How the wagering calculation works
A wagering requirement tells you how many times a sum must be bet before bonus money, and anything won with it, can be withdrawn. The calculation has three parts: the amount the requirement is counted on, the multiplier, and how much your chosen game counts.
Required turnover = wagering base × multiplier. Then divide by your game's contribution: at 100% nothing changes, at 10% you need to bet ten times as much.
Why two 35x bonuses can need very different turnover
Take a £100 deposit, a £100 bonus and a 35x requirement. If the 35x is counted on the bonus only, you need to bet £3,500. If it is counted on deposit plus bonus, you need to bet £7,000: twice as much for the same headline.
The base is usually stated in the full terms rather than next to the headline, so look for words such as “bonus amount” or “deposit + bonus” before you compare offers.
Game contribution: the hidden multiplier
Casinos count games differently. Slots usually count 100%, while table games and live casino often count 10–20% or nothing at all. If blackjack counts 10%, a 35x requirement on the bonus behaves like 350x.
The casino's terms list which games count and by how much. Games that count 0% do not move your progress at all.
Turnover is not the same as what you lose
Turnover is the total of your bets, not money you lose. Much of it comes back as wins along the way. What you lose on average is the turnover multiplied by the house edge: at 96% RTP, about 4% of the turnover.
£7,000 of slot play at 96% RTP costs about £280 on average. With a £100 bonus, the betting is likely to cost more than the bonus is worth. A lower requirement changes that: £100 at 10x on the bonus means £1,000 of turnover and a typical cost of about £40.
The 10x limit in Great Britain
Since 19 January 2026, casinos licensed by the UK Gambling Commission may not set wagering requirements above 10 times the bonus (LCCP social responsibility code 5.1.1). A GB offer that asks for more breaks that rule, so check the licence and the terms before you play.
Questions about wagering requirements
How do I calculate a wagering requirement?
Multiply the amount the requirement is counted on by the multiplier. A £50 bonus at 10x on the bonus means £500 of bets. If the requirement covers deposit + bonus, add the deposit first. Then divide by your game's contribution.
What does 35x wagering mean?
You must bet 35 times the wagering base before the bonus can be withdrawn. On a £100 bonus that is £3,500; on a £100 deposit plus a £100 bonus it is £7,000.
Do free spins have wagering requirements?
Often the winnings from free spins do. Then the multiplier applies to what you win with the spins, not to the spins' value. Check the terms of the specific offer.
Is a bonus with no wagering better?
With no wagering, winnings can usually be withdrawn straight away, so there is no extra betting cost. A smaller no-wagering bonus can be worth more than a larger bonus with a high requirement.
Does the calculator use the casino's real terms?
No. It uses only the numbers you enter. Enter the figures from the current terms of the offer you are looking at; the casino's terms always decide.