Quinttax – Tax consultancy with an international focus

— About us

Your team for tax complexity – from structuring to filing

International tax issues rarely arise in isolation: substance, double taxation agreements, withholding tax, reporting obligations, financing, as well as corporate and contractual structuring are interdependent – and must be considered together. Added to this are national structuring issues and ongoing tax returns, which we also handle in full. Because even the best structure needs to be implemented properly in day-to-day operations.

We support you from concept to implementation: robust structures, risks identified at an early stage and solutions that stand up to scrutiny from authorities or banks. We handle complex audit procedures by the tax authorities – whether tax audits, appeal proceedings or matters relevant to criminal tax law – either entirely or by providing targeted support alongside your existing adviser. Particularly in the case of cross-border or especially complex issues, we often work behind the scenes without replacing existing relationships.

For complex structures, only qualified professionals are involved – no clerks, no trainees. You work with qualified specialists who truly understand your situation. And who ultimately take full responsibility: as registered tax advisers with professional liability insurance, subject to professional regulations and bearing genuine responsibility for what we recommend.

Structures that we develop are also implemented – contractually, fiscally, and substantively. No concept on paper that doesn't hold up at the first contact with the authorities. Anyone who merely explains how structures might work in theory takes no responsibility for reality. We do.

Our approach: structured working, robust documentation and a realistic roadmap – with clear communication at every step of the way.

Arrange an initial consultation ↗

★ Our solutions

Solutions that hold up

International Tax Law

Structuring international shareholdings, transactions and relocation

We support you in the planning, structuring and implementation of cross-border projects – at both the corporate and private wealth levels.

Establishment and optimisation of foreign shareholdings and international group structures
Tax classification of cross-border cash flows (dividends, interest, royalties) in accordance with relevant double taxation agreements / withholding tax
Avoidance and classification of permanent establishment risks as well as issues relating to management
Structural and risk assessments for international set-ups (including documentation / compliance)
Relocation from Germany: planning and support, including exit taxation (timeline, avoidance measures, documentation)
Coordination with foreign advisers to ensure a consistent overall approach

Result: A legally sound structure, a workable plan and robust documentation.

Arrange an initial consultation ↗

Asset Protection / Wealth Management

Organising assets in a legally compliant manner, limiting risks, preparing for succession

For us, asset protection does not mean "hiding" assets, but rather a legally sound structure: clear ownership and control relationships, governance, transparency and tax compliance.

Restructuring of assets for risk segregation (operational / assets)
Establishment and optimisation of holding and asset structures
Family and succession planning: rules, roles, decision-making and distribution structures
International components depending on the objective, e.g. Liechtenstein foundations or family office structures in Switzerland
Coordination of tax classification in Germany, including tax returns and transparency and reporting obligations
Cross-border asset transfers

Important: We handle mandates as a team exclusively with qualified professionals; for international components, we collaborate with competent local partners and personally accompany you abroad.

Arrange an initial consultation ↗

Tax Advice / Ongoing Support & Restructuring

Tax returns, advice and structure maintenance from a single source

In addition to project-related international matters, we handle ongoing tax support – reliably, on time and with an eye to structuring options.

Ongoing tax returns (all legal forms)
Advisory support for day-to-day decisions (financing, distributions, shareholdings)
Restructuring such as holding companies and shareholding reorganisation
Communication with tax authorities, audit preparation and support with queries
Tax support for corporate transactions (purchase, sale, conversion): structuring, due diligence and post-transaction support
Digital client management and document processing: structured, DATEV-compatible processes for efficient collaboration – with clear responsibilities, deadlines and transparency

Objective: To fulfil tax obligations correctly and ensure structures remain sustainable in the long term.

Arrange an initial consultation ↗

★ How we work

How we work with you:

1. Initial consultation & vision:

We clarify your concerns, the framework conditions, the timetable and priorities – thereby creating a structured foundation for our future collaboration.

2. Analysis:

We review documents, identify tax and legal risks, and present you with specific options for action along with their respective consequences.

3. Concept & roadmap:

We develop the target structure and a concrete implementation plan – clearly tailored to your objectives, resources and the agreed timetable.

4. Implementation & validation:

We coordinate implementation with partners (domestic and international), ensure documentation is in order and support tax returns and compliance.

Quality principle: We handle mandates as a team – exclusively through qualified professionals and, in international cases, with tried-and-tested international partners.

✦ Frequently Asked Questions – FAQ

Your questions, clearly answered

What you should know before your first meeting. Open and straightforward – that's how we work.

For entrepreneurs, families and high-net-worth individuals, particularly those with an international focus. Typical areas include national and international structuring, relocating from Germany, holding structures, foreign shareholdings, foundation solutions and succession planning.

Yes. Upon request, we provide ongoing support, prepare the necessary ongoing filings and submit all relevant tax returns, particularly where international matters require ongoing reporting.

On a flat-fee basis. Before we begin, we clarify the scope of your mandate and agree on a fixed price in writing. No hourly rates, no surprises at the end of the month, no opaque fee invoices based on decimal rates that you, as a client, can hardly make sense of. In the tax consultancy sector, this remains the exception to this day – but for us, it is standard practice. Only services not agreed in advance are charged separately, e.g. if the scope of the work expands significantly during the collaboration.

Yes. Where there is an international element, we coordinate with competent local partners to ensure the solution is implemented correctly in the relevant country. On-site support is a matter of course for us – whether in Switzerland, Liechtenstein, Cyprus or even Dubai.

Yes. We regularly review existing structures or specific issues as a second opinion – for example, in the case of planned transactions, restructurings or relocation scenarios. This is carried out as a clearly defined project mandate with a fixed flat-rate fee.

As early as possible, as the timeline and preparation are crucial for your room for manoeuvre.

Tax consultancy with international focus for entrepreneurial families, high-net-worth individuals and Family Offices

Your team for tax complexity – from structuring to filing

Solutions that hold up

International Tax Law

Asset Protection / Wealth Management

Tax Advice / Ongoing Support & Restructuring

How we work with you:

Your questions, clearly answered

Discreet solutions for complex tax and wealth management issues