// Success story / 2009

Identity Resolution at the Federal Information Technology Center (ITZBund)

This is how 5,000 tax offices search for identification numbers.

Initial situation

In 2008, every resident of the Federal Republic of Germany received a unique, lifelong identification number for taxation purposes, which replaced the conventional tax number.

§ 139b of the German Fiscal Code (AO) specifies which personal data the Federal Information Technology Center (ITZBund) processes for this purpose (surnames, first names, date of birth, main residence, etc.).

Pioneer of digital administration

Introduction of error-tolerant search

To enable tax authorities to search the database intelligently, the ITZBund relies on matchmaker from exorbyte. The data required for setting up the central database in the ITZBund were transmitted by the relevant registration authorities. At the beginning of the project, the database contained approximately 110 million entries and has since grown to 450 million entries - and the trend is still rising. Today, the technology is used in various tax procedures.

Search for identification numbers

In an elaborate selection process matchmaker convinced with all requirements. In particular, the introduction of identification numbers required sophisticated duplicate identification and exact matching. More than 5,000 tax offices throughout Germany use the central database to search for identification numbers or to make corresponding search queries. With matchmaker, the authorities have a lightning-fast, error-tolerant search across multiple fields at their disposal, which can be used to search according to a wide variety of criteria – for example, name, date of birth, location.

Smart Technology

matchmaker is a high performance matching technology, which is particularly suitable for large data volumes and high query loads. The technology is deployed on top of existing database systems, works in the back-end of these systems and offers extensive configuration options. Thus matchmaker efficiently utilizes existing hardware and software resources. The engine can be seamlessly integrated into a mainframe environment. Thus, with matchmaker, the ITZBund is excellently positioned for future challenges.

With its portfolio of services, the ITZBund covers the entire range of tasks in IT services for public administration. The aim is to create added value for customers through innovative ideas, reliable products and secure processes. The portfolio includes IT consulting, software development, hosting & operations, service desk provision and a wide range of standard products. Today, ITZBund employs approximately 3,250 people at 12 service locations. ITZBund solutions are used by well over 1 million users.

ITZBund logo


Award-winning IT services


ITZBund is one of the most innovative service providers in public administration. In 2020, the federal IT service provider once again received the eGovernment Computing Award from the IT trade journal eGovernment Computing. In the 19th eGovernment competition organized by BearingPoint and Cisco, the ITZBund placed second in the category "Best Infrastructure Project 2020"..

Other winners of the eGovernment competition

Further reference projects from the public sector and other industries


Cases & Stories

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