instant payments

Adyen

Pieter van der Does and Arnout Schuijff had already built and sold one payments company when they sat down in 2006 to start again. The result was Adyen — the name literally means "start over" in Surinamese — and the premise was simple: instead of stitching together the same fragmented payment infrastructure everyone else was using, they would build the whole thing themselves from scratch. That decision, made in an Amsterdam office nearly two decades ago, is still the reason Adyen is different. Most payment companies are assemblers — they buy a gateway here, a processor there, bolt them together and hope for the best. Adyen owns its own technology stack end to end, which means a merchant integrating once gets access to card processing, local payment methods, point-of-sale terminals, and real-time settlement data through a single platform. No middle layers, no reconciliation headaches, no finger-pointing between vendors when something breaks. The client list tells you everything about where Adyen sits in the market. McDonald's, Spotify, Microsoft, LVMH, H&M — these are companies with serious payment volumes and zero appetite for systems that don't work. Adyen became the default choice for enterprises that had outgrown the limitations of traditional payment stacks and needed something that could handle global scale without buckling. Since going public on Euronext Amsterdam in 2018, Adyen has grown into one of Europe's most valuable technology companies, with around 4,300 employees across 23 countries and net revenue of just under €2 billion in 2024. It remains headquartered in Amsterdam and consistently profitable — a combination that's rarer in fintech than it should be. For businesses that treat payments as infrastructure rather than an afterthought, Adyen is the benchmark everything else gets measured against.

Founded 2006

Mollie

Adriaan Mol built Mollie's first backend while living with his parents in the Netherlands in 2004. No investors, no office, no team — just a founder and an idea that small businesses deserved a payment integration that didn't require a team of lawyers and a six-month setup process. He bootstrapped it for over fifteen years before taking outside funding in 2019. By then, Mollie had already grown into one of the most important payment platforms in European e-commerce, entirely on the back of a product that developers actually liked using. The proposition is straightforward: one API, one dashboard, and access to the payment methods that actually matter across Europe. That means iDEAL in the Netherlands, Bancontact in Belgium, Klarna and SEPA Direct Debit everywhere, alongside cards, Apple Pay, and a growing list of local methods that would otherwise require separate integrations and separate acquirer relationships. Mollie handles the compliance, the fraud monitoring, and the settlement complexity. Merchants get a clean interface and a single invoice. For the 250,000 businesses using Mollie today — ranging from Gymshark and Wild to local bakeries and market stalls, as CEO Koen Köppen regularly points out — the appeal is less about feature lists and more about what they don't have to think about. European payments are fragmented by design. Every country has its preferred methods, its own regulatory quirks, its own consumer habits. Mollie's job is to make that invisible. The numbers from 2024 reflect a company that has found its model. Revenue reached €214 million, up 28% year on year, with gross profit growing 30% to €115 million and the company returning to positive EBITDA for the first time since 2018. Mollie raised a total of $940 million in funding and was valued at $6.5 billion following its 2021 Series C led by Blackstone. The most significant recent development is the acquisition of GoCardless in December 2025 — bringing the UK-based direct debit specialist into the Mollie group and substantially expanding its recurring payments and bank transfer capabilities across Europe. Combined, the two companies cover a considerable share of European e-commerce payment infrastructure. Mollie is still headquartered in Amsterdam, with around 900 employees across offices in Ghent, London, Lisbon, Munich, Milan, Paris, and beyond.

Founded 2004

Checkout.com

Checkout.com is a global payments infrastructure company that builds the plumbing beneath the surface of e-commerce. While most payment processors still operate like legacy banking rails, Checkout.com has constructed a single API that connects directly to card networks, acquiring banks, and alternative payment methods—eliminating the middlemen that slow everything down. The platform processes payments in over 150 currencies across 195 countries, handling everything from straightforward card transactions to complex multi-currency settlements for merchants operating at scale. What sets it apart in Europe and beyond is its refusal to be a typical payment gateway: instead of asking merchants to adapt to the network, Checkout.com adapts the network to the merchant. Founded in 2012 by Guillermo Gutiérrez García-Ceballos, the company has grown from a London-based startup into a critical piece of infrastructure for enterprises, fintechs, and marketplaces that need orchestration at the transaction level. It competes with traditional acquirers and modern payment platforms by combining the reliability of legacy banking with the speed and flexibility developers expect. In the fragmented European payments landscape, Checkout.com has become indispensable for companies that refuse to compromise on latency, coverage, or control. The company represents a fundamental shift in how payments should work: less about choosing between payment methods and more about making payments invisible.

