The Use of XBRL for the German Business Register
Written by Bodo Kesselmeyer Posted on September 1, 2010
Dr. Bodo Kesselmeyer, CPA, is managing partner of anuboXBRL GmbH & Co. KG Munich. He has been a member of the board of XBRL Germany since 2008 and chairs the IFRS Working Group of XBRL Germany and the IFRS Working Group of XBRL Europe. The views expressed in this post are solely his own and do not necessarily reflect the opinion of any XBRL jurisdiction or any XBRL Working Group he chairs.
Whether listed or not, incorporated firms in Germany must publish their annual financial statements and consolidated financial statements. The same rule applies for partnerships that do not have at least one individual acting as general partner. Small- and medium-sized companies do not have to file the full set of information — i.e., no profit and loss statement, no disclosures, and so forth.
Sending financial reports in XBRL format to the German business register
Prior to December 31, 2006, companies filed their financial statements to local courts using paper. Courts received annual accounts, but they did not regularly send reminders to companies that did not submit annual reports. Local courts were responsible to grant physical access to this information.
In November 2006, the German parliament passed a bill about the electronic business register, about a register of cooperative associations, and about the company register (Gesetz über elektronische Handelsregister und Genossenschaftsregister sowie das Unternehmensregister — EHUG, November 10, 2006). The new law reorganized the collection and dissemination of annual financial statements effective January 1, 2007:
- Local courts are no longer responsible. Responsibility for receiving financial statements and granting access to them moved to the German business register. (In 2006, a German private publishing house became the 100% shareholder of the German business register’s provider.)
- Electronic data formats must now be used, following a transition period in which paper was allowed until December 31, 2009. Companies pay fees to the German business register for filings, based on file format: the register charges the lowest filing price if XBRL is used, and charges more to accept Word/Rich Text Format or Excel. PDF was not allowed then.
- Listed companies must now file to the business register within four months of the end of the fiscal year, not 12.
- The German business register transfers XBRL filings to HTML. Financial reports are available free for anyone online, but in HTML format only. The German business register’s website does not offer XBRL data.
In the beginning of 2007, most companies and German XBRL experts were surprised that XBRL became the reporting format for business register filings and became the cheapest format for filing. There was no voluntary XBRL filing program in place, but alternative electronic formats were accepted from the beginning.
Datev, the large software and service company for German tax consultants, began offering XBRL exports to the business register. During the first year of this program, Datev filed about 220,000 XBRL reports to the German business register. However, during that time companies faced another challenge.
Unacceptable taxonomy extensions and reduced legal flexibility in structuring financial statements
In the new system, the German business register did not allow taxonomy extensions (changes of labels included), even though German local GAAP (i.e., HGB) allows companies great flexibility to prepare financial statements that consider the aggregation and generation of reporting positions (XBRL concepts) and company-specific labels of reporting positions.
Because of this contradiction, a great number of large companies, especially those being audited, were unable to transfer their original local GAAP financial reports into an XBRL format that is accepted by the German business register.
XBRL mandatory for listed companies… but impossible to comply
Listed companies became subject to the new German law TUG (Transparenzrichtlinie-Umsetzungsgesetz, January 5, 2007), which transferred the European transparency directive into German law. With this law, XBRL became mandatory for quarterly financial reports and semiannual financial reporting of listed companies. This group of companies faced a list of challenges in 2007:
- There was neither a voluntary filing program nor a pilot filing program in place.
- German labels for the IFRS 2006 taxonomy were generated by the IASC Foundation and were of low quality. (Later, at the beginning of 2008, the new IFRS working group of XBRL Germany would suggest label changes for 80% of all labels of the face financial statements to the IASC Foundation’s 2006 IFRS XBRL Taxonomy.) Listed companies had to use these low-quality labels because the business register did not allow taxonomy extensions in 2007.
- The original IASCF IFRS 2006 General Purpose Taxonomy had to be used. This taxonomy does not contain any industry-specific reporting positions (concepts), even though German commercial law allows listed companies great flexibility in structuring face financial statements and naming reporting positions (labels). Listed companies must file quarterly and semiannual financial reports to the company register (Unternehmensregister) using the business register as vehicle, but the German business register prescribed XBRL as the only and mandatory format for this purpose in March 2007 while not allowing taxonomy extensions. Consequently, it was impossible for listed companies to transfer their traditional financial reporting to XBRL.
