Search
Contact
15.09.2020 | KPMG Law Insights

Steuerstrafrecht – Tax investigation Hamburg receives data – With letting over Airbnb urgently self announcement examine

Tax investigation Hamburg receives data – with letting over Airbnb urgently self announcement examine

I. Initial situation

Airbnb and other platforms for the (short-term) rental of (vacation) apartments have been booming for several years in connection with the triumph of the so-called sharing economy. For many private and commercial landlords, such platforms represent a convenient way to offer living space easily and cheaply on the market.

But (tax) authorities have also targeted the sector, suspecting violations of (local) use bylaws on the one hand and fearing that landlords are not declaring income in full for tax purposes on the other.

In this context, Airbnb in particular has been the target of requests for information from German authorities on several occasions in recent years.

 

II. Success for Hamburg tax investigation – international group request obliges Airbnb to disclose data

According to a press release dated September 2, 2020, the Servicetelle Steueraufsicht Hamburg, a special unit of the tax investigation department, in cooperation with the Federal Central Tax Office (BZSt), various other German states and the tax authorities of the country of domicile of the intermediary portal for the German tax administration, has achieved in proceedings lasting several years before a court in Ireland that data of landlords are transmitted for tax control purposes.

This means that the tax authorities have data on German landlords who have rented out via Airbnb. This typically includes name, addresses, and rental sales. This data is now being evaluated by the Hamburg tax investigation department. Insofar as landlords outside Hamburg are affected, the data will be forwarded at short notice to the responsible federal states for further review.

 

III. legal basis

Group requests have their legal basis in Article 26 of the double taxation treaty agreed with the respective state. The requirements for this are basically comparable with so-called collective requests for information under the German Fiscal Code (Abgabenordnung).

The competent Irish court evidently considered the requirements for a corresponding international group request to be met.

Landlords of apartments (or even individual rooms) generate income from renting and leasing. Under certain conditions, there may also be commercial income that triggers trade tax. In addition, sales tax is regularly incurred in the case of short-term accommodation of strangers.

If the corresponding income or sales have not been properly declared for tax purposes to date, there is a considerable risk that the tax authorities will assume that tax evasion is a criminal offense and will initiate corresponding investigation proceedings.

In addition to the payment of back taxes (in individual cases, it is even conceivable that undeclared rental income could be taxed up to thirteen years into the past), there is also the threat of sanctions ranging from fines to prison sentences.

 

IV. Consequences and recommendation for action

The Hamburg tax investigation office will now evaluate the data and, if necessary, also pass on data to corresponding offices in the other federal states.

As a result, individual requests for information or a comparison by the tax offices is to be expected as to whether the individual landlords have correctly declared corresponding income in the current tax returns of recent years.

There is therefore an urgent need for action for landlords who have so far provided incorrect information on income from rentals via corresponding platforms in their tax returns or have not declared this income at all. With the purchase and analysis of tax CDs from Switzerland, the tax authorities have already shown that they are able to process mass cases quickly.

The press release of the Hamburg tax investigation office can also be seen as an indication of the need for action on the part of landlords and thus as a “golden bridge” back to tax honesty. Therefore, income or sales from rentals that have not yet been declared should be reported without delay – in particular to minimize criminal law risks.

A corresponding information letter to the competent tax office should generally be designed in such a way that it also fulfills the strict formal requirements for a voluntary disclosure exempt from penalties or fines. In this respect, case law and legislators have considerably tightened the requirements in recent years, so that specialists should be involved in the preparation of the letter.

As long as the data has not been forwarded to local tax offices and, in particular, has not been reconciled with the tax returns of the individual landlord, we do not believe that a crime has yet been discovered. This would mean that a voluntary disclosure exempting from prosecution would still be possible in principle.

The longer landlords wait now, the more the risk increases that an exempting self-disclosure is blocked, e.g. due to the discovery of a crime. Even if, in individual cases, a crime is discovered, in practice a late self-disclosure leads to considerable reductions in penalties and even to the discontinuation of preliminary proceedings.

 

KPMG Law has a nationwide team of highly specialized criminal tax lawyers with extensive experience in mass cases (in particular voluntary disclosures of foreign accounts). We are happy to provide short-term support in discussing and implementing a protection strategy in a specific case.

Click here for the PDF version.

