A payday loan is a short-term unsecured loan, often characterized by high interest rates.

Wonga.com, also known as Wonga, was a British payday loan firm that was founded in 2006. The company focused on offering short-term, high-cost loans to customers via online applications, and began processing its first loans in 2007. The firm operated across several countries, including the United Kingdom, Spain, Poland and South Africa; it also operated in Canada until 2016, and in Germany, Switzerland, Austria and the Netherlands through the German payments business, BillPay, between 2013 and 2017.