SumUp enables 3m small businesses to process payments in-store and online. It offers card readers, as well as online payment links, an invoices app, and QR codes. The London-based company was founded in 2012 by a team including chief executive Daniel Klein. In 2021, it raised €750m in debt financing from investors including Goldman Sachs, Temasek and Bain Capital, to fund acquisitions, overseas expansion, and product development. Later that year, SumUp bought Fivestars, a US payments and marketing firm, for $317m.