The most common type of bonus that is offered in online casinos is the deposit bonus, which is sometimes referred to as match bonus. It is the opposite of the no deposit bonus. Each player’s deposit (typically there is a minimum of £20) will be rewarded by the casino as a certain percentage of the deposit. In the case of a 100% bonus, the player receives a bonus of e.g. £1 for each deposited pound (or dollar).
However, there are deposit bonuses of 200%, in which case you get two pounds for every deposited £. For example: The deposit is £100, then a 200% deposit bonus gives the player an additional £200, so that the overall balance is £300. This bonus however, is subject to bonuses conditions (e.g. wagering 10-15 times) and usually have game restrictions and are sometimes subject to maximum payouts (though that’s not always the case). High roller bonuses and bonuses for certain casino games are almost always deposit bonuses.