CSU Digital is a Brazilian financial technology company whose shares trade on B3 under the ticker CSUD3. Founded in 1992 by Marcos Ribeiro Leite under the name CardSystem Ltda., it began operating as the first independent processor and manager of electronic payment methods in Brazil, at a time when the card market was still nascent. From the outset, it was structured to primarily serve small and mid-sized commercial banks, offering card issuing and processing in a landscape dominated by a few major players. In 1993, it incorporated the full-service card concept into its business model, starting to cover the entire operational cycle from transaction processing to customer service, which consolidated its position as a technology partner for financial institutions and other card issuers.

Throughout the 1990s, the company expanded its operations and corporate structure. In 1996, it became the first company in the country to operate simultaneously with the three main international card brands (Visa, Mastercard, and American Express), which strengthened its relevance within the payments ecosystem. In 1997, CardSystem became a corporation (sociedade anônima) with the entry of private equity investors, began issuing private label cards, and acquired UPSI Informática Ltda., changing its name to CSU CardSystem S.A. In the 2000s, it identified opportunities related to performance and engagement of its clients’ card bases, which led to the creation of new business units focused on relationship marketing, loyalty, and customer service. In 2006, it went public on the former Bovespa (now B3) under the ticker CARD3, later changed to CSUD3, becoming the first company in its segment to list shares on the Novo Mercado, the segment with the highest corporate governance requirements.

CSU Digital’s business model has evolved into an integrated technology platform for payments, financial services, and customer experience. The company organizes its activities into two major segments: CSU Pays and CSU DX. CSU Pays concentrates solutions for managing payment operations and associated services, while CSU DX is dedicated to customer experience, service, and process hyperautomation solutions. In 2024, CSU Pays accounted for approximately 65% of annual net revenue, consolidating itself as the company’s core business, while CSU DX represented about 35% of revenue. CSU operates in a B2B model, providing technology and operational infrastructure to banks, fintechs, card issuers, acquirers, and companies in other sectors that wish to offer financial services or relationship programs to their end consumers.

In the CSU Pays segment, the company offers a full-service digital payments infrastructure, covering processing of credit, debit, and prepaid cards—physical, digital, and virtual—as well as digital wallets, Pix payments, installment Pix, and solutions involving cryptocurrencies. On behalf of its clients, the company manages the entire operational cycle: transaction authorization, billing, credit cycle management, collections, card issuance and delivery, fraud prevention, relationships with card schemes, accounting, back office, invoice management, card activation, among other activities. CSU developed the proprietary Wide Platform architecture, which incorporates process intelligence accumulated over decades of operation, and more recently the Magnus core, which is 100% cloud-based, combining the robustness of high-platform processing with the flexibility and scalability of a cloud environment. This combination underpins the offering of SaaS solutions for payments and loyalty, adaptable to different client profiles and transaction volumes.

CSU Pays also encompasses Embedded Finance ecosystems and loyalty and incentive programs. In Embedded Finance, the company provides a full banking core, accessible via APIs or white-label apps, that enables opening digital accounts for individuals and businesses, receiving and transferring funds electronically, bill payment, mobile top-ups, issuance and settlement of boletos, and operation of digital cards, among other services. This infrastructure allows companies in different sectors to embed financial services into their own customer, supplier, and employee journeys. In loyalty and incentives, CSU Digital provides the technological and operational infrastructure for points programs, cashback, rewards catalogs, discounts at partner merchants, and incentive campaigns tied to sales performance or internal engagement, often with gamification elements. These programs complement the payment solutions, serving as tools to activate, monetize, and retain users of cards and digital accounts.

The CSU DX segment is focused on customer experience and process management through digital technologies and hyperautomation. The unit offers digital customer service via apps, chatbots, and other non-voice channels, phone-based service supported by proprietary technology solutions, and operations in customer care (SAC), telesales, collections, engagement, and back office. By combining technology and specialized teams, CSU DX operates across clients’ front, middle, and back offices, integrating channels and systems to support customer relationship, monetization, and collections on an ongoing basis. The HAS hyperautomation platform, based on artificial intelligence, machine learning, and workflow automation, is applied to use cases such as fraud prevention, interchange, document and data curation, onboarding, credit pipelines, and quality monitoring, enabling operational efficiency gains and creating cross-sell opportunities with CSU Pays solutions.

In terms of its market, CSU Digital operates in critical links of the Brazilian financial system and payments value chain. As a processor, it is positioned at the technological core that connects card issuers, card schemes, acquirers, and merchants, operating in a sector characterized by strong interconnection and high reliability and security requirements. The expansion of the ecosystem of digital banks, fintechs, and digital wallets has broadened the addressable market for its solutions, especially in digital payments and Embedded Finance. In addition to its focus on financial institutions, the company serves firms in other industries that want to build loyalty programs, proprietary marketplaces, incentive solutions, or embedded financial services. Revenue is significantly concentrated among a few key clients: four clients together account for a meaningful share of net revenue, spread across the CSU Pays and CSU DX segments.

CSU Digital’s geographic presence is predominantly Brazilian, with headquarters in Barueri (SP) and operations focused on the domestic financial services and customer service market. The company has nonetheless begun an internationalization process by opening an office in Miami, United States, through its subsidiary CSU International LLC. This structure allows it to support clients with operations based in Brazil that are undergoing geographic expansion, replicating abroad part of the technology and service infrastructure it already offers in the Brazilian market. The international operation broadens its scope in payments and digital services without changing the company’s primary focus on its established client base in Brazil.

From a regulatory standpoint, CSU Digital is classified as a payment institution that issues postpaid payment instruments and electronic money, and it is subject to the Central Bank of Brazil’s regulatory framework for the payments segment. The need for formal authorization to operate depends on reaching certain transaction volumes and balances in payment accounts, as set out in Central Bank resolutions. In August 2024, after reaching R$ 300 million in payment transactions over a twelve-month period, the company began the process of obtaining a license from the regulator, in line with BCB Resolutions No. 80 and 81 of 2021. The company also relies on the protection and management of intellectual property assets, maintaining dozens of trademarks registered with the INPI, including the “CSU” brand, and a portfolio of proprietary software recognized as intangible assets, combined with third-party solutions in a hybrid technology model.

In the environmental, social, and governance fields, CSU Digital has developed initiatives that predate the recent consolidation of the ESG agenda. In 2003, it created Instituto CSU, a non-profit organization responsible for the group’s social projects, focused on training and inclusion of young people, women, retirees, and people with disabilities in the job market, having served tens of thousands of people since its inception. On the environmental front, although its activities are not subject to specific regulation, the company maintains a Sustainability Program to raise employee awareness about recycling, with selective collection of solid waste at its units and delivery to specialized companies. Its listing on B3’s Novo Mercado reinforces formal governance commitments, such as capital composed exclusively of common shares, greater transparency, and corporate practices aligned with more stringent standards in the Brazilian capital markets.