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ABOUT US
GVSTAX is an independent tax advisory firm serving clients in Switzerland, Luxembourg, and internationally.
We provide high-level tax advice to nationally and internationally active businesses, offer concrete solutions to private individuals, and deliver discreet, end-to-end support to family offices.
Thank you!
Since our establishment, GVSTAX has focused on delivering accurate tax and accounting services grounded in technical expertise, regulatory precision, and practical understanding of our clients’ needs. Over this period, we have supported a growing number of clients in Switzerland and across multiple jurisdictions, helping them navigate complex regulatory environments with clarity and confidence.
Our development has been guided by three core principles: our clients, the quality of our deliverables, and the professional standards we uphold. The trust of our clients and their continued collaboration are the foundation of our progress.
Thank you for placing your confidence in GVSTAX — this journey would not be possible without you.
GVSTAX - Your Partner for Tax, Accounting, VAT
Ms. MEHR-COSSA, LL.M., Director and Founder at GVSTAX, is qualified Dipl. CPA, Registered Auditor with Swiss Federal Audit Oversight Authority, and Judicial Sworn Expert at the Courts of Grand Duchy of Luxembourg.
With an extensive experience in the Big Four consulting, the international private sector, and with tax authorities, Ms. MEHR-COSSA, LL.M. leads client engagements with precision and efficiency, delivering measurable results for GVSTAX’s valued clients.
Please contact Ms. MEHR-COSSA, LL.M. direclty at cossa@gvstax.ch
References, Diplomas & Professional Qualifications
Member EXPERTsuisse, der Schweizer Expertenverband für Wirtschaftsprüfung, Steuern und Treuhand.
Registered Auditor Swiss Federal Audit Oversight Authority (FOAO), Eidgenössische Revisionsaufsichtsbehörd.
Judicial Sworn Expert at the Courts of Grand Duchy of Luxembourg - fr. a prêté serment devant la chambre civile de la Cour Supérieure de Justice en date du 19 mars 2024.
What is important to us at GVSTAX
Our client relationships are founded on trust, discretion, and long-term commitment. We aim to act as a strategic partner to our clients, offering reliable, experienced, and forward-looking advice they can depend on.
Our work is guided by entrepreneurial thinking, with a clear focus on our clients’ objectives. Drawing on extensive experience across multiple industries and jurisdictions, we are well positioned to address complex tax challenges in both national and international contexts.
Our people, the experts at GVSTAX continuously monitor legal and tax developments to ensure advice that reflects current legislation and regulatory frameworks. In addition, our professionals actively contribute to the tax community as speakers and authors, regularly publishing in leading professional journals.
Why clients choose us
Trust & Confidentiality
Trust & Confidentiality
Trust & Confidentiality
We believe in building strong partnerships preserving our client's privacy, working together to navigate challenges and achieve your business goals.
Integrity
Trust & Confidentiality
Trust & Confidentiality
We operate with the highest ethical standards, ensuring your business stays fully compliant with all regulations.
Expertise
Concrete Results
Concrete Results
We combine deep industry expertise with innovative solutions to deliver precise and effective financial and tax services.
Concrete Results
Concrete Results
Concrete Results
We prioritize understanding and meeting your unique needs, providing tailored support that drives results.
Our Technology.
We leverage advanced accounting software and VAT optimisation tools
in order to streamline compliance and provide real-time financial insights for your business.
Our Methodology.
Our methodology combines cutting-edge expertise, seamless online accounting, secure web-based sharing, and the convenience of the GVS Mobile App to deliver an integrated and efficient financial management experience.
1. ERP + Taxes
2. Online Accounting
2. Online Accounting
From integrating VAT rules into your ERP systems to automating tax reporting and managing complex supply chains, our solutions provide effective and efficient management of your financial and tax operations.
2. Online Accounting
2. Online Accounting
2. Online Accounting
We provide comprehensive online accounting services that give you real-time access to your financial data, streamline bookkeeping, and simplify tax compliance—all from a secure, cloud-based platform.
3. Secure Webshare
2. Online Accounting
3. Secure Webshare
Our Secure Webshare service enables safe and easy document exchange, allowing you to share sensitive financial and tax information with us securely, ensuring data protection and confidentiality at all times.
4. GVSTAX Tech
2. Online Accounting
3. Secure Webshare
The GVSTAX tech-solutions offer you convenient, on-the-go access to your financial data, secure document sharing, and real-time updates, making tax and accounting management easier and more accessible than ever.
Memberships and Professional Associations
Our professionals are part of :
How can we help your business today?
Message us on WhatsApp
Feel free to contact us via WhatsApp Business for any questions requiring a prompt response. We remain available by email : office@gvstax.ch and by telephone at +41 767 139 700.
GVSTAX I VAT CHE-193.484.488 MWST
Chamerstrasse 172, 6300 Zug Switzerland I Direct Tel : +41 767 139 700 I Email: office@gvstax.ch I www.gvs.tax
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