Japan's parliament passed a bill this week that overhauls the country's digital currency laws, bringing crypto assets under a formal financial regulatory framework. The legislation introduces a ban on insider trading in cryptocurrencies and cuts the tax on crypto gains to a flat 20%.
What the bill does
The reform integrates digital assets into Japan's existing financial regulatory system, giving regulators clearer authority over exchanges and token issuers. It's the first major update to Japan's crypto laws since the 2017 Payment Services Act amendments that followed the Mt. Gox collapse.
Under the new rules, crypto transactions will be treated more like traditional securities for oversight purposes. The bill also requires exchanges to register with the Financial Services Agency and comply with stricter custody and reporting standards.
Insider trading prohibition
A key provision makes insider trading in crypto assets explicitly illegal. Previously, Japan's insider trading laws only covered securities and certain financial instruments, leaving a gap for digital tokens. The new law closes that gap, making it a crime to trade on non-public information about a crypto project or exchange.
The move aligns Japan with jurisdictions like the United States and the European Union, which have been tightening rules around market manipulation in crypto.
Tax cut details
The bill reduces the tax on cryptocurrency gains to a flat 20%, down from the previous progressive rate that could reach 55% for high earners. The change applies to individual investors and is retroactive to the start of 2026, according to the legislation.
Japan's high crypto tax had been a persistent complaint from traders and startups, with some moving operations to lower-tax jurisdictions like Singapore. The cut is expected to encourage more domestic trading and investment.
The reform increases the possibility for Bitcoin adoption in Japan, though the bill doesn't specifically name Bitcoin. By providing a clearer legal status for digital assets, the law could pave the way for more institutional involvement and broader use of crypto in payments and savings.
Japan has long been one of the more crypto-friendly developed economies, but regulatory uncertainty and high taxes had slowed growth in recent years. This bill aims to reverse that trend.
The legislation now heads to the cabinet for formal approval, which is expected within weeks. The FSA is expected to release implementation guidelines by the end of the third quarter.
