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Wincor Nixdorf

German provider of automated banking, retail-technology hardware, software, and services.

Last updated August 26, 2026

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Overview

Wincor Nixdorf was a German business-technology company focused on the automation and digitization of banking and retail operations. Its portfolio included automated teller machines, self-service transaction systems, retail point-of-sale equipment, cash-management and branch systems, lottery and postal terminals, software, installation, maintenance, and other technology services. Rather than operating as a consumer-facing electronics brand, it primarily served banks, retailers, postal organizations, lottery operators, and other commercial institutions through equipment, software, integration, and long-term service relationships. The company emerged from the computer-business heritage established by Heinz Nixdorf. Nixdorf Computer, founded in 1952, developed computing and transaction-processing systems before being acquired by Siemens in 1990. Under Siemens, the business became Siemens Nixdorf Informationssysteme and was later refocused on retail and banking technology. In 1998, the relevant operation was renamed Siemens Nixdorf Retail and Banking Systems GmbH, reflecting its concentration on transaction systems and industry-specific solutions. On October 1, 1999, Kohlberg Kravis Roberts and Goldman Sachs acquired the business in a management-led and private-equity-backed buyout. The company adopted the Wincor Nixdorf name, combining the Wincor identity with the Nixdorf heritage. During the private-equity ownership period, its workforce expanded substantially, rising from approximately 3,400 employees to about 6,300 according to the cited company history. The business developed an international presence in automated banking and retail systems, supported by sales, manufacturing, installation, field service, and software activities. Wincor Nixdorf completed an initial public offering on May 19, 2004. Following the IPO, KKR and Goldman Sachs sold their remaining interests. The cited account reports that KKR received more than €685 million through dividends and share-sale proceeds during and after the ownership period. These figures relate to the historical ownership and exit transaction rather than the company’s current financial position. The company continued to broaden its payments and retail-technology activities. In October 2015, its cashless Payments unit was separated from the group and began operating independently under the AEVI name. In 2016, Wincor Nixdorf agreed to combine with Diebold, another major supplier of automated banking and self-service technology. The transaction was completed on August 15, 2016, creating Diebold Nixdorf as the successor international technology and services company. Wincor Nixdorf therefore no longer exists as an independent operating company, although its technologies, customer relationships, personnel, and product heritage continued within the successor organization.

History

Wincor Nixdorf’s history combined the legacy of German computing entrepreneur Heinz Nixdorf with the restructuring of Siemens’ information-technology businesses. Heinz Nixdorf founded Nixdorf Computer in 1952. The company became associated with business computing and transaction-processing equipment, fields that later provided the technical and commercial foundation for automated banking and retail systems. Siemens acquired Nixdorf Computer in 1990 and renamed the resulting organization Siemens Nixdorf Informationssysteme. During the 1990s, the company’s activities were reorganized as the broader computer market changed. The business was increasingly concentrated on specialized transaction technologies for banks and retailers rather than general-purpose computing. In 1998, the relevant operation adopted the name Siemens Nixdorf Retail and Banking Systems GmbH, signaling this strategic focus. A buyout backed by Kohlberg Kravis Roberts and Goldman Sachs was completed on October 1, 1999. The business was renamed Wincor Nixdorf, creating a new corporate identity while preserving the Nixdorf name and its reputation in transaction technology. The company sold and supported hardware, software, and services for automated banking, retail, postal, and lottery environments. Its activities covered product development, manufacturing, installation, systems integration, maintenance, and international field support. The private-equity ownership period was followed by a public offering on May 19, 2004. The IPO allowed KKR and Goldman Sachs to sell their holdings. The cited historical account states that KKR received more than €685 million through dividends and proceeds from stock sales. It also reports that Wincor Nixdorf’s employee count grew from approximately 3,400 to 6,300 during the five years in which the company was owned by the two investment firms. Wincor Nixdorf operated in a market shaped by banks’ movement toward self-service channels and retailers’ adoption of electronically controlled checkout and cash-management systems. Its equipment was generally sold as part of larger institutional deployments, with software and service contracts supporting the installed base. The company also maintained commercial relationships with other technology firms. After the end of the InterBold partnership in 1997, IBM entered into a redistribution arrangement under which it sold and serviced Wincor Nixdorf equipment in certain American markets. In October 2015, Wincor Nixdorf separated its cashless Payments unit from the group. The unit began trading independently as AEVI, reflecting a strategic distinction between the parent company’s traditional banking and retail infrastructure activities and newer payment-related services. The company’s final year as an independent entity included a major security incident involving ATMs operated by Taiwan’s First Commercial Bank. In July 2016, media reports described a malware-based theft in which more than NT$70 million was withdrawn from at least 34 machines. The affected ATMs had been manufactured by Wincor Nixdorf. Company security experts assisted the investigation, while Taiwanese authorities later announced that the criminal group had been identified and the case solved. On August 15, 2016, Wincor Nixdorf merged with Diebold. The combined company was named Diebold Nixdorf and became the successor international technology and services business. Wincor Nixdorf consequently ceased to operate as an independent company, with its products, capabilities, and market presence continuing within the merged organization.

