Please note: Until further notice, no new income tax mandates can be accepted for ongoing support. Thank you for your understanding. (As of October 2025)
I offer expert tax advice and support in the responsible handling of your tax and/or commercial law matters – reliably, individually and with many years of experience.
My clients are mainly:
- Companies of all legal forms (e.g. GmbH, GmbH & Co. KG),
- Self-employed persons and freelancers
- Private individuals
My mandates often focus on the service and/or real estate sector.
My expertise
Declaration services
✔Financial statements
✔Tax returns
✔ Accounting
(e.g. holding companies)
✘ Payroll
Tax planning advice
✔ Starting a business
✔Real estate
✘ Insolvency
✘ Criminal tax law
I am pleased to assist you with your tax matters. Please understand that I cannot cover every topic. If your inquiry does not fall within my areas of expertise (e.g., insolvency consulting) or if the involvement of a lawyer is required, I will of course inform you promptly.
Personal and uncomplicated cooperation
I run a modern, digitally organised tax firm based in Berlin. I purposely do not have traditional office space – experience has shown that face-to-face meetings are rarely necessary.
With me, you always speak directly to the tax advisor – without changing clerks or long communication channels. I offer you personal, structured and reliable cooperation – on an equal footing and with a high level of professional quality.
Postal services digital? Yes!
Have you granted me power of attorney for tax representation? If so, your tax mail will be automatically digitised at the DATEV scanning centre in Nuremberg conveniently made available to you in the MyDATEV portal once it has been processed.
The portal offers a range of communication functions for digital collaboration. For more information, download the information sheet ‘First steps in communication functions (MyDATEV) for clients’.
Up-to-date expertise
Tax advisors are part of the tax law organs and are subject to special professional regulations. This includes keeping up to date with the status and changes to tax laws and regulations, as well as having or, if necessary, acquiring significant legal knowledge relevant to the client’s mandate.
To ensure this, I have access to leading specialist databases (e.g. Beck-Online Steuerrecht Premium, DATEV Lexinform comfort, Haufe Steuer Office Excellence, Juris), including modern AI-supported research assistants. This is complemented by continuous training and professional networking with colleagues.
Information on availability
As a digital tax advisor, I can of course also be contacted by email or via the DATEV portal.
To ensure reliable and structured processing, requests with a booked consultation appointment are given priority.
Consultation in English?
Communication can be conducted in English. However, please note that tax forms issued by the tax authorities and documents intended for publication in the Federal Gazette, for example, are only available in German. Knowledge of German (reading ability) is therefore a prerequisite for accepting a mandate.
Marcus Kather, M. A.
Steuerberater