Search
Contact
03.06.2019 | KPMG Law Insights

Subsequent declarations during an ongoing external audit – Important amendment to the AStBV

Subsequent declarations during an ongoing external audit – Important change to the AStBV

Tightening of the administrative instruction on the treatment of subsequent declarations during an ongoing external audit

I. Background
As soon as a taxpayer realizes before the expiry of the assessment period that a tax return submitted by him or on his behalf is incorrect, he must immediately notify the tax office and correct it (Section 153 (1) sentence 1 AO). This obligation exists irrespective of whether an external audit has already been ordered for the tax period in question or whether it has even already begun. A notification is only dispensable for the specific audit period insofar as the tax audit has already determined the error in question (AEAO to § 153 AO, No. 3 sentence 5). As part of preventive counseling, the aim is regularly to ensure that a mandatory correction report also fulfills the requirements of a self-disclosure that exempts from penalties or fines (Section 371 of the German Fiscal Code (AO)) as a precautionary measure (as a so-called self-disclosure correction). However, an exempting voluntary disclosure is no longer effectively possible for taxation periods and tax types for which an audit order has already been announced. A voluntary disclosure exempting from fines pursuant to Sec. 378 para. 3 AO is still permissible in these cases, however.

II. Previous situation of instructions of the tax authorities
The treatment of such notifications is mainly regulated within the tax authorities by the Application Decree on Section 153 of the German Fiscal Code (AO) and the Instructions for Criminal and Penalty Proceedings (Tax) (AStBV). Accordingly, voluntary disclosures (even if they are not designated as such but are at least recognizable) are and were always to be forwarded to the Office for Fines and Criminal Matters (BuStra) for examination. In addition, such declarations must also be forwarded to the BuStra where there are indications that taxes have previously been intentionally or recklessly evaded. There is no obligation to submit declarations to the BuStra if they are undoubtedly based on subsequent knowledge of the taxpayer (no. 132, para. 1 AStBV). De facto, this resulted in a very considerable scope of judgment for the assessment officer when dealing with notices of correction.

III. Change due to the AStBV 2019
Effective January 1, 2019, the current 2019 AStBV went into effect.
This massively restricts the tax offices’ scope for assessment when dealing with subsequent declarations. Specifically, the tax offices are now instructed to submit all subsequent declarations (regardless of their designation or material content) that are submitted in the course of an ongoing external audit to the BuStra for examination (No. 131 (1) sentence 2 AStBV ). In our opinion, it can be assumed that this instruction will be interpreted comprehensively by the assessment officials and that, in the case of ongoing external audits, subsequent declarations for periods not (yet) covered by this audit will also be submitted directly to the BuStra.

IV. Recommendation for action
The tightened audit procedures outlined above can prove extremely treacherous in correction and post-declaration cases. In the future, the BuStra will receive significantly more cases of supplementary declarations for review than before. This applies in particular to cases in which it is no longer possible to make an exempting voluntary disclosure due to the blocking effect caused by the external audit. It is obvious that this also increases the risk of prosecution. If the specialists in the form of the BuStra are always brought on board in correction cases on the part of the tax office, it is advisable from the company’s point of view to also involve specialized lawyers and tax consultants at an early stage, in particular also with regard to a defense under criminal tax law that may subsequently be necessary. Together with our tax experts at KPMG AG Wirtschaftsprüfungsgesellschaft, we will be happy to assist you.

Please feel free to contact us with any questions you may have on these topics.

Explore #more

23.10.2026 | KPMG Law Insights

PHP2Shell may trigger legal obligations for companies

Two critical vulnerabilities in the PHP programming language are threatening web applications and digital products worldwide. The Federal Office for Information Security (BSI) has warned…

20.10.2026 | In the media

KPMG Law Guest Column in it daily: The Business Judgment Rule and the Use of AI

The rapid advancement of artificial intelligence presents corporate leadership with diverse and far-reaching decisions. These decisions concern not only the selection and deployment of appropriate…

19.10.2026 | In the media

New articles have been published in PERSONALFÜHRUNG

The current issue of PERSONALFÜHRUNG (10–11/2026) features two articles by female experts from KPMG and KPMG Law. In the article “Will AI Save the Day?…

15.10.2026 | KPMG Law Insights

Faster Building Permits – Legal Options for Businesses

Planning and permitting procedures do not always have to delay construction projects. The law provides several options for expediting the process. To take advantage of…

09.10.2026 | KPMG Law Insights

Claims Management for Cyber Incidents: How Insurers Actively Manage Claims

Cyber incidents are among the most complex claims scenarios for insurers. Ransomware attacks, in particular, can paralyze entire IT infrastructures—with enormous financial consequences. Insurers for …

08.10.2026 | In the media

KPMG Law Guest Column in AUTOHAUS: Consumer Credit Directive: Sales Under New Circumstances

Car dealerships should use the time remaining before the new Consumer Credit Directive takes effect to systematically review their financing and sales processes for regulatory…

08.10.2026 | In the media

KPMG Law Interview with HAUFE: Even If AI Makes a Mistake, the Board of Directors Is Still Liable

AI analyzes, makes recommendations, and helps make decisions. But who bears the consequences if it’s wrong? KPMG Law experts Nikolaus Vincent Manthey and Sabrina Riesenbeck…

30.09.2026 | KPMG Law Insights

Mixed-Use Real Estate as an Opportunity for Downtown Areas

Downtown areas should be vibrant, sustainable, and attractive. But the traditional business model behind them—retail—is becoming less and less viable. Rents are high, customers are…

28.09.2026 | Deal Notifications

KPMG Law and KPMG are advising Rohde & Schwarz on the acquisitions of NEOSAT and PHYTRONIC

KPMG Law Rechtsanwaltsgesellschaft mbH (KPMG Law) and KPMG AG Wirtschaftsprüfungsgesellschaft (KPMG) advised the Munich-based technology group Rohde & Schwarz on its acquisitions of NEOSAT GmbH…

28.09.2026 | Deal Notifications

KPMG Law and KPMG are advising Diehl Defence on the acquisition of the Dr. Carls aerial imagery database

KPMG Law Rechtsanwaltsgesellschaft mbH (KPMG Law) and KPMG AG Wirtschaftsprüfungsgesellschaft (KPMG) advised Diehl Defence on its acquisition of the aerial imagery database Dr. Carls GmbH.…

Contact

Dr. Heiko Hoffmann

Partner
Munich site manager
Head of criminal tax law

Friedenstraße 10
81671 München

Tel.: +49 89 59976061652
HHoffmann@kpmg-law.com

Arndt Rodatz

Partner
Head of criminal tax law

Fuhlentwiete 5
20355 Hamburg

Tel.: +49 40 360994 5081
arodatz@kpmg-law.com

© 2026 KPMG Law Rechtsanwaltsgesellschaft mbH, associated with KPMG AG Wirtschaftsprüfungsgesellschaft, a public limited company under German law and a member of the global KPMG organisation of independent member firms affiliated with KPMG International Limited, a Private English Company Limited by Guarantee. All rights reserved. For more details on the structure of KPMG’s global organisation, please visit https://home.kpmg/governance.

KPMG International does not provide services to clients. No member firm is authorised to bind or contract KPMG International or any other member firm to any third party, just as KPMG International is not authorised to bind or contract any other member firm.

Scroll