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accounting firm

tax consulting company

Wilhelm-Theodor-Römheld-Str. 14

55130 Mainz

Phone: +49 (0) 6131/921 170

Fax: +49 (0) 6131/921 173


Sales tax identification number according to § 27a UStG: DEXXXX

Managing Director:

Diplom-Kaufmann Christian Müller

CPA Tax Consultant

seat of the company

Mainz, District Court of Mainz, HRB 40324 

Legal job title and state of license

accounting firm

tax consulting company

both awarded in the Federal Republic of Germany


Chamber of Auditors

Rhineland-Palatinate Chamber of Tax Advisors

Quality control according to § 57a WPO

The company successfully participated in the quality control system of the Chamber of Auditors. The certificate is valid until XX.XX.XXXX.


Entry as statutory auditor

According to § 38 No. 2f WPO, DELTA AUDIT GmbH is entered in the professional register as a statutory auditor. 

professional regulations

The profession ofAuditorsis essentially subject to the following professional regulations:

  • Public Accountant Regulations (WPO)

  • Auditor Examination Ordinance (WiPrPrüfV) 

  • Professional charter for auditors

  • Audit Examination Credit Ordinance – WPAnrV

  • Regulation (EU) No. 537/2014 on specific requirements for the statutory audit of public-interest entities

  • Professional statutes for auditors/sworn auditors (BS WP/vBP)

  • Tax Advice Act (StBerG)

  • Quality Control Rules

  • Ordinance on the use of employees in investment advice, as sales employees, in financial portfolio management, as sales officers or as compliance officers and on the notification obligations under Section 87 of the Securities Trading Act

Information on these regulations can be found on the website of the Wirtschaftsprüferkammer

The profession oftax consultantis essentially subject to the following professional regulations:

  • Tax Advice Act (StBerG)

  • Implementing Ordinance for the Tax Advisory Act (DVStB)

  • Professional regulations (BOStB)

  • Tax Consultant Remuneration Ordinance (StBVV)

  • Specialist Advisor Regulations (FBO)

Information on these regulations can be found on the website of the Rhineland-Palatinate Chamber of Tax Advisors

Professional Liability Insurance

Zurich Participation Stock Corporation (Germany)

Unit place 2
60327 Frankfurt am Main

Territorial scope: 

Professional liability insurance for the activity as: tax consultant
Spatial scope: (AVB WSR 558)
1. Germany
2. the states of Europe, Turkey, the Russian Federation and the other states of the former Soviet Union as well as non-European sovereign territories of European states that belong to the EU or the EEA
Insured are liability claims,
(1) asserted in the courts of these countries as well as
(2) violation or failure to comply with the laws of such countries.
3. Worldwide in the amount of the statutory minimum insurance sum for liability claims from the violation or non-observance of foreign law, insofar as they arose from the commercial assistance in tax matters relating to the tax law of these states and the order is based on German law.
In these cases, the insurer's obligation to provide benefits is limited to four times the statutory minimum sum insured. If the agreed contract sum insured is less than four times the minimum sum insured, the insurer's obligation to pay in the cases mentioned is limited to the contract sum insured.
4. The insurance cover does not relate to liability claims that are asserted from activities that are carried out via branches, branch offices or other advice centers abroad.

Terms and Conditions used

General terms and conditions for auditors and auditing companies (AAB, as of January 1, 2017)

Only German law applies (No. 16 AAB). Place of jurisdiction is Mainz.

Information according to the Consumer Dispute Settlement Act

There is no obligation and no willingness to participate in a dispute settlement procedure before a consumer arbitration board.


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The Hamburg Regional Court decided per judgment dated May 12, 1998 that by including a link on ones page, one may also be accountable for the content included there. According to the district court, accepting this accountability can only be ruled out by expressly disassociating oneself from this content.

We refer to other content on the Internet on our website through links. The following applies to these links: We would like to expressly emphasize that we have no influence whatsoever on the design and content of the linked pages. We therefore hereby expressly distance ourselves from all content on all linked pages on this website. This declaration applies to all pages of from which links or banners lead to external content.

We would also like to point out that unencrypted communication by e-mail involves certain uncertainties. We therefore exclude liability for messages from unencrypted transmission. In the case of unencrypted initial transmission, we assume consent to further unencrypted electronic correspondence.

Creditsfor the images used:

1) © saiko3p -





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