette Most bets | 5.26% |
| Baccarat Tie (pays 8:1) | 14.36% |
What is the house edge?
The house edge is the average share of every bet that the casino keeps over the long run. On European roulette it is 2.70%: across many spins, a player loses on average 2.70 of every 100 staked. It says nothing about a single session, where luck dominates.
How do RTP and house edge relate?
Return to player (RTP) is the mirror image of the house edge. A slot with an RTP of 96% has a house edge of 4%. Game providers publish the RTP, often in the game's help screen, and some games come in several RTP versions.
How do wagering requirements work?
A wagering requirement says how many times you must bet a bonus before you can withdraw it. A £100 bonus with 35x wagering means £3,500 in bets. Your expected loss is roughly the total wagered times the house edge: at 4% that is £140, more than the bonus itself.
Are wagering requirements capped?
It depends on the market. In Great Britain the Gambling Commission capped wagering requirements at 10 times the bonus from 19 January 2026. Elsewhere the rules differ by regulator, so always read the terms of the operator and check that it is licensed where you live.
House edge figures assume standard rules; for blackjack and video poker they assume perfect strategy. The calculator gives averages, not predictions.