Tax lawyer · Avocat at the Paris Bar

Cabinet Dechamps

Cabinet Dechamps advises you on your international tax and tax criminal law matters.

Technical, precise and unforgiving, taxation is a high-level sport. It is also risky, even dangerous, and must be handled with method and rigour.

Maître Maximilien Dechamps
Maximilien Dechamps, member of the Paris Bar.
Maître Maximilien Dechamps Barreau de Paris

Background

Education
Sciences Po Strasbourg · Master 2 in public law, top of his class
Court
Administrative Court of Strasbourg
Institution
Banque de France
Firms
CMS Francis Lefebvre · KPMG Avocats · EY
Bar
Paris

A deliberately narrow practice

The firm has chosen two areas rather than a general tax practice. International tax and tax criminal law share the same demands: high technicality, high stakes, and procedures in which an early mistake is hard to undo. The two often meet in practice, since a mishandled cross-border matter can end up before the criminal judge.

Method

Every matter begins with a written analysis of the situation and a detailed fee agreement, before any commitment. Exchanges with the firm are covered by legal professional privilege, including vis-à-vis the tax authorities. Consultations take place at the firm, in Paris, or by video conference, in French, English and German.

Areas of practice French tax International tax Tax criminal law

Maximilien Dechamps, in his robe, taking the oath of the French avocat in a courtroom.

Je jure, comme avocat, d’exercer mes fonctions avec dignité, conscience, indépendance, probité et humanité.

The oath of the French avocat

How your matter is handled

A simple, transparent process — from first contact to the resolution of your case.

  1. You describe your situation

    Through the online form, in just a few minutes. Your exchanges are protected by attorney-client privilege.

  2. A reply within 24 hours

    The firm gets back to you within one business day and offers a consultation within 48 hours, in Paris or by video call.

  3. Analysis and fee estimate

    You leave with a clear analysis of your tax situation and a detailed fee agreement, before any commitment.

  4. Defending your interests

    Tax strategy, dealings with the authorities or litigation: you are kept informed at every stage of your matter.

Frequently asked questions

Why consult a tax lawyer rather than an accountant?

An accountant prepares your filings; a tax lawyer builds the strategy upstream, secures complex operations (sale, transmission, moving abroad) and defends you before the authorities. Exchanges with a lawyer are also covered by absolute professional privilege, including vis-à-vis the tax authorities.

Does the firm handle Franco-Luxembourg matters?

Yes — this is one of the firm’s core areas of development: commuter taxation, application of the tax treaty of 20 March 2018, structures involving Luxembourg entities. For questions governed strictly by Luxembourg law, the firm works in a network with colleagues admitted to the Luxembourg Bar.

How much does a tax consultation cost?

The first consultation is offered at a fixed fee, communicated before any commitment. Following that consultation, a written fee agreement details the cost of the engagement, on a fixed-fee or time-spent basis depending on the nature of the matter.

What should I do if I receive a reassessment proposal from the tax authorities?

You generally have 30 days to respond, extendable by a further 30 days on request. Do not respond alone: a poorly framed answer can lock the file. Contact a tax lawyer as soon as you receive it, to protect your rights and build the response strategy.

Do you work remotely?

Yes. Consultations take place at the Paris office or by video call, which makes it possible to assist clients across France and abroad. The firm works in French, English and German.

Describe your situation

A few lines are enough. The firm will get back to you within 24 business hours for a first discussion and, if needed, offer a consultation at the office or by video call.

The firm
56 avenue Kléber
75116 Paris
Languages
French, English, German. At the office or by video call.

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