You receive an amount of bonus credits equivalent to a percentage of your deposit.
For example, if you claim a 100% bonus up to R1,500, you receive R1,500 worth of bonus credits when you deposit R1,500. If you deposit R2,000, you still receive R1,500 as that is the specified max amount.
Match bonuses are offered as Welcome offers and promotions, and when they are offered as monthly or weekly campaigns they are often referred to as Reload bonuses.