Japan’s $2 Trillion Crypto Shift: 20% Tax Reform and $2B Bitcoin Holdings
Japan, the 5th largest economy with a GDP of over $4 trillion, is set to make big changes to its cryptocurrency market...

Quick overview
- Japan, the 5th largest economy, is reforming its cryptocurrency market to encourage responsible adoption and investment diversification.
- The proposed changes include reducing the crypto tax rate from up to 55% to a flat 20%, aligning it with equities.
- New regulations will introduce insider trading rules and support for Web3 to retain domestic tech talent.
- Japan's corporate sector is embracing crypto, exemplified by Metaplanet's inclusion in the FTSE Japan Index, signaling institutional acceptance.
Japan, the 5th largest economy with a GDP of over $4 trillion, is set to make big changes to its cryptocurrency market. Finance Minister Katsunobu Kato said digital assets can be part of investment diversification despite their volatility. The government wants to build a transparent framework that encourages responsible adoption.
The Liberal Democratic Party (LDP), Japan’s ruling party, is leading the charge. Right now, individual crypto gains are taxed up to 55%. Under the proposed plan, profits will be 20% flat tax—same as equities and more investor friendly.
Key proposed reforms:
- 20% Flat Tax: From up to 55% rates, making crypto more attractive.
- Insider Trading Rules: Equities style rules to curb manipulation.
- Web3 Support: Policies to retain domestic tech talent.
Strict Rules, Strategic Growth
Japan has always been tough on digital assets after several high profile hacks. These rules may be restrictive but Japan is one of the most regulated crypto market in the world.
Under former Prime Minister Fumio Kishida, Japan shifted towards embracing Web3 to counter talent flight to less regulated markets. The LDP’s proposals reflect that balance: stronger investor protection and market friendly reforms.
The new framework will also prevent unfair gains from insider knowledge such as token listings or protocol upgrades—an issue that has plagued exchanges globally. By formalizing rules similar to traditional equities, Tokyo is signaling to legitimize crypto and minimize systemic risk.
Bitcoin Treasury Joins FTSE Japan Index
Japan’s growing crypto presence is also reflected in the corporate world. Metaplanet, Japan’s largest Bitcoin treasury holder, was added to the FTSE Japan Index, a benchmark for mid and large cap equities.
The company’s Bitcoin strategy is similar to US pioneer MicroStrategy. CEO Simon Gerovich announced a new $11.7 million purchase of Bitcoin, bringing Metaplanet’s total holdings to almost $2 billion. Its inclusion in a major index means institutional acceptance of Bitcoin as a corporate asset.
With policy reform on the horizon and corporations increasing their digital exposure, Japan is becoming the global hub for crypto innovation—balancing regulation with growth opportunities.
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