Welcome to Dyzak & Sistermanns

We are pleased to be able to give you a first impression of our firm and our range of services. .

We have been working as tax consultants for private individuals, freelancers and companies of all sizes and legal forms for more than 55 years.

Since the second generation joined us more than 25 years ago, we have been offering you tax and legal advice from a single source. We are supported by a team of qualified employees who have been with us for many years.

Please make an appointment so that we can give you a personal impression - because:

Your confidence is the basis of our work.

Services

Services

  • Classic declaration services
  • Business succession/inheritance and gift tax
  • International tax law


We provide professional advisory and consultancy services both in tax questions and regarding economic targets to private persons, freelancers and companies of all sizes and legal forms. In this, we are cross-sectoral and work for all professional groups.

service tax-advice

Management Consulting is becoming more and more important for every enterprise, so it is one of the activities we focus on.

Management Consulting should not start just then when an enterprise is already in a crisis but should accompany it with an eye to the future. In our understanding, the target of Management Consulting is to avoid a crisis.

service management-consulting

Our work as lawyers is focused on economic efficiency.
Together with you, we weigh up the measures that are sensible in consideration of the costs risk. What good is it to you to win a lawsuit if the opponent is unable to pay?

service legal-advice

PROFESSIONALS

Klaus Sistermanns

Lawyer / Tax consultant

Partner i.S.d. PartGG

  • Constitutive Tax Advisory Service
  • Commercial and Company Law
  • International Tax Law
  • Contract Law

Foreign languages: englisch,niederländisch

Klaus Sistermanns

Mira Dyzak-Sistermanns

Lawyer

Partner i.S.d. PartGG

  • Family and inheritance law
  • Labor law
  • Tenancy law

Foreign languages: englisch,französisch

Mira Dyzak-Sistermanns

Susann Frenken

Tax consultant

angestellt nach § 58 StBerG

  • Preparation of annual financial statements
  • Tax consultancy
  • Inheritance and gift tax advice

Foreign languages: englisch

Susann Frenken

Brigitte Dyzak

Tax consultant

Partner i.S.d. PartGG

  • Asset Formation
  • Old Age Provision
  • Advisory Service in Succession Planning

Foreign languages: englisch,französisch

Brigitte Dyzak