  • 2016

    Merger with Diebold

    [1]

    The merger completed on August 15, creating Diebold Nixdorf as Wincor Nixdorf’s successor company.

  • 2015

    Cashless Payments unit becomes AEVI

    [1]

    The cashless Payments business was separated from Wincor Nixdorf and began operating independently as AEVI.

  • 2004

    Initial public offering

    [1]

    Wincor Nixdorf went public on May 19, ending the private-equity owners’ role as long-term shareholders.

  • 1999

    Wincor Nixdorf established after buyout

    [1]

    A buyout backed by KKR and Goldman Sachs closed on October 1, and the company adopted the Wincor Nixdorf name.

  • 1998

    Business refocused on retail and banking systems

    [1]

    The relevant Siemens operation was renamed Siemens Nixdorf Retail and Banking Systems GmbH as it concentrated on specialized transaction technology.

  • 1990

    Siemens acquires Nixdorf Computer

    [1]

    Siemens acquired Nixdorf Computer and renamed the business Siemens Nixdorf Informationssysteme.

  • 1952

    Nixdorf Computer founded

    [1]

    Heinz Nixdorf founded Nixdorf Computer, the corporate predecessor whose computing and transaction-technology heritage later became part of Wincor Nixdorf.

Products and positioning

B2B technology and services provider for banking, retail, postal, lottery, and other transaction-intensive industries.

  • Banking hardware

    Automated teller machines

    Wincor Nixdorf supplied ATMs and related self-service cash equipment to banks and financial institutions. The offering included the physical transaction terminal, cash-dispensing mechanisms, user interfaces, security features, and associated software and service support. These systems were deployed as part of branch, off-site, and broader self-service banking networks.

  • Banking and commercial self-service

    Self-service transaction systems

    The company developed self-service terminals for transaction-intensive environments. Such systems were designed to automate customer interactions, reduce manual processing, and connect front-end equipment with institutional software and back-office systems. Banking was the principal application, although the broader portfolio also covered commercial and public-service use cases.

  • Retail technology

    Retail point-of-sale systems

    Wincor Nixdorf provided checkout and point-of-sale equipment for retailers, together with software, integration, installation, and support services. Its retail proposition addressed transaction processing and the operational needs surrounding checkout environments, including the management of equipment and connections to retail information systems.

  • Enterprise software

    Banking and retail software

    Software formed an important complement to the company’s hardware. Wincor Nixdorf supplied applications and system software supporting automated banking, retail transactions, self-service equipment, and related operational processes. The software was typically delivered alongside equipment and professional services rather than as a mass-market standalone product.

  • Transaction terminals

    Lottery and postal terminals

    The company also supplied specialized terminals for lottery and postal environments. These systems extended its transaction-technology expertise beyond conventional banking and retail, serving organizations that needed reliable distributed terminals, transaction processing, installation, and ongoing maintenance.

Controversies

  • 2016

    Taiwan ATM malware theft

    In July 2016, at least 34 ATMs operated by Taiwan’s First Commercial Bank were used in a malware-enabled theft in which more than NT$70 million was illegally withdrawn. The machines had been manufactured by Wincor Nixdorf. The company sent security specialists to assist with the investigation. Taiwanese authorities later reported that the criminal group, involving people from Russia, Romania, and Latvia, had been identified.

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Brand decisions

  • 2016

    Merge with DieboldM&A

    Background

    Both Wincor Nixdorf and Diebold operated internationally in automated banking, self-service, and related technology and services.

    Action taken

    Wincor Nixdorf and Diebold completed their merger on August 15, 2016.

    Aftermath

    The combined organization adopted the Diebold Nixdorf name, and Wincor Nixdorf ceased to exist as an independent company.

  • 2015

    Separate the cashless Payments unitStrategy

    Background

    Wincor Nixdorf maintained activities spanning traditional banking and retail infrastructure as well as cashless payment services.

    Action taken

    The company carved out its cashless Payments unit in October 2015 and launched it as an independent business under the AEVI name.

    Aftermath

    The separation created a distinct payments business while Wincor Nixdorf continued its core banking and retail technology operations until its merger with Diebold.

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