Founded 2012

Tpay

Polish online payment processing has multiple credible operators competing for similar market segments, and the differentiators between them often come down to operational reliability, merchant service quality, and integration depth with the specific platforms that Polish e-commerce builders use. Tpay was founded in 2010 to compete in that market, building a payment gateway and processing platform serving Polish online merchants across the full range of payment methods their customers expect — instant bank transfers, BLIK, cards, deferred payment options. The company has built a substantial merchant base across Polish e-commerce, with particular strength in segments where its operational reliability and customer service have built durable merchant relationships. Tpay operates in a market where the established players date back to the late 1990s and early 2000s, requiring newer entrants to compete on dimensions where their operational architecture and product approach can offer genuine advantages over the legacy infrastructure that defines older platforms. The maturation of Polish e-commerce through the 2010s and 2020s has continued to expand the addressable market faster than the established operators have absorbed it, leaving room for platforms like Tpay to build sustainable positions even as the overall sector consolidates.

Founded 2010

Divilo

Divilo is building the infrastructure for European businesses to manage their international payroll at scale. Rather than juggling multiple vendors across different countries—payroll processors here, compliance specialists there, currency brokers elsewhere—Divilo consolidates the entire stack into one operating system. The platform handles everything from local employment law compliance to multi-currency payments, tax filing, and benefits administration across the continent. For HR teams and CFOs wrestling with the complexity of expanding internationally, it's a rare case of genuine consolidation rather than another bolted-on layer. The European payroll market remains fragmented by design—local rules, tax codes, and banking infrastructure mean there's no true continental standard. Divilo is attacking this head-on with a unified API and dashboard that speaks to both the technical and operational reality of cross-border employment. It's the kind of infrastructure play that sounds boring until you realize how much operational friction it removes for companies thinking beyond their home market.

Founded 2021

Swan

Swan is reshaping how European businesses handle payments by offering a modern, developer-friendly infrastructure layer that sits between companies and the complexity of traditional banking rails. Rather than forcing startups and established firms to navigate fragmented payment ecosystems, Swan bundles together payment processing, banking APIs, and compliance tooling into a single, coherent platform. The company targets mid-market and enterprise customers—think e-commerce platforms, SaaS businesses, and financial services—who need to embed payments into their core operations without hiring a dedicated payments team. Swan's core strength lies in its ability to strip away legacy banking friction: it handles card processing, instant payments, payouts, and cross-border transfers through a unified API, while managing the regulatory headaches that usually consume engineering bandwidth. In a European landscape crowded with payment gateways and banking APIs, Swan distinguishes itself through developer experience and architectural clarity. Where competitors often bolt together disparate services, Swan presents a genuinely integrated stack—one codebase, one dashboard, one billing model. The company serves as both a payments operator and a bridge to traditional banking, making it particularly valuable for businesses scaling beyond their first million transactions. Swan represents a broader maturation in European fintech infrastructure: the shift from "we'll process your payments" to "we'll become your payments backbone," enabling a generation of companies to focus on their core product rather than payment plumbing.

Founded 2019

Przelewy24

Polish online merchants have specific payment requirements driven by the dominance of bank-based payment methods over cards in Polish e-commerce, and Przelewy24 has built two decades of operational depth around serving that market. Founded in 2004, the platform provides payment processing for online merchants across Poland with particular strength in instant bank transfer methods, the BLIK integration, and the broader range of payment options that Polish consumers actually use rather than the card-focused payment methods that international platforms prioritise. The company is part of the Nets Group following acquisition, giving it the resources of one of Northern Europe's largest payment technology groups while maintaining the local operational depth that defines its position in the Polish market. Przelewy24 serves a substantial share of Polish e-commerce merchants — from independent online retailers to major Polish enterprise brands — providing the integrated payment processing that handles the diversity of Polish payment methods across a single merchant integration. In the Polish payments landscape, the question of which platform handles the largest share of online payment volume has been contested between several domestic specialists, with Przelewy24 consistently ranking among the leading operators by volume and merchant count.

Founded 2004

TrueLayer

TrueLayer is a payments and open banking infrastructure platform that lets fintech companies, payment processors, and traditional banks access real-time financial data and initiate payments directly from consumer bank accounts across Europe. Rather than building APIs from scratch or waiting months for bank integrations, developers plug into TrueLayer's unified network and immediately get access to payment initiation, account aggregation, and transaction data from thousands of financial institutions. The company operates as a critical middleware layer in European fintech. While most payment infrastructure still relies on cards or legacy rails, TrueLayer routes transactions through bank-grade open banking rails, making transfers faster, cheaper, and less friction-heavy. Its API-first approach means a startup launching in five countries gets the same clean integration experience as an enterprise player. In the competitive open banking space, TrueLayer stands out through breadth of coverage and developer experience. The platform supports payments in 17+ European countries and has built integrations with hundreds of banks—not through partnerships alone, but through technical depth in handling regional quirks and regulatory complexity. Its customer base spans neobanks like Wise and Revolut, major payment processors, and traditional banks replatforming their operations. TrueLayer essentially democratized access to Europe's banking infrastructure at a moment when open banking regulations made that access possible but still technically demanding. For any fintech building on the continent, it's become a foundational piece of modern payment architecture.

