France moves to share Bitcoin trade data with tax authorities across 46 jurisdictions initially

France is a step closer to letting foreign tax authorities see what its residents do with their crypto. On October 27, 2026, the French Senate approved bill No. 921, which would implement the OECD’s Crypto-Asset Reporting Framework, known as CARF.

The measure is not law yet. It still has to clear the National Assembly. But the direction is clear: crypto transaction data is about to become something tax offices swap with each other automatically.

What the Senate actually approved

The bill authorizes France to put CARF into practice through a multilateral competent authority agreement. That is diplomatic language for a shared rulebook that lets tax agencies in different countries exchange information without negotiating one deal at a time.

The first exchanges are scheduled for 2027. At that stage, 46 jurisdictions are set to take part, including France, Germany, the UK, Japan and Canada.

The group is expected to grow. By 2029, the framework is projected to reach 77 participating jurisdictions, with additions that include Switzerland and the US.

What data gets shared

The scope is broad. Under the bill, platforms would report a user’s identity, tax residency and tax identification number.

Transaction counts are included too. So are total asset values, broken down by the type of transaction.

Self-custody is not exempt either. Transfers to self-custody wallets, meaning wallets where the user controls the keys rather than an exchange, would be reported on an aggregate basis.

How France got here

None of this arrived out of nowhere. France signed the multilateral agreement in Asunción on November 26, 2024.

Domestically, the groundwork is already running. Data collection under the EU’s DAC8 rules began in France on January 1, 2026, and the first full reports are expected in 2027.

So the Senate vote is less a starting gun than a connecting cable. France has been collecting the information at home. CARF is the mechanism that would let it send that information abroad and receive the equivalent from partners.

The timeline lines up neatly. Collection began in 2026, reports land in 2027, and cross-border sharing with the initial 46 jurisdictions is set for the same year.

What to watch next

The immediate question is the National Assembly. Until it approves the bill, the Senate vote remains a strong signal rather than a finished law.

After that, the 2027 start date becomes the key milestone. That is when the first exchanges among the 46 initial jurisdictions are scheduled, and when the first DAC8 reports from France are expected to surface.

The longer arc runs to 2029. If the framework does reach 77 jurisdictions, including the US and Switzerland, the global map of crypto tax reporting will look very different from today’s patchwork.