+49 331 76 99 100
Monday to Friday, 9am to 5pm CET. You reach the practice directly, not a queue. Please dial the international format if you are calling from outside Germany.
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Potsdam
Throughout Germany · Barcelona · Dubai
Contact
Three ways to reach us: call, request a callback, or write. A rough outline of your situation is enough to start — the detail comes in the conversation. We advise in English throughout, including correspondence with the tax office.
Request a callback
Leave your number and a preferred time — we come back to you on the next working day within the window you choose. Requests submitted in the evening or at the weekend are processed too.
To the form →+49 171 348 18 12
For first contact and scheduling. Please do not send documents or details of your tax affairs — we provide an encrypted channel for that once you are a client.
Send a message →Request a callback
Free of charge and without obligation. We come back to you on the next working day within the window you choose.
What we start with
- Which years are affected and whether assessments have already been issued.
- Which exchanges and wallets you have used, including dormant ones.
- A rough estimate of how many transactions there are in total.
- Whether the tax office has written to you, and by when you must reply.
The clearer these four points are beforehand, the more reliable the effort estimate you receive before engaging us.
If you are not resident in Germany
Tell us where you are resident and since when, and whether you still hold a home or habitual abode in Germany. Residence, not citizenship, decides whether German tax applies — and it decides which of your years we need to look at.
Practice
Where to find us
The practice is located in the Golm science park in Potsdam, just outside Berlin. Clients are advised throughout Germany and digitally — a visit in person is possible but rarely necessary.
This link opens a third-party map service. No map is embedded on this page, so that merely opening it sends no data there.
- Practice
- Matthias Steger Consulting Steuerberatungsgesellschaft mbH
- Address
- Dennis-Gabor-Straße 2
14469 Potsdam, Germany - Phone
- +49 331 76 99 100
- +49 171 348 18 12 – first contact and scheduling
- Hours
- Monday to Friday, 9am to 5pm CET
- Coverage
- Potsdam, Berlin and throughout Germany
- Abroad
- Own offices in Barcelona and Dubai
- Languages
- English and German
For fellow advisers and the press
Enquiries about technical support, second opinions, expert reports, in-house seminars or interviews are answered promptly. On pending proceedings we discuss the legal questions, not the clients.
BackgroundProceedings, hearing and teaching
FeesFee schedule 2026
OverviewCrypto tax advice in Germany
Please note: No tax advice is given by telephone, WhatsApp or through this form. For exchanges within an engagement we provide an encrypted channel; the duty of confidentiality under section 57 of the German Tax Advisory Act applies.
This English page mirrors the German contact page.
This English page mirrors the German contact page.