- XBRL had to be used not only for the face financial statements but for all quantitative disclosures and narrative disclosure (that is, XBRL block text was not allowed). At the U.S. Securities and Exchange Commission, tagging of narrative disclosures is optional. Compared with the U.S. SEC tagging requirements, the German business register initially required more detailed tagging in companies’ second year of filing.
Summing up, the process of implementing XBRL for listed companies entailed a number of major material weaknesses and mistakes in Germany. German-listed companies were unable to convert their interim reports from paper to XBRL even while being forced to do so.
Reactions and the introduction of XML-layout format for listed companies
To solve this situation, listed companies contacted their associations. Two organizations started talking with the German business registrar. The German Association of Investor Relations Officers (Deutscher Investor Relations Verband e.V — DIRK) and the German Institute of Listed Companies (Deutsches Aktieninstitut e.V.) finally reached an agreement with the Bundesanzeiger about a new XML-layout format:
- Reporting submitted in this XML-layout format received the same price reduction as XBRL. The Bundesanzeiger began accepting the new formats in September 2007.
- Business content is not structured by using this XML-layout format, however. This author holds the view that this XML-layout thus violates a regulation of the Ministry of Justice (Verordnung über das Unternehmensregister, URV, 26. January 2007, §§ 1, 10) which requires that data be structured in an electronic format like XML or a similar format. The XML-Layout format used does not provide any structure for data, but offers formatting functionality only.
German listed companies and their investor relations departments do know the term XBRL very well, but with a very negative connotation. Some consider XBRL technology as not having been ready in 2007. It is evident to everybody, even non-XBRL experts, that the XBRL introductory process as such did contain major material weaknesses and mistakes in 2007.
2nd Quarter 2008: taxonomy extensions accepted
Starting in the second quarter of 2008, the German business register accepted taxonomy extensions for both local GAAP (HGB) and IFRS. In addition, the procedures regarding disclosures with XBRL have been simplified by a rule that is very similar to the U.S. SEC’s block text rule.
German IFRS taxonomy extension missing and European harmonization challenges
One open issue is that a German extension of the IFRS taxonomy is still missing. A German extension is going to contain additional disclosures in annual reports and quarterly reports.
Listed companies filing IFRS reports are subject to German laws, too, which require additional information (compared with the IASB’s bound volume). This situation is similar in various countries in Europe, although not always the same. Legal sources for such information come from national commercial codes, national corporate governance codex, national stock corporation laws, national securities trading acts, and national accounting standards boards.
For XBRL to replace traditional reporting media like paper and PDFs, the IFRS XBRL taxonomy extension must contain elements of national law. However, to maintain the advantages of XBRL, like compatibility, national laws’ IFRS taxonomy extensions need to be harmonized.
For example: Germany may generate 300 up to 400 new concepts in the German IFRS taxonomy extension. This would equal 10,800 new concepts for the 26 member states of the EU — a several-fold increase in the number of concepts to the original IFRS taxonomy. This leads to a risk that users and investment professionals will experience extreme difficulty if they attempt to compare disclosures of listed companies in different European member states.
The IFRS working group of XBRL Europe is addressing the issue while talking to European authorities like CESR (Committee of European Securities Regulators) and EFRAG (European Financial Reporting Advisory Group). Meanwhile, modeling the German IFRS extension has been slowed for a while in order to coordinate its technical structure with European needs.
Conclusion
In short, German-listed companies actually are using the XML-layout for filing their financial reports to the business register/company register. The IFRS XBRL taxonomy is virtually unused for filing to the German business register or business register/company register.
XBRL is used by several hundred thousand companies for filing financial reports to the German business register, but these filings are provided by a few service providers, led by Datev, who file several hundred thousand XBRL reports per year.
The business register is just an intermediary, however, and does not represent the users of financial reports — banks, investors, customers, competitors, and the like. Thus, even though XBRL has arrived at the business register, until now it largely has not arrived at financial reports’ actual users, and XBRL’s ultimate benefits are yet to be fully realized.


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Wilson So is the Director of Hitachi Consulting Corporation 