SumUp is a payments company built for the merchants traditional providers never bothered with. Founded in 2012 and headquartered in London, it sells low-cost card readers and point-of-sale hardware to small businesses — market traders, cafés, hairdressers, tradespeople — who could never justify the monthly fees, multi-year contracts, and cumbersome terminals that legacy processors demanded. The core proposition has barely changed since launch: buy a card reader outright for a modest one-off price, pay a small percentage per transaction, and sign nothing.
That model has scaled a long way past its origins. SumUp now serves more than 4 million merchants across roughly 35 markets, employs around 4,000 people, and was valued at about €8 billion in a 2022 round led by Bain Capital. In 2024 it raised a €1.5 billion private credit facility led by Goldman Sachs, and it has been weighing a stock market listing that could value it as high as $15 billion.
The more significant shift is that SumUp is no longer a card reader company. Through a run of acquisitions — Payleven, the e-commerce platform Shoplo, the core banking provider Paysolut, POS software firm Tiller, and the US loyalty startup Fivestars — it has assembled a full financial stack for micro-businesses: a business account and card, invoicing, an online store, loyalty tools, self-service kiosks, and SDKs for developers who want to embed card acceptance in their own products. The ambition is to be the only software a small merchant needs to run their business.
That leaves SumUp in an unusual competitive position. On hardware and in-person payments it faces Square, Zettle, and Dojo; as a broader business platform it edges toward Stripe, Mollie, and Revolut Business. Its defensibility rests on the segment most of the industry finds too small to serve properly — the micro and nano merchants that make up the long tail of European commerce.