SumUp

What SumUp actually is

SumUp sells card acceptance to the smallest end of the market: market traders, mobile hairdressers, tradespeople, small cafes, sole traders. The recognisable product is a pocket-sized battery-powered card reader, bought outright for a low one-off price and paired to a phone. Around it sits a broader stack — point-of-sale hardware and software, invoicing, an online store, payment links, gift cards, a business account with a Mastercard debit card, and merchant cash advances.

It launched in August 2012 and is headquartered in London, with a major engineering presence in Berlin and offices from Sofia to São Paulo. Its About page describes a 3,000-strong team across 26 offices and says over four million businesses use it — a cumulative claim rather than a count of active accounts. The market count is inconsistent too: the About page says 38 markets, a 2025 press release says more than 50 countries, and SumUp does not reconcile the two.

What SumUp is not is a bank, and that distinction has consequences.

Nor is it a merchant account provider in the traditional sense — the more important structural point.

How SumUp works

SumUp is an aggregator, and everything good and bad about it follows from that.

That explains the signup experience — buy a reader, register, take payments the same week — and it explains the complaint record. Independent review sites record account terminations and frozen funds as SumUp's most common complaint category, typically triggered by an unusually large transaction or by a merchant later found to be in a prohibited category. This is a structural feature of aggregation rather than a regulatory finding against SumUp, and it applies equally to Square and Zettle. It is not a reason to avoid the model; it is a reason never to let a SumUp balance hold money you cannot do without.

Settlement runs next business day as standard, to the merchant's own bank or to a SumUp Business Account; the latter can get faster payouts — advertised at around three hours in some markets — after a qualifying period. Acceptance covers Visa, Mastercard, Maestro, American Express in selected markets, contactless and chip and PIN, Apple Pay and Google Pay, and Tap to Pay on a phone where supported. One further term deserves flagging: SumUp's terms provide for terminating accounts inactive for two years.

How SumUp prices

SumUp publishes its pricing openly on each country website: rates, subscription options and hardware prices are visible before signup. Terms differ by country, so read your own market's page rather than a comparison written for another.

The default is pay-as-you-go — buy the reader outright, pay a published flat percentage per transaction, no monthly fee, no contract — and SumUp states it does not charge for declined transactions. An optional monthly subscription, branded SumUp One or Payments Plus depending on market, buys a lower per-transaction rate, which pays for itself above a certain steady volume and costs money below it.

SumUp offers no interchange-plus option at any volume, which is the single most important pricing fact about it. A growing business will eventually pay materially more than with a provider that passes interchange through at cost, and there is no upgrade path within the product. The exit is to a different provider.

Beyond the headline sit the hardware price per device, the optional subscription, chargeback handling and currency conversion on foreign cards. Point-of-sale plans differ from the standard reader, having been sold with a 12-month commitment plus mandatory hardware. Merchant cash advances are priced as a fixed fee repaid from a share of card takings.

Where SumUp is genuinely strong

European coverage. This is SumUp's real moat and it is underrated. Its footprint across the UK, Ireland, Germany, Austria, Italy, Spain, France, the Benelux countries, Portugal, Poland, Switzerland, the Nordics and Central and Eastern Europe is far deeper than Square's, with local languages, payout rails and support. For a micro-merchant in Bulgaria or Portugal the practical choice set is much narrower than a US-centric comparison suggests, and SumUp is often in it when the American names are not.

Mobile contactless acceptance. The format SumUp defined — a cheap, pocketable, battery-powered contactless reader that just works — remains what it does best, and hardware is bought outright rather than leased, which is the correct model and not universal.

In-person point of sale. SumUp bought its way to credibility here, acquiring London POS company Goodtill in 2020 and Paris-based Tiller in 2021 alongside its own countertop devices. A small cafe gets a genuine POS, not a card reader with a menu bolted on.

Invoicing, payment links and the business account. Invoicing came from the 2019 acquisition of the Danish company Debitoor and is core to the product, not an add-on. With payment links, an online store, gift cards and a business account with a debit card, a sole trader can run most of their money in one place; SumUp reported 1.5 million active Business Account users and more than €1 billion of deposits in 2025. Published pricing rounds it out — for a segment whose alternative is often an agent with a rate sheet, that matters.

Where SumUp falls short

Most of these gaps are the price of the model. Two are avoidable failures.

The second is support. Standard phone support runs limited weekday hours, with 24/7 phone lines reserved for point-of-sale subscribers; most support is email, ticket and chat. For a merchant whose reader dies during a Saturday market, that is the difference between a bad hour and a lost day.

The rest are structural. There is no interchange-plus pricing at any volume, so growing merchants and those with large tickets progressively overpay. Cross-border capability catches people out: SumUp operates in many countries, but each merchant account is domestic to its own market, so it is not a solution for one business selling into several. Recurring and stored-card payments exist in some markets but there is no subscription-billing product. Bank transfers run through the Business Account rather than as a merchant-facing direct debit product. Fraud tooling protects SumUp's portfolio rather than giving merchants configurable rules. There is no payment-facilitator-as-a-service, no multi-acquirer routing, no crypto acceptance.

