Your tax lawyer in Paris

With a senior tax lawyer, the complex paths of taxation are no longer a problem. As a firm of expert tax lawyers, we offer in-depth expertise in tax matters for individuals and businesses. Our approach aims to optimize your tax situation while ensuring compliance with current regulations, for any tax request.


Altertax law firm admitted to the Paris Bar

Altertax Avocats is a Paris-based tax law firm specializing in strategic tax advice for a variety of clients, including individuals, start-ups, SMEs and large corporations. Our expertise extends to tax structuring of M&A transactions, management of international flows, and tax auditing. We offer tailor-made tax services, backed up by extensive regulatory monitoring and comprehensive documentation.

Altertax responds to their customers’ complex tax challenges.

Why choose us as your
as a tax lawyer?

Altertax Avocats excels in taxation, focusing on international challenges and complex transactions. Our clear communication and practical advice are the fruit of a wealth of experience and a bilingual team committed to offering customized, effective solutions.

Excellence and Integrity

We don’t just do things well – we strive for excellence.

Our professional ethics are the foundation of our practice. With us, you’re assured of a high level of service, respectful of the strictest ethical standards.

Tax Lawyer at the Cutting Edge of Technology

Thanks to artificial intelligence and legaltech, we can process your tax files quickly, saving you time and ensuring efficient budget management.
Technology amplifies our expertise, offering personalized advice and optimized results at lower cost.

Responsiveness and efficiency

In the fast-paced world of finance and business, every moment counts. We value your time as much as you do. Our promise? Providing fast answers and optimal solutions. Objective? Maximize results while minimizing waste of financial resources.

Our bilingual team (French/English)

Our team, with over 25 years’ experience, is fluent in both French and English. We offer customized solutions based on an in-depth understanding of your needs, solving your tax problems with both technical and creative approaches.

Our various services as tax lawyers

Our firm excels in managing tax needs, offering dedicated expertise to both individuals and businesses. We focus on tailor-made solutions, from tax audit defense to litigation representation. Our mastery of national and international tax regulations enables us to propose customized, effective defense strategies.


Tax lawyer

As a
tax lawyers
we offer in-depth legal advice to effectively manage your tax liabilities and entitlements. Our expertise extends to all aspects of taxation, ensuring a comprehensive approach.


Tax advice

We offer
tax advice
aimed at optimizing your tax situation while complying with current regulations. Our aim is to help you navigate the complex tax landscape with confidence and clarity.


Tax audit lawyer

As a
tax auditors
our team offers expert representation to defend your interests. We intervene at every stage of the process to minimize the risks and potential impact on your financial situation.


International tax lawyer

Our expertise as
international tax lawyer
can help you meet the tax challenges of cross-border operations. We provide legal advice on navigating complex tax regulations.



Tax litigation lawyer

As a
specialized in tax litigation
we represent and defend your interests in tax disputes. Our approach is aimed at resolving disputes with the tax authorities effectively, with priority given to amicable solutions or representation before the courts.


Wealth lawyer

We offer legal expertise in wealth
wealth management as a lawyer
with an emphasis on real estate taxation. We help our customers optimize the tax impact of their real estate assets, whether for management, acquisition or transfer.

Frequently asked questions

Here are some frequently asked questions about the services of a tax lawyer.

What areas of expertise does a tax lawyer cover?

A tax lawyer specializes in a number of areas, including tax planning, tax dispute resolution, tax compliance, and tax issues related to commercial and personal transactions.

How can a tax lawyer help my company?

A tax lawyer can help your company by offering strategic advice on minimizing tax burdens, ensuring compliance with tax laws, and representing the company in disputes with tax authorities.

What's the difference between a tax lawyer and an accountant?

A tax lawyer concentrates on tax law and legal representation, while an accountant mainly handles the preparation of tax returns and bookkeeping.

Can I consult a tax lawyer for personal tax matters?

Yes, tax lawyers also provide advisory and tax planning services for individual clients, helping to manage personal and family tax issues. As is the case with AlterTax.

How much does a consultation with a tax lawyer cost?

Fees may vary depending on the complexity of the case and the lawyer’s experience. It is advisable to discuss fees during the initial consultation.

Does your Paris 17 office offer services in other arrondissements?

Although our firm is established and located in Paris 17, we provide our tax lawyer services in all the arrondissements of Paris, such as Paris 7, Paris 8, Paris 16 and others. We are dedicated to helping our customers throughout Paris, offering them tax expertise tailored to their specific needs, regardless of their location in the capital.

How does a tax lawyer assist with taxes and foreign investments?

As masters in tax law, we support companies and individuals in the management of their assets and business affairs. Our practice covers everything from tax optimization to overseas investments, ensuring compliance and preventing tax evasion. Our expertise extends to capital issues and the needs of companies in various commercial fields.

Can tax lawyers work in other regions or countries?

As tax lawyers, we can intervene with the tax authorities and the administrative courts without geographical constraints in most tax disputes. We also act for foreign administrations, whether to plead, advise or represent our clients in any city or country.

The complex paths of taxation are not a problem for us.
Gain peace of mind with experts, plan your strategy!

Your tax lawyer in France, Paris and abroad

AlterTax, based in Paris, is your trusted partner for all your French and international tax issues. Our expertise stretches from the capital to the four corners of the country and crosses borders, offering comprehensive tax assistance tailored to your needs, whether you’re based in the Paris region, Normandy, or beyond France’s borders.