Law firm dedicated to start-ups, the digital sector & blockchain

We represent the present the future
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Why Hashtag?

Located at 51 avenue Franklin Delano Roosevelt, 75008 Paris, Hashtag Avocats assists innovative businesses, from dynamic young start-ups to mid-sized companies and large groups. We position ourselves as your preferred legal guide in the complex world of new technologies. Our approach is shaped by a close understanding of the challenges facing tomorrow’s pioneers.

We cultivate in-depth expertise in areas essential to your growth: structuring and securing fundraising, protecting and leveraging intellectual property, and a sharp command of the frameworks governing cryptocurrencies, blockchain, NFTs and Web3. We place particular emphasis on GDPR compliance and tax optimisation, while anticipating developments in AI law and the regulation of ICOs (in particular MiCA and the AI Act). Our commitment is to turn every legal issue into a lever for your company’s development.

Expertise

Areas of expertise

# Start-up law

We guide start-up innovators and entrepreneurs through the legal maze of a company’s early days, to give their projects a solid legal framework.

# Cryptocurrencies

We advise you on the regulations applicable to digital assets, their use and their transactions.

# Fundraising

P-E, BSA Air, Equity

# Blockchain

We provide the legal structure for your blockchain projects and check their compliance with European and international frameworks.

# Intellectual property law

We defend and add value to creations of the mind, offering robust protection of copyright, trade marks and patents to secure and capitalise on innovation.

# Tax

We advise our clients on their tax obligations and on how their tax affairs are organised, in strict compliance with the laws in force.

# NFT

We assist with your NFT projects by ensuring their legal and contractual compliance, as well as the protection of their intellectual property.

# GDPR compliance

We guide organisations through the complexities of GDPR compliance, protecting personal data while fostering innovation and trust.

# Cybersecurity

We assist companies before and after a cyberattack: security obligations, crisis management, notification to the CNIL and action against the perpetrators.

# Web 3

We provide a legal framework for your Web3 initiatives with comprehensive legal advice tailored to decentralised models.

# New technologies

We advise you on the legal issues raised by new technologies, from their development to their operational use.

# ICO

We provide the legal framework for your ICOs, make your white papers legally secure, analyse MiCA compliance and assist with your digital-asset fundraising within a well-controlled regulatory framework.

# AI

We advise companies on the legal issues raised by artificial intelligence, from model compliance to data governance, taking into account the requirements of the AI Act and operational risks.

# M&A

Due diligence, GAP (asset and liability warranty), SPA

# Insolvency proceedings

Judicial liquidation (LJ), receivership (RJ), safeguard proceedings (SJ), pre-pack sale and directors’ liability

# Tax optimisation for company directors

Remuneration and structuring

# Groups of companies

Holding companies, management fees, cash pooling agreements and transfer pricing.

# Tax audit

Tax and URSSAF (social security) audits.

# Corporate law

Company formation, shareholders’ agreements and shareholder exits (negotiation).

# Employee/manager incentives

BSA (share subscription warrants), BSA advisors, BSPCE (start-up employee share warrants) and free shares (AGA).

# Business assets (fonds de commerce)

Acquisition and sale of businesses (fonds de commerce).

# Corporate

Amendments to the articles of association, removals from office, general meetings, board meetings and approval of the accounts.

# Personal tax

Tax returns and corrections to past filings.

# Tax lawyer

Private wealth tax optimisation, Corporate tax structuring, Tax audit assistance, Tax litigation, M&A tax, International tax and mobility.

Clients

We mainly assist

How do I get started?

Our process

1
Contact

Contact us for an initial discussion

2
Defining your needs

Analysis of your situation and objectives

3
Fee proposal

Per matter, hourly or on a subscription (retainer) basis

4
Start of the engagement

Tailored support

News

Latest publications

REALISER UNE LEVEE DE FONDS

Running a Fundraising Round: Pre-Money and Post-Money Valuation

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MONNAIE VIRTUELLE : VERS LE RETOUR DU BITCOIN?

Young Innovative Company (JEI) in France: 2026 Tax Regime

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At the heart of the Paris entrepreneurial ecosystem, Hashtag Avocats is a law firm working for founders: a start-up lawyer assisting founders, scale-ups, investors and innovative companies on matters of corporate law, digital law and emerging technologies. We act across the entire life cycle of a young innovative company: start-up formation (choice of legal form, articles of association of an SAS, the French simplified joint-stock company), structuring the shareholders’ agreement, issuing BSA-AIR and granting BSPCE, preparing a fundraising round, from negotiating the term sheet to structuring a Seed or Series A round, through to transactions involving venture capital funds, family offices or business angels (in French).

Our expertise also covers matters related to technological innovation, whether setting the legal framework for a blockchain project, auditing the compliance of a Web3 platform, securing a DeFi protocol, structuring NFTs, or advising a company handling crypto-assets, stablecoins or smart contracts (in French). We analyse European and international regulations – MiCA, DSA, GDPR, the ePrivacy Directive, rules of the CNIL (French data protection authority), requirements of the DGCCRF (in French) (French consumer protection authority), IT security standards – in order to offer our clients a forward-looking approach.

We also handle intellectual property issues, in particular the protection of trade marks, patents, copyright and innovative digital creations. Our lawyers advise product, tech and marketing teams on drafting IT contracts, SaaS agreements, software licences, terms of sale, terms of use (in French), IT charters, privacy policies, terms of use for digital platforms (in French) and technology partnership agreements.

On tax matters, we assist company directors (in French) in structuring their transactions and in managing stock options, BSPCE, management packages, restructurings, business transfers or international issues. Our work also covers tax audits, litigation, requests for tax rulings and strategic decisions.

Our teams are also called upon for matters of GDPR, cybersecurity, management of sensitive data, compliance with European obligations or the preparation of legal audits during an investor due diligence. Finally, we assist companies with commercial disputes, conflicts between shareholders, disputes relating to the provision of digital services and IT disputes involving integrators, software publishers, platforms or cloud providers.

With a multidisciplinary team combining IP/IT, corporate, tax, personal data (in French), commercial disputes and advanced technologies, we offer comprehensive support to players in the digital, finance, innovation and emerging industries.

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