Paying in instalments is a convenient way to make larger purchases for many customers. It therefore comes as no surprise that online shoppers often prefer to make small, regular payments over an extended period rather than pay the entire purchase price upfront. For merchants, instalment purchases represent a particularly interesting option, as they lead to significantly higher shopping basket values than all other payment types. The option to pay in instalments can also be used as a powerful marketing instrument for limited-time promotions with flexible interest rates and payment terms.