Hardware is not portable either: SumUp readers and POS bundles work only with SumUp, so switching means writing them off — trivial on a reader, real on a POS bundle bought under a 12-month commitment.

Ownership, funding and the IPO question

SumUp is private and investor-backed, with a list that leans institutional rather than venture: Goldman Sachs, Temasek, Bain Capital Credit, Oaktree Capital Management, Crestline, BBVA, American Express and Groupon. The funding history is unusually debt-heavy — $895 million of debt financing in 2021, roughly €590 million in 2022 at a reported valuation of about €8 billion, and around €1.5 billion led by Goldman Sachs in 2024, though the equity-debt split of that last round was not confirmed. Acquisitions have been steady: Berlin rival Payleven in 2016, Shoplo and Debitoor in 2019, Goodtill in 2020, and Tiller, core-banking provider Paysolut and US loyalty company Fivestars in 2021.

The direction of travel is toward becoming a small-business bank rather than a card reader vendor. The 2025 figures — 1.5 million active Business Account users, more than €1 billion of customer deposits, more than 250,000 SMEs funded through merchant cash advances — describe a lending and deposits business. The stated preparation of EU and UK banking license applications points the same way.

In April 2026 SumUp was reported to have lined up Deutsche Bank, Goldman Sachs, Jefferies and JPMorgan for a possible London listing at a valuation reported in the $10 to $15 billion range. No listing had occurred as of July 2026 and the company has not confirmed the reporting. A merchant need not care, with one exception: a company preparing to list has strong incentives around portfolio risk, and in an aggregator model portfolio risk is managed by closing accounts.

How to evaluate SumUp

SumUp is cheap and easy to try, which tempts merchants to skip evaluation. A few checks are worth the time.

1. Read the prohibited business list for your country before buying hardware. This is the most common way merchants get hurt by SumUp and it is entirely avoidable. If your category is near a line, get it in writing first.
2. Read your own country's pricing page. Rates, subscriptions and product availability differ by market, and a comparison written for another country will mislead you.
3. Work out the subscription break-even. The optional monthly plan lowers the per-transaction rate; take your real monthly volume, not your best month, and check whether it clears.
4. Model what a freeze would do to you. Holds happen, often after one unusually large transaction. If a two-week hold on your takings would stop you paying suppliers, do not run the whole business through one aggregated account.
5. Remember a Business Account balance is e-money, not a bank deposit. It is safeguarded in segregated accounts but not covered by a deposit guarantee scheme.
6. Check the commitment on anything beyond a card reader, and check support hours. POS plans have been sold with a 12-month commitment plus mandatory hardware, and 24/7 phone support reserved for POS subscribers.
7. Plan the exit before you need it. If volume grows, flat-rate pricing with no interchange-plus option will cost you real money, and the hardware does not come with you.

SumUp suits sole traders, market and mobile traders and very small businesses that take cards occasionally and cannot justify a monthly fee — particularly European micro-merchants, where its coverage is hard to match. It does not suit high-risk categories, businesses with large or growing tickets, merchants selling cross-border under one entity, or anyone who cannot survive a hold on their takings.

Capability assessment

Every company profiled on this site is assessed against the same eighteen dimensions, so the profiles can be read against one another. Each rating carries one sentence of evidence. There is no score out of ten, because a score is not defensible and a sentence is.

Core strength means a primary, differentiating capability. Supported means genuinely offered and documented, but not a differentiator. Limited means partial, geographically restricted, gated behind an enterprise tier, or delivered through a third party. Not offered means what it says. Unclear means the company markets the capability but does not document it well enough to judge — which is itself a finding.

Competitors and alternatives

SumUp — frequently asked questions

Sources

This profile was built from the following primary and secondary sources. Where sources disagreed, the disagreement is stated in the text rather than resolved silently.

• https://en.wikipedia.org/wiki/SumUp
• https://sumup.com/en-gb/about/
• https://sumup.com/en-us/fees/
• https://www.sumup.com/en-gb/press/sumup-business-account-ecosystem-growth-2025/
• https://techcrunch.com/2021/03/16/sumup-which-helps-businesses-take-card-payments-raises-895m-to-double-down-o
• https://sifted.eu/articles/sumup-potential-london-ipo
• https://thepaypers.com/payments/news/sumup-explores-ipo-that-could-value-it-at-up-to-usd-15-billion
• https://thepaypers.com/fintech/news/sumup-prepares-eu-and-uk-banking-licence-applications
• https://www.merchantmaverick.com/reviews/sumup-review/
• https://www.cardpaymentoptions.com/credit-card-processors/sumup/