Crypto lawyer in Paris.
Individual investor, company director or Web3 business: QOMIT advises and defends you on the tax questions raised by your crypto-assets. Founded by Maître Stéphanie Némarq-Attias, a tax lawyer with seventeen years of experience, fifteen of them at leading business law firms, the firm, located in the 8th arrondissement of Paris, practices exclusively in tax law: anticipate, regularize, defend.
Background and recognition
Maître Stéphanie Némarq-Attias practiced for fifteen years at CMS Francis Lefebvre, before founding and heading the Tax department of d&a partners, then creating QOMIT in 2025, an independent and committed firm. A graduate of EDHEC Business School and Paris-Sorbonne University, she is recognized by Best Lawyers© in the Tax Law category, is a former President of the Tax Commission of the ACE (Avocats Conseils d'Entreprises) and serves as Legal and Tax Manager of the Women in Crypto Association (AWIC).
Her analysis of crypto-asset taxation is regularly sought by the media: BFM Crypto, Les Échos, Le Monde, Capital, Option Finance, Cryptoast, the Unhosted podcast.
What the firm does for you
QOMIT supports individuals and businesses “at every key moment” in the life of their crypto-assets: before (strategy), during (audit), after (regularization, defense).
Tax strategy for your crypto-assets
Selling a portfolio, switching between assets, preparing the annual tax return, structuring your wealth, international mobility: we structure your projects with tailor-made solutions, to secure your transactions before they raise questions. Addressed upstream, taxation becomes a performance lever for your projects rather than a risk you endure.
In the event of a tax audit: response and defense
A request for information or supporting documents, a desk audit, an in-depth examination of your personal tax situation (ESFP), a “proposition de rectification” (reassessment notice): each step calls for a strategic response, within the deadlines and in the proper form. The firm handles the dialogue with the tax authorities, challenges reassessments line by line and defends you, up to tax litigation if necessary — including against surcharges of 40% (deliberate breach) or 80% (undisclosed activity).
Regularization: foreign accounts and undeclared gains
An account opened on a foreign platform and never declared, omitted capital gains, a forgotten form 3916-bis (the declaration of foreign accounts): voluntary regularization, initiated before any audit, remains the most favorable route. The firm has designed a regularization process for foreign crypto accounts at a fixed fee, known before you start. Regularizing before any audit means keeping the initiative and the benefit of the voluntary approach.
Businesses & Web3: the taxation of your blockchain projects
The firm advises businesses and their directors on the tax issues of projects built on blockchain technology: tax structuring of activities, treatment of tokens, treasury held in crypto-assets, and the associated reporting and accounting obligations. An integrated approach, from the director to the company.
Why a lawyer dedicated to crypto-assets?
The taxation of crypto-assets changes almost every year. The capital gains regime for digital assets, reporting obligations for accounts held abroad (form 3916-bis), successive finance laws, the DAC8 directive taking effect on January 1, 2026: every filing season brings its share of new rules — and of opportunities to get things wrong in good faith.
At the same time, the French tax authorities have acquired powerful new tools. Data mining, the right to obtain information from exchange platforms, international cooperation: from 2027, platforms will automatically report to the DGFiP (the French tax administration) the identity of their clients and the value of their accounts. Information that was out of the administration's reach yesterday will become accessible — including for past years.
Bitcoin, altcoins, tokens of blockchain projects: the subject matter is technical — self-hosted wallets, staking, lending, NFTs, airdrops, the line between private wealth management and professional activity. This is precisely the firm's home ground: crypto-asset taxation is one of its four pillars of expertise, and has been its daily work since the firm was founded.
How does a first conversation work?
- A confidential first contact. You write to the firm through the contact form or book an appointment. From this very first exchange, your information is covered by the lawyer's professional secrecy.
- An analysis of your situation. Transaction history, accounts and platforms involved, any letters from the tax authorities: together we identify the real issues — often narrower than feared.
- An action plan and transparent fees. You leave with a clear roadmap and a fee proposal established before any engagement.
We pass no judgment: every year, the firm assists taxpayers who had simply never realized the full extent of their obligations. The earlier the conversation takes place, the more options are available.
What we do not do
The firm's strength lies in a deliberate choice: practicing tax law only. QOMIT therefore does not handle:
- licensing and registration of crypto service providers with the regulator — the transition from the former French PSAN status to the European MiCA regime (“PSCA” license);
- criminal defense;
- commercial litigation (disputes between shareholders, disagreements with an exchange platform).
If your needs fall within these areas, we will tell you at the very first conversation and can, where appropriate, refer you to colleagues with the relevant expertise. This deliberately narrow scope allows the firm to concentrate its practice on what constitutes, in the vast majority of crypto situations, the heart of the matter: tax.
Frequently asked questions
When should you consult a crypto lawyer?
As soon as a letter from the French tax authorities reaches you, before initiating a regularization, before a significant disposal of crypto-assets, or when structuring a Web3 project. The golden rule: consult before acting or replying — an improvised answer to the administration can close off options a lawyer would have preserved.
Does the firm work outside Paris?
Yes. The firm is located in the 8th arrondissement of Paris (avenue Hoche) and assists clients throughout France and abroad, by videoconference as well as in person. Exchanges with the French tax authorities take place in writing and remotely: where you live is not an obstacle.
How much does a crypto lawyer in Paris cost?
Fees depend on the nature of the matter and are set with full transparency, before any engagement. Some services are offered at a fixed fee, known before you start: the regularization of a foreign crypto account starts at €1,200 (VAT included).
Is the conversation confidential?
Absolutely. Everything you entrust to a lawyer is covered by professional secrecy, including at the first contact and even if you ultimately decide not to instruct the firm.
I have never declared my crypto: can you help me?
Yes — it is in fact one of the most common situations. A voluntary regularization, initiated before any audit, makes it possible to request a discretionary waiver of penalties (“remise gracieuse”). With the automatic exchange of platform data starting in 2027, initiating the process before that deadline means choosing its timing and its terms.