Our Cross-Border Model
Why Your Cross-Border Tax Case Should Stay With One Adviser
The most difficult questions in an international tax case often arise not within one tax system, but where two or more tax systems interact.
At TaxRep, one primary adviser therefore manages the overall cross-border case, personally assesses the interaction between German, Swiss and U.S. tax rules and the relevant tax treaties, and can continue to represent the client before the relevant tax authorities.
The Real Cross-Border Problem
Two technically correct tax returns can still produce a poor overall result
A German return and a foreign tax return may each be technically correct when considered separately. Problems can still arise if the underlying tax positions were developed independently.
Tax residency, income sourcing, withholding taxes, treaty provisions, foreign tax credits, business interests, retirement arrangements and the timing of transactions may affect more than one jurisdiction at the same time.
The cross-border position should therefore first be understood as one overall tax case before the individual filings are prepared.
Which country treats the individual as resident, and how does the applicable treaty affect that result?
Which jurisdiction has the right to tax the income, and how is the same income treated in the other country?
Is relief provided through exemption, a foreign tax credit, withholding tax relief or another mechanism?
What happens if an assessment or adjustment in one country changes the tax position in another?
Two Different Advisory Models
Coordinating country advisers or maintaining one substantive view of the entire case?
International tax advice can be organized in different ways. A traditional network or referral model may work well, but it creates additional substantive interfaces between separate country specialists.
Multiple countries – multiple substantive advisers
- Each adviser primarily analyzes the tax law of one jurisdiction
- Treaty and interaction issues must be coordinated between advisers
- Information is passed between specialists and interpreted again
- Tax positions may be developed sequentially rather than together
- Tax authority questions often require the local adviser to re-enter the process
- Changes in one country have to be coordinated again with the others
Multiple countries – one substantive cross-border view
- One primary adviser understands the overall facts and tax position
- The same adviser personally assesses the relevant tax systems and treaty rules
- Connected tax positions are developed together
- Information and documents are collected for the overall case
- Filings and deadlines are managed as one connected process
- The same adviser can continue the case before the relevant tax authorities
More Than One Point of Contact
A single contact person does not by itself solve the substantive problem
Larger firms, international networks and referral arrangements can also provide a central point of contact.
But if that person merely manages communication between a German adviser and a foreign adviser, the substantive interface still exists between several different professionals.
At TaxRep, “one adviser” means more than communication management. The primary adviser personally analyzes how the relevant tax systems interact and develops the resulting cross-border tax position.
One Continuous Process
From the initial consultation through the final follow-up step
One Intake
Residence, income, assets, business interests, workdays and prior filings are collected once for the overall case.
Cross-Border Analysis
Domestic rules, treaty provisions, income sourcing, withholding taxes and foreign tax credits are analyzed together.
Filing and Deadlines
The required returns, disclosures, supporting documentation and filing deadlines are coordinated as one process.
Follow-Up and Representation
Assessments, foreign tax credits, authority questions, supplemental filings and required amendments remain part of the same case.
Personal Tax Authority Representation
The same adviser can remain involved after the returns are filed
The practical difference between a coordinated multi-adviser model and a personally managed cross-border case often becomes most visible after the filings have been submitted.
A German tax office may request additional evidence. The IRS or a Swiss cantonal tax authority may question the same underlying facts under a different set of rules. A later foreign tax assessment may also be required before a foreign tax credit can be finalized.
Because the adviser who developed the original cross-border position already understands those connections, the same adviser can continue the matter personally when later tax authority questions arise.
Germany in a Cross-Border Context
Particularly relevant for Germany–Switzerland and Germany–United States cases
The benefits of an integrated substantive approach become particularly clear when German tax law directly interacts with another tax system.
Germany–Switzerland
Tax residency, dual residence, cross-border commuting, remote work, workdays, withholding taxes, real estate, ownership interests and retirement arrangements can create simultaneous German and Swiss tax consequences.
The key question is frequently not the German or Swiss rule in isolation, but how both systems interact under the Germany–Switzerland tax treaty.
Germany–Switzerland ServicesGermany–United States
U.S. citizens living in Germany, Green Card holders, U.S. investments, LLCs, corporations, PFICs, retirement accounts and international U.S. reporting obligations connect two very different tax systems.
German tax treatment, U.S. tax compliance, treaty provisions, foreign tax credits, FBAR and other reporting obligations should therefore be considered together from the beginning.
Germany–United States ServicesWhy Fewer Hand-Offs Matter
Less information loss. More consistent tax positions. Greater continuity.
The facts do not have to be repeatedly explained and passed between separate country advisers.
Tax positions are developed with all relevant jurisdictions in mind rather than reconciled only after separate analyses.
Assessments and tax authority questions remain connected to the original cross-border analysis.
The primary adviser remains involved from the initial analysis through later follow-up matters.
Personal Professional Responsibility
Multiple professional qualifications for cross-border tax matters
The TaxRep model concentrates substantive responsibility for international tax matters personally rather than only organizationally.
This makes it possible to assess German, Swiss and U.S. tax issues and their cross-border interaction within one continuous professional view of the overall case.
Contact
One adviser for your entire cross-border tax case.
In the initial consultation, we review your situation across the relevant tax systems and identify the connected tax positions, treaty issues, filing obligations, deadlines and potential follow-up steps.