Tax
Tax questions answered clearly and practically.
From tax returns to VAT, rulings and transfer pricing — we support you personally, with focus on what matters for your company.
Services
What we handle in tax for you.
Five concrete service areas — from ongoing filings and tax planning through to VAT, rulings and international topics.
Tax returns
Clean, on-time filings for companies and shareholders — including coordination on assessments and authority follow-ups.
- Corporate & shareholder tax
- Assessments & queries
- Deadlines & authorities
Tax advisory
Strategic tax planning and operational advice — from salary vs. dividend and structure questions through to restructurings, before decisions get expensive.
- Tax planning & optimisation
- Restructurings
- Authority representation
VAT advisory
Correct registration, filings and clarity on complex or industry-specific VAT topics — including processes that work day to day.
- Registration & filings
- Special cases & industry topics
- Process & compliance
Tax ruling
Legal certainty in advance — we prepare rulings, handle the dialogue with authorities and stay with you through to a binding answer.
- Preparation & argumentation
- Submission
- Authority coordination
Transfer pricing
Cross-border transfer pricing documented and set up practically — clear for you and robust towards authorities.
- Documentation & analysis
- Intra-group structures
- International setups
Your contact
Talk to Dominique directly.
Dominique Hättenschwiler is Partner and tax expert at Z83. For tax questions, he is your first point of contact — personal, clear, and without detours.
Dominique Hättenschwiler
Partner & Tax Expert
Certified tax expert / Swiss fiduciary diploma
How we work
How we get started.
- 01
Free initial consultation
You book directly with Dominique. Together we clarify the situation, urgency and a sensible next step.
- 02
Clear scope
You get an honest view of effort, timing and what is actually needed — no forced packages.
- 03
Execution
Whether filings, advisory, rulings or transfer pricing: we deliver and remain your contact.
Who it's for
For companies that don’t want to treat tax as an afterthought.
Especially digital startups and SMEs — from annual filings to international and formal topics where expertise makes the difference. Tax advisory is particularly worthwhile when growth, restructuring, ownership changes or an international setup are on the agenda — or when salary-vs-dividend questions, loss carryforwards, VAT special cases and authority queries shouldn’t be handled on the side. Clear advice helps you use legal room for manoeuvre, avoid costly mistakes and stay on top of changing rules — so you can keep your focus on the business.
Expert Insights
Current takes on tax topics that matter to founders and SMEs.
Frequently asked questions
Before you ask.
Because tax is more than filing forms: the right advice helps you use legal room for manoeuvre, avoid costly mistakes and stay on top of changing rules. It also takes the admin load off your plate — you save time, reduce stress and can focus on the business. In short: less risk, clearer structure, more peace of mind.
Whenever decisions may have tax consequences — for example growth, restructuring, ownership changes, an international setup, salary-vs-dividend questions, or when loss carryforwards, VAT special cases or authority queries come up. Before larger investments or a ruling, an early review also pays off.
It depends on scope and complexity. A straightforward tax return or ongoing support is priced differently from international optimisation, restructurings or transfer pricing. Depending on the assignment, we work on an hourly basis or with a clear fixed fee. The more complex the setup — for example holdings, cross-border topics or authority queries — the higher the effort. In the free initial consultation we clarify together what makes sense and what it will cost.
Dominique Hättenschwiler — Partner and certified tax expert. He remains your contact and involves other specialists from the team when needed.