France is entering a new era of cryptocurrency tax transparency as European reporting rules begin bringing more digital-asset transactions into the view of tax authorities.
A new Chainalysis estimate suggests that France generated approximately $9.4 billion in potentially taxable crypto activity during 2025, placing it 13th among the countries examined in the firm’s latest analysis. The figure comes as France prepares for significantly greater access to cryptocurrency transaction data under the European Union’s DAC8 framework and the OECD’s Crypto-Asset Reporting Framework (CARF).
Importantly, the $9.4 billion figure does not represent taxes owed, unpaid taxes, taxable profits or government revenue. It is an estimate of crypto-related economic activity that could potentially have tax implications depending on the transaction and the taxpayer’s circumstances.
France’s Crypto Activity Reaches $9.4 Billion
Chainalysis estimated that potentially taxable on-chain cryptocurrency activity worldwide reached at least $457 billion during 2025 across six major blockchains.
The United States led the countries included in the analysis with approximately $112.6 billion, while the European Union collectively accounted for around $125.1 billion.
France ranked 13th, with its estimated $9.4 billion of activity divided into three broad categories:
- $1.7 billion in crypto income
- $2.5 billion in realized gains
- $5.2 billion in crypto payments
The income category includes activity associated with areas such as mining, staking, lending and gambling, while the gains category covers activity connected to centralized and decentralized exchanges.
The payments category includes cryptocurrency transactions associated with merchant services and peer-to-peer economic activity.
These categories should not be interpreted as equivalent forms of taxable income. A crypto payment, for example, can have very different tax consequences from a realized investment gain, while the treatment of mining or staking income can depend on the taxpayer and applicable French rules.
As a result, adding the three categories together does not produce a figure for France’s taxable profits or the amount of tax the government could collect.
Chainalysis Warns Its Estimate May Be Conservative
Chainalysis based its analysis on activity observed across Bitcoin, Ethereum, Solana, Tron, BNB Smart Chain and Base.
The company used blockchain activity and geographic indicators to estimate where transactions originated, including direct location signals and proportional allocations based on service-level activity.
However, there is an important limitation.
A significant portion of cryptocurrency activity takes place inside centralized exchanges, where users can trade, lend or stake assets without every individual transaction appearing directly on a public blockchain.
That means blockchain-based analysis cannot necessarily capture the full economic activity taking place within centralized platforms.
Chainalysis therefore cautioned that its figures could understate total crypto-related economic income.
This distinction is particularly important when interpreting the French estimate. The $9.4 billion figure should be viewed as an estimate of potentially taxable activity not evidence that French taxpayers owe $9.4 billion in taxes.
France’s Declared Crypto Gains Tell a Different Story
Official French tax data provide another perspective.
Approximately 24,000 taxpayers reported €368 million in cryptocurrency capital gains for the 2024 tax year, according to figures attributed to the French tax administration.
At first glance, the difference between €368 million in declared gains and Chainalysis’ $9.4 billion estimate may appear enormous.
However, the two figures are measuring fundamentally different things.
The €368 million figure represents declared capital gains for 2024, while Chainalysis’ estimate covers 2025 activity across income, realized gains and payments. The figures also use different currencies.
Consequently, the comparison cannot be used to calculate France’s crypto tax gap or determine how much cryptocurrency income went unreported.
It does, however, highlight the growing challenge facing tax authorities: identifying taxable events across an ecosystem where users can move assets between exchanges, personal wallets, decentralized applications and blockchain networks.
DAC8 Changes the Reporting Landscape
The arrival of DAC8 could significantly expand the information available to European tax authorities.
The EU’s cryptocurrency reporting rules took effect on January 1, 2026, requiring covered crypto-asset service providers to collect information relating to reportable transactions involving EU-resident users.
The information can include customer identification details such as:
- Name and address
- Tax identification number
- Date of birth
- Tax residence
- Transaction information
- Aggregated transaction values
- Numbers of certain exchanges, transfers and payments
Providers began collecting reportable transaction information from the start of 2026.
The first reports covering 2026 activity are scheduled to be exchanged between EU tax authorities by September 30, 2027.
That creates a new mechanism through which French tax authorities can compare information supplied by crypto platforms against information declared by taxpayers.
Self-Custody Does Not Mean Invisible Transactions
DAC8 also has implications for transactions involving external cryptocurrency addresses.
Crypto-to-fiat transactions, crypto-to-crypto exchanges and certain transfers involving external wallets can fall within the reporting framework.
This means that a withdrawal from an exchange to a self-custody wallet can potentially appear in information reported by the service provider.
However, the fact that a transaction is reported does not automatically establish that tax is owed.
A blockchain address does not inherently reveal who controls it, why the transaction occurred or how much an asset originally cost. A transfer could represent a sale, a payment, collateral movement or simply a transfer between two wallets belonging to the same individual.
Determining the actual tax liability therefore still requires additional information and the application of national tax rules.
CARF Extends the Reporting Network Beyond Europe
DAC8 is being complemented by the OECD’s Crypto-Asset Reporting Framework, commonly known as CARF.
The framework is designed to create a broader international system for exchanging information about crypto-asset transactions between participating jurisdictions.
The OECD expects the first exchanges of information under CARF to begin in 2027, with France among the jurisdictions committed to the timetable.
Together, DAC8 and CARF could make it substantially harder for taxpayers to rely on geographic fragmentation—such as using an overseas exchange—to keep crypto activity outside the view of domestic tax authorities.
Most On-Chain Activity May Still Require Additional Analysis
Despite the expansion of reporting rules, Chainalysis estimated that activity within the practical reporting reach of CARF represented only around 14% of the potentially taxable on-chain activity identified in its study.
The remaining 86% involved areas including decentralized exchanges, peer-to-peer transactions, on-chain income and payments.
This does not mean that 86% of cryptocurrency activity will remain untaxed or permanently hidden.
Rather, much of that activity may not be directly captured through traditional intermediary reporting because decentralized protocols and private wallets do not necessarily have a centralized entity holding customer identification information.
Tax authorities can still combine information from multiple sources, including:
- Centralized exchange records
- Blockchain analytics
- Tax returns
- Wallet histories
- Audits
- Cross-border information exchanges
This could make blockchain analysis increasingly important as governments attempt to reconstruct complicated transaction histories.
A New Compliance Era for French Crypto Investors
For French taxpayers, the introduction of DAC8 and the expansion of international reporting standards could make accurate recordkeeping more important than ever.
Investors may need to maintain documentation covering purchases, sales, transfers, income and wallet movements, particularly when assets have passed through multiple exchanges or self-custody addresses.
For crypto businesses, meanwhile, the new framework creates significant obligations around customer identification, tax residency verification and transaction reporting.
The emerging system will not automatically reconstruct every historical transaction, nor will a reported transaction by itself determine a taxpayer’s liability. French tax rules will continue to determine how particular transactions are treated.
But the direction is clear: the era in which cryptocurrency transactions could easily remain fragmented across exchanges and wallets is giving way to a much more interconnected reporting environment.
With France estimated to have generated $9.4 billion in potentially taxable crypto activity in 2025, the country’s tax authorities are entering this new reporting era with a substantial digital-asset economy to monitor.
