Tax law firm in Marseille
Anticipating a tax risk, securing a decision, responding to the tax authorities, defending a case: Yaël Sion & ASSOCIATES law firm supports you with a clear, rigorous and solution-oriented approach.
The expertise of
a specialised firm
Avocate at the Marseille Bar, Maître Yaël SION founded Yaël Sion & ASSOCIATES law firm in 2015. The firm mainly advises and represents clients in tax and customs law (advice, tax audits, disputes), and also supports companies in financial distress, as well as matters relating to business law and administrative law.
Our priority: help you clearly understand your situation, define a realistic strategy, and secure every step (communications with the authorities, negotiation, proceedings, deadlines, supporting documents).
Practice areas
Tax lawyer Marseille
Tax & customs
law
Advice and defence in corporate and executive taxation. Tax audits, adjustment notices, reassessments, penalties, VAT, and customs issues linked to business activity.
Goal: secure your decisions and protect your interests.
Companies
in financial distress
Prevention and management of difficulties: support for directors, negotiations with creditors and collective proceedings. Ad hoc mandate, conciliation, judicial reorganisation, liquidation and business takeovers.
Goal: act early and choose the most effective route.
Business
law
Company life and day-to-day operations: structuring, commercial relationships, contracts and legal risk management. Practical support aligned with decision-making and liability challenges.
Goal: secure your commitments and operations.
Administrative
law
Disputes with public authorities and challenged decisions. Assert your rights within the required deadlines: administrative penalties, implicit or explicit refusals, adverse decisions, and disputes involving public bodies.
Goal: frame the case and build a solid appeal.
Customer reviews
Coaching & Advisory
Decide fast, decide right
Tax matters, procedures, risk exposure: executives need a clear framework to make the right calls. We provide coaching, workshops and advisory sessions to analyse a situation, secure a decision and define an operational action plan.
Online consultation
Video or written, when you need it
Need a quick opinion or a strategy before taking action? Online consultation gives you a clear assessment (video call) or a structured answer (written consultation), without travelling.
News
- Tax and customs law
Tax optimisation means reducing a company’s tax burden by using mechanisms expressly provided by law, without circumvention or artificial arrangements....
- Tax and customs law
Feared by many business owners, a tax audit is rarely a matter of chance. While some audits may appear random,...
- Tax and customs law
Is it really possible to avoid a tax audit in France? It’s a question many business owners ask themselves—often with...
- Companies in Financial Distress
Acquiring a company in difficulty can represent a real opportunity for savvy investors. Indeed, this operation allows you to acquire...
- Administrative Law
Administrative law is a branch of public law that governs the actions of public authorities and regulates their relationships with...
- Administrative Law
In administrative law, respecting response deadlines is crucial for ensuring the proper handling of appeals and procedures. Whether it’s a...
Frequently asked questions
When should I consult a tax lawyer in Marseille?
When you have doubts before a decision (structure, transaction, VAT), when you receive a letter from the tax authorities, or as soon as a tax audit is announced.
Do you work only in Marseille?
Yaël Sion & ASSOCIATES law firm is based in Marseille and can also assist remotely throughout France, depending on your situation and preferred appointment format.
Can you assist during a tax audit or after receiving an adjustment notice?
Yes. The goal is to structure communications, secure supporting documents, respond within deadlines and defend your position in a consistent and documented manner.
What are your main practice areas?
Tax & customs law, companies in financial distress, business law and administrative law, with support tailored to your objectives and constraints.
Do you offer online consultations?
Yes: video consultation or written consultation, to obtain a clear and actionable opinion without travelling.
What documents should I prepare for a first appointment?
The letter received (if applicable), key figures, and any document that explains the context (contracts, correspondence, relevant accounting documents).
How are fees set?
Depending on the nature of the matter (advice, urgent situation, proceedings), with clear information from the start and, where appropriate, an engagement letter / fee agreement.
