The fees of a tax lawyer in France do not appear on a single scale. They depend on the work entrusted, its difficulty and the time it requires. Yet the law governs how they are set in precise terms. So, before any commitment, you know how your lawyer will be paid.
This page explains the applicable rules, the usual billing methods and the content of a fee agreement. It also explains what distinguishes a lawyer (avocat) from a “tax adviser” who does not practise a regulated profession. You will then understand what a quoted rate actually covers. For an overview of our work, see the presentation of our tax law firm.
What French law requires when a tax lawyer sets fees
Article 10 of Law No. 71-1130 (the French statute governing the legal professions) lays down the principle: fees are set by agreement with the client. The lawyer therefore cannot set their remuneration unilaterally. The same text requires a written fee agreement. Only urgency, force majeure and certain work carried out under legal aid are exempt from this requirement.
The criteria set by the law
The law lists the factors used to assess the amount of the fees. These are the client’s financial situation, the difficulty of the case and the costs incurred. The lawyer’s reputation and the work carried out are also taken into account. These criteria explain why two tax matters that look similar can lead to different fees.
What is prohibited and what is allowed
A fee set solely on the basis of the outcome of the case is prohibited. A lawyer therefore cannot be paid only if the dispute ends in your favour. The law does, however, allow an additional success fee. It is added to the fees for the services provided, and never replaces them.
Fixed fee, hourly rate, success fee: billing methods
The agreement sets out the amount of the fees or how they are determined. In practice, three methods are used, alone or combined. The choice depends mainly on one question: can the work be defined from the outset? The table below summarises their usual uses.
| Billing method | Typical work | What you know in advance |
|---|---|---|
| Fixed fee | Advance tax ruling request, reply to a proposed tax reassessment, one-off analysis | The price of the defined work |
| Hourly rate | Tax review (audit fiscal), assistance during a tax audit, litigation | The rate applied and how time is recorded |
| Success fee | In addition to a fixed fee or an hourly rate | The basis and method of calculation of the additional fee |
Fixed fees for clearly defined work
A fixed fee suits tasks whose scope is known in advance. This is often the case for an advance tax ruling (rescrit fiscal) request sent to the tax authorities. It is also the case for a reply to a proposed tax reassessment received after an audit. You know the price of the work before it starts. The agreement then states what the fixed fee covers and what it excludes.
Hourly rates for tax reviews and litigation
Some work evolves as exchanges with the tax authorities or the court progress. A tax review, assistance during a tax audit or litigation are examples. Their length depends on outside factors, such as the inspector’s requests or a court’s timetable. The time spent on the matter is then the basis of calculation. The agreement may provide for a statement of the work carried out with each invoice.
The success fee as an addition
The success fee is added to a fixed fee or an hourly rate. It may, for example, depend on the amount of the reassessments finally dropped by the tax authorities. Its basis and method of calculation are set out in the agreement. It is never the lawyer’s only remuneration.
What a fee agreement contains
The fee agreement is the written document that sets the ground rules between you and your lawyer. It sets out the amount of the fees or how they are determined. These fees cover the foreseeable work involved. The agreement also mentions the expected costs and disbursements. In practice, it generally includes the following:
- a description of the work and its limits;
- the chosen method of remuneration: fixed fee, hourly rate or a combination of both;
- the expected costs and disbursements, such as travel or translations;
- where applicable, the additional success fee and its basis of calculation;
- invoicing and payment terms.
Lawyers’ fees are in principle subject to VAT at the standard rate. The agreement states whether amounts are excluding or including VAT. Our general billing principles are set out on the firm’s rates and fees page. They are then adapted to each matter in the agreement.
Why the first discussion helps scope the fees
A tax matter is hard to price without seeing the documents. The first discussion helps us understand your situation, your objectives and your deadlines. We identify the procedure under way, the taxes involved and the documents available. This step allows us to suggest the most suitable billing method.
This first discussion is not advice on the merits of your case. Its purpose is to define the scope of the work before a fee agreement is signed. Every situation is different: a reliable estimate requires knowledge of the precise facts. You then decide, with full knowledge of the facts, whether or not to entrust us with the matter.
Tax lawyer or “tax adviser”: what is the difference?
The term “tax adviser” (conseiller fiscal) is sometimes used by people who do not practise a regulated profession. Yet Law No. 71-1130 strictly governs paid legal advice. Its Article 54 reserves it to people who meet specific conditions. Its Article 59 opens it to regulated professions, within the limits of their rules and of their main activity.
A tax lawyer can advise you and represent you before the tax authorities. They act from the reply to a tax audit through to litigation before the courts. Their fees follow the rules of Article 10 and their professional ethics. Comparing the rate of a “tax adviser” with a lawyer’s fees therefore also means comparing the scope of the work.
How we assist you
We start with a discussion to understand your needs and any urgency. We then send you a written fee agreement suited to the work. It sets out the method of remuneration, the planned work and the expected costs. If the work changes, we discuss it with you before carrying out any further work.
Harry Allouche, a lawyer admitted to the Paris and Quebec Bars, heads the firm’s tax team. We assist you with tax audits, tax claims, advance ruling requests and litigation. The firm welcomes you at 51 avenue Franklin Delano Roosevelt, Paris (8th arrondissement). To discuss your matter and receive a proposed fee agreement, contact our team.
Frequently asked questions
How much does a tax lawyer cost in France?
Fees are not set by a single scale. Article 10 of Law No. 71-1130 provides that they are set by agreement with the client, according to the client’s financial situation, the difficulty of the case, the costs incurred, and the lawyer’s reputation and work. The amount, or the method used to calculate it, is set out in the fee agreement.
Is a fee agreement mandatory?
Yes, except in cases of urgency, force majeure or certain work carried out under legal aid. Article 10 of Law No. 71-1130 requires a written agreement. It sets out the amount of the fees or how they are determined, as well as the expected costs and disbursements.
Can a tax lawyer be paid on a success-only basis?
No. Article 10 of Law No. 71-1130 prohibits setting the fee solely on the basis of the outcome of the case. An additional success fee remains possible, on top of the fees for the services provided.
Are lawyers’ fees subject to VAT?
In principle, yes, at the standard VAT rate. The fee agreement states whether amounts are expressed excluding or including VAT.
What is the difference between a tax lawyer and a tax adviser?
Paid legal advice is reserved by Article 54 of Law No. 71-1130. Article 59 opens it to regulated professions, within the limits of their rules and of their main activity. Someone outside a regulated profession therefore cannot offer the same services as a lawyer.
Official sources
- Article 10 of Law No. 71-1130 (setting of fees and fee agreement): Légifrance (in French)
- Article 54 of Law No. 71-1130 (legal advice reserved to qualified persons): Légifrance (in French)
- Article 59 of Law No. 71-1130 (legal advice by regulated professions): Légifrance (in French)
Law as in force on 1 October 2026. Content written under the responsibility of Harry Allouche, avocat. This content provides general information and does not constitute legal advice. Every situation is different: the firm commits to the means it deploys, without any promise of outcome.