Explore #more

07.11.2025 | Deal Notifications

KPMG Law and KPMG advise Diehl Defence on the acquisition of the Tauber Group

KPMG Law Rechtsanwaltsgesellschaft mbH (KPMG Law) and KPMG AG Wirtschaftsprüfungsgesellschaft (KPMG) advised Diehl Defence on the acquisition of the Tauber Group. KPMG Law provided legal…

07.11.2025 | KPMG Law Insights

Changes to the H-1B visa and their consequences for US hiring and secondment practices

President Trump’s administration has introduced two significant changes to the highly popular H-1B visa program for skilled workers: The previous random lottery will be replaced…

07.11.2025 | In the media

KPMG Law Statement on HAUFE: Confusion surrounding the EU Deforestation Regulation – and what companies should do now

Possibly, perhaps, under certain circumstances, the EU Deforestation Regulation (EUDR) will not be binding for large and medium-sized enterprises on December 30, 2025 and for…

06.11.2025 | KPMG Law Insights

External personnel: authorities tighten checks with AI support

AI is a blessing for many companies, but it can also quickly become a curse, especially when authorities use the technology to uncover legal violations…

06.11.2025 | KPMG Law Insights

Deforestation regulation – simplification instead of postponement?

In September, the EU Commission wanted to postpone the EUDR deforestation regulation. On October 21, 2025, it published a comprehensive proposal to simplify the EUDR

05.11.2025 | KPMG Law Insights

Employer of Record now not subject to authorization after all – change of heart at BA

On October 1, 2025, the Federal Employment Agency (BA) updated its technical directives and made a U-turn with regard to the so-called employer-of-record model: In…

03.11.2025 | KPMG Law Insights

CO₂ contracts for difference: Participation in the preliminary procedure is a prerequisite for funding

Companies can apply for funding in the preliminary procedure for the climate protection contracts program until 1 December 2025. The funding from the Federal Ministry…

29.10.2025 | KPMG Law Insights

Fund Risk Limitation Act and Location Promotion Act create new scope for infrastructure funds

As the federal government’s special infrastructure fund of 500 billion euros will probably not be enough to finance Germany’s roads, networks and the energy transition,…

29.10.2025 | Deal Notifications

KPMG Law advises management board of Nürnberger Beteiligungs-AG on sale to Vienna Insurance Group

KPMG Law Rechtsanwaltsgesellschaft (KPMG Law) provided legal advice to the Management Board of Nürnberger Beteiligungs-AG throughout the entire public takeover process by Vienna Insurance Group…

29.10.2025 | KPMG Law Insights

BAG on pair comparison: How employers should deal with salary differences

The Federal Labor Court (BAG) has issued another landmark decision on equal pay. In its ruling of October 23, 2025 (Ref. 8 AZR 300/24),…

Contact

Cristian Barbieri

Manager

Friedenstraße 10
81671 München

Tel.: +49 89 5997606 1082
cbarbieri@kpmg-law.com

Sebastian Bothe

Senior Manager

Fuhlentwiete 5
20355 Hamburg

Tel.: +49 40 3609945086
sbothe@kpmg-law.com

Barnim Baron von Gemmingen

Partner
Stuttgart site manager

Theodor-Heuss-Straße 5
70174 Stuttgart

Tel.: +49 711 781923-433
bgemmingen@kpmg-law.com

Günter Graeber

Senior Manager

Friedenstraße 10
81671 München

Tel.: +49 89 15986061598
ggraeber@kpmg-law.com

Dr. Heiko Hoffmann

Partner
Munich Site Manager
Head of Criminal Tax Law

Friedenstraße 10
81671 München

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

Christian Judis

Senior Manager

Friedenstraße 10
81671 München

Tel.: +49 89 59976061028
cjudis@kpmg-law.com

Dr. Jochen Maier

Senior Manager

Heinrich-von-Stephan-Straße 23
79100 Freiburg im Breisgau

Tel.: +49 761 76999910
jmaier@kpmg-law.com

Arndt Rodatz

Partner
Head of Criminal Tax Law

Fuhlentwiete 5
20355 Hamburg

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

Philipp Schiml

Partner

Tersteegenstraße 19-23
40474 Düsseldorf

Tel.: +49 211 4155597150
pschiml@kpmg-law.com

© 2024 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