Founded 2016

Paysera

Paysera is a Lithuanian fintech company that has quietly built one of Europe's most comprehensive payment and banking platforms, serving millions of users across the continent. Rather than chasing hype, Paysera focuses on practical utility—combining payment processing, digital accounts, currency exchange, and invoicing tools into a single interface that works across borders and languages. The platform powers everything from freelancers managing invoices to SMEs handling payroll, while also offering consumer-facing services like multi-currency wallets and competitive exchange rates. What sets Paysera apart is its unglamorous pragmatism: it solves real friction in how Europeans move, spend, and manage money across different countries, without the startup theatrics. It's the kind of company that doesn't dominate headlines but has become indispensable infrastructure for a significant portion of the continent's digital economy. In the crowded European fintech landscape, where newer players chase consumer attention and legacy banks chase compliance, Paysera operates in the profitable middle—trusted by businesses and individuals who value reliability and cross-border simplicity over brand prestige.

Founded 2004

Wero

Wero is a pan-European digital wallet built on the back of instant payments infrastructure, letting you send money across borders as easily as you'd split a coffee with a friend. The service is backed by major European banks and payment networks, so it carries the weight of established financial institutions without the friction they're usually known for. It positions itself as a genuinely European alternative to the US-dominated payment apps—no geopolitical complications, just European banking rails doing what they should have been doing all along. The app focuses on person-to-person transfers, merchant payments, and basic wallet functionality, all tied to your existing bank account rather than a proprietary balance. What sets Wero apart is its foundation in real-time payments infrastructure and bank partnerships, giving it legitimacy and reach that pure fintech startups struggle to achieve. It's not trying to be a challenger bank or investment platform—it's building something narrower but potentially deeper: a payment layer that feels native to Europe rather than imported from Silicon Valley. As European instant payment networks mature and regulations push toward open banking, Wero represents the infrastructure play that could become quietly essential.

Founded 2021

Fintecture

Fintecture is building the plumbing that makes open banking actually work for merchants and platforms across Europe. Rather than forcing businesses to cobble together fragmented payment APIs and banking connectors, Fintecture consolidates access to bank accounts and payment rails across the continent into a single integration point. The company's core offering is elegantly straightforward: a unified API that lets merchants initiate payments directly from customer bank accounts without managing dozens of individual bank connections. This sits somewhere between traditional payment gateways and the messy reality of banking infrastructure—it handles the complexity of navigating different banking standards, regulatory environments, and technical protocols across European markets so businesses don't have to. What sets Fintecture apart is its focus on the merchant experience rather than the bank experience. While most open banking platforms were built to satisfy regulators, Fintecture designed its product assuming developers actually want to use it. The company operates across 30+ European countries and integrates with over 4,000 banks, which means a single merchant can reach customers wherever they bank without building country-by-country integrations. In a landscape crowded with both traditional payment processors and newer open banking specialists, Fintecture occupies a distinct middle ground—not replacing card networks, but offering an alternative rails that's cheaper for merchants, more transparent for customers, and increasingly difficult for incumbents to ignore.

Founded 2017

Nexi

Nexi is Italy's largest payment services operator, controlling the infrastructure that moves money across the country's retail and corporate sectors. Founded in 2013 through a merger of two major Italian payment processors, it manages card transactions, merchant acquiring, and digital payment rails for banks, retailers, and businesses across Europe. The company operates across the full payments stack—from traditional POS terminals and card networks to modern API-based solutions and instant payment systems. Unlike most fintech startups, Nexi doesn't target consumers directly. Instead, it powers the payment backbone for Italian and European financial institutions and retailers, processing tens of billions in transactions annually. Its business model sits at the intersection of traditional payment infrastructure and modern open banking, positioning it as a critical node in Europe's shift toward real-time payments and embedded finance. Nexi's role is unglamorous but essential: it's the plumbing that makes modern commerce work, handling everything from contactless cards to mobile wallets to cross-border transfers. In the broader European fintech landscape, it represents the "boring" but profitable core—the infrastructure layer that fintechs themselves depend on to function.

Founded 2013