Prevent & eliminate
double taxation.
Germany & Switzerland.
If Germany and Switzerland tax the same profit, double taxation follows. We coordinate across Germany and Switzerland without handover between adviser teams.
Focus: tax audits, cross-border adjustments and double taxation defence with a Germany–Switzerland nexus. No general tax services.
Double taxation arises when two states claim the same profit but there is no coordinated position. We align tax law and procedures in Germany and Switzerland under one lead.
What we do
We take mandates where double taxation is imminent or already present. A common trigger is a German tax audit adjustment that requires a corresponding correction in Switzerland.
- Transfer pricing adjustment involving a Swiss group entity
- Permanent establishment or profit allocation dispute
- Estimated assessments or hidden profit distributions with cross-border effects
- Parallel proceedings or inconsistent qualification
How we work
As lawyers and advisers we design the procedural strategy across interfaces: facts, qualification under German and Swiss law and the defence or correction line are built as one coherent structure for both states.
Cross-border under one lead. Argumentation, procedure and implementation are aligned across Germany and Switzerland – without handover between adviser teams.
Tax law, procedural law and international qualification converge in one team. No handover between specialists – one line, jointly led.
Ongoing authorship on tax audits, mutual agreement procedures and cross-border profit allocation. The line we run for you is the line we also write about.
Why oi.tax
Cross-border matters often fail where German and Swiss law are not coordinated in one consistent approach.
Cross-border cases are typically split across different adviser teams. Multiple responsibilities create handover risk and inconsistent positions.
In cross-border proceedings, the line must not get lost between responsible parties. You receive one coordinated lead across both states.
One lead contact.
Germany & Switzerland.
Is my case a fit?
- A cross-border tax audit is upcoming or already ongoing
- Profit adjustment in Germany with effects in Switzerland
- Profit adjustment in Switzerland with effects in Germany
- Transfer pricing or PE is qualified differently
- A corresponding correction between DE and CH is foreseeable
- Purely domestic matters without cross-border nexus
- Cases without Germany or Switzerland nexus
- General tax services without audit context
- Pure documentation without dispute relevance
Contact
oi.tax is the entry point for cross-border matters. We intake requests in Zurich, classify the matter and involve Hamburg if German proceedings are affected.
International qualification and tax adjustments. Transfer pricing, corresponding corrections, Germany–Switzerland coordination and mutual agreement procedures.
German proceedings support. Tax audits, objections and tax court litigation, procedural and enforcement topics.
*To handle your message with the professional confidentiality required, a window will open where you can send us an encrypted message. You can attach files. After sending, you will receive a confirmation and have the option to download your message.
By contacting us you consent to the internal transfer of your information to that of our offices to which your enquiry is professionally assigned.