French Senate Backs Crypto Tax Data Sharing Bill Under OECD Rules

France’s Senate has backed crypto tax data sharing with foreign tax authorities. On Oct. 27, 2026, it adopted on first reading a bill covering agreements built on the OECD’s Crypto-Asset Reporting Framework. The text now goes to the National Assembly as Bill no. 3421, and it isn’t law yet, Cointelegraph reported on Oct. 29.

What we know about the crypto tax data sharing bill

The Senate passed the text on Tuesday, Oct. 27, and sent it to the lower house for consideration. According to Cointelegraph, the bill covers two things: an agreement on exchanging crypto tax information, and an update to an existing agreement on financial account information.

The crypto part rests on CARF, a standard developed by the Organisation for Economic Co-operation and Development. It gives participating jurisdictions common rules for collecting crypto transaction data and passing it automatically to one another. A report carried by TradingView News said the vote concerns agreements signed in Asunción, Paraguay, in November 2024.

What platforms would have to report

Under the framework, crypto platforms would send authorities each user’s identity, tax residence and tax identification number. They’d also report the number of transactions, the quantities and the total value, broken down asset by asset. The reporting covers:

• crypto-to-fiat conversions
• crypto-to-crypto swaps
• transfers

So swapping one token for another, or moving coins between wallets, wouldn’t fall outside the reporting net simply because no euros changed hands.

How the new rules build on DAC8

France isn’t starting from zero. Its 2025 Finance Act already introduced reporting duties by implementing DAC8, the crypto amendment to the EU’s Directive on Administrative Cooperation. Those rules require providers to report customer identities and transaction data to the tax authorities, which then pass the information to tax offices in users’ EU countries of residence.

The difference lies in scope. DAC8 sharing runs between authorities in EU countries of residence. The CARF agreements, by contrast, set a common standard for participating jurisdictions and concern exchanges between international tax authorities. Separately, as Finwire reported, the European Commission plans to create a central repository for crypto reports by the end of 2026, giving each member state’s tax authorities access to information on their own residents.

What is still unclear

Quite a lot. The National Assembly still has to examine Bill no. 3421, and none of the sources give a date for that debate or for when France’s first CARF-based exchanges would actually happen.

Lawmakers are also busy with the 2027 budget. On Oct. 16 the National Assembly adopted an amendment that would make gains from conversions into certain fiat-pegged stablecoins taxable from Jan. 1, 2027. That measure isn’t law either. Debate on the budget’s revenue section resumed on Tuesday, with a vote scheduled for Nov. 3, according to Finwire.

Two other gaps stand out. The sources don’t say which stablecoins the budget amendment would cover, and they don’t explain how the planned EU repository would be secured.

How markets and the industry reacted

Prices barely moved, and there’s no sign the vote itself drove trading. Major coins were mostly flat to slightly lower on the day, according to CoinGecko data at 18:13 UTC on Oct. 29, 2026.

Bitcoin traded between $79,636 and $81,840 over 24 hours and sits about 36% below its $126,080 peak of Oct. 6, 2025. The Crypto Fear & Greed Index read 51, or Neutral, on Oct. 29.

Security worries over centralized crypto records

The sharper reaction came on data security. KuCoin’s news flash cited Faustine Fleuret of Morpho, who warned of data security risks, noting that centralized storage may become a “single point of failure.”

That concern has a physical edge in France. The same KuCoin report said the country recorded 33 crypto “wrench attacks” in the first half of 2026, including a $1 million Bitcoin theft in March. In our reading, the implied risk is that a database linking names, residences and holdings could itself become a target. For related coverage, see BIS research on secure computing for central banks and an FBI probe into a claimed recruitment portal compromise.

What it means for investors

For French residents, the practical effect is visibility. The bill concerns the exchange of information rather than a new tax, but it could change what the tax office knows, potentially including activity on platforms in other participating jurisdictions once exchanges begin. Users with complete records of swaps, transfers and conversions may find it easier to match their own filings with what platforms report.

The risks are worth stating plainly. Rules can still change during the parliamentary process, stored personal data can be exposed, and crypto prices remain volatile: Ethereum was down 12.63% over 30 days and 41.11% over a year as of Oct. 29. For a separate policy story from the US, see our coverage of the National Sheriffs’ Association’s stance on the CLARITY Act. Tax rules differ by country, so anyone unsure about their obligations should check with a qualified tax professional.

Bottom line

The Senate vote moves France’s crypto tax data sharing framework a step closer to law, but the legislative process isn’t complete. The things to watch are the Assembly’s timetable for Bill no. 3421, the Nov. 3 budget vote and how the EU plans to protect the sensitive data it intends to centralize.

Sources

• French Senate adopts bill for automatic sharing of crypto tax data (Cointelegraph)
• French Senate Adopts Bill for Automatic Sharing of Crypto Tax Data (cointelegraph.com)
• French Senate approves OECD crypto tax data-sharing framework, TradingView News (www.tradingview.com)
• French Senate Adopts Bill for Automatic Sharing of Crypto Tax Data (finwire.io)
• French Senate Approves Bill for Automatic Crypto Tax Data Sharing (www.kucoin.com)

This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrencies are highly volatile; always do your own research before investing.