To take advantage of a 400% bonus, you will first need to find a casino that offers one. This can be difficult as there are not many that offer a match bonus or any rewards that are as generous as this. But they do exist, and once you’ve done some searching online, you should be able to locate one. You can either do this using a search engine or a website like ours. But be aware that most of these bonuses will come with special conditions such as minimum deposit amounts and a specific length of time within which you have to use the bonus. The terms and conditions will depend on the casino you are using, so make sure to read them thoroughly before you sign up.