The expected value of a bonus determines whether or not - in the long-term - the bonus you claim is likely to be profitable. Seasoned players, or players looking to make a profit, use EV to make winning real money more likely.
To work out the EV of a bonus, you have to use the following equation:
EV of bonus = (Total Bonus) - (House-Edge) x (Wagering Requirement)
If at the end of this equation the number is positive, it means that in the long-term you can expect to win real money. For more tips and tricks, please check out our section on How to Win Real Money: Casino Bonus Terms & Conditions Explained.