🇯🇵 How to Buy Cryptocurrency in Japan: A Complete Guide to FSA-Registered Exchanges, KYC, and Tax Treatment

Japan requires all cryptocurrency exchanges to register with the Financial Services Agency under the Payment Services Act. This guide covers FSA verification, JPY deposit methods, My Number requirements, fees, and how crypto profits are taxed as miscellaneous income.

FSA Registration and Why It Matters

Japan's Payment Services Act mandates that all cryptocurrency exchanges operating in the country must register with the Financial Services Agency (FSA). This registration ensures exchanges meet strict capital requirements, maintain segregated customer funds, implement robust security measures, and undergo regular audits. Operating an unregistered exchange is illegal, and residents face significant risk using offshore platforms that lack FSA approval.

To verify an exchange's registration status, visit the FSA's official website and check the list of registered crypto asset exchange service providers (暗号資産交換業者). The list includes company names, registration numbers, and registration dates. Major FSA-registered exchanges include bitFlyer, Coincheck, GMO Coin, DMM Bitcoin, Bitbank, and Zaif. Always confirm registration before transferring funds, as the FSA updates this list when new exchanges register or existing ones lose their license.

Opening an Account: My Number and KYC Requirements

All FSA-registered exchanges must verify your identity under anti-money laundering regulations. The process requires a government-issued photo ID such as a driver's license, residence card (zairyu card), or My Number card. Most exchanges also require your My Number (Individual Number), which can be provided via the My Number card itself or a notification card (tsuchi card) paired with another photo ID.

Account opening typically takes one to three business days. You'll submit documents through the exchange's website or mobile app, either by uploading images or using real-time photo verification. Some exchanges mail a postcard with an activation code to your registered address as an additional verification step. Foreign residents can open accounts if they hold a valid residence card and have a Japanese address and phone number. Tax laws and compliance requirements change, so this is not legal advice; verify current rules with the exchange or a qualified advisor.

Depositing Japanese Yen: Bank Transfers and Convenience Store Options

FSA-registered exchanges accept Japanese yen through several methods. Bank transfers (furikomi) are the most common, with exchanges providing dedicated virtual account numbers for each customer. Transfers from major banks like MUFG, Mizuho, Sumitomo Mitsui, Resona, and Japan Post Bank typically arrive within the same business day if sent before the afternoon cutoff. Internet banking transfers are usually free or cost 100 to 300 yen depending on your bank.

Many exchanges also accept convenience store payments through services like Family Mart, Lawson, and 7-Eleven. You generate a payment number or barcode in the exchange's app, bring it to the store, and pay in cash. Deposits appear in your exchange account within 10 to 60 minutes. Convenience store deposits often carry fees of 300 to 700 yen per transaction and may have daily limits around 300,000 yen. Some platforms support Quick Deposit services from internet banks and Pay-easy transfers through ATMs. Withdrawal fees to your bank account typically range from 200 to 750 yen depending on the exchange and amount.

Trading Fees and Spreads

FSA-registered exchanges charge fees through maker-taker models or spreads. Maker-taker exchanges like Bitbank and GMO Coin charge separate fees for orders that add liquidity (maker orders, typically 0% to negative 0.02%, meaning you earn a rebate) and orders that remove liquidity (taker orders, typically 0.05% to 0.15%). These exchanges display order books where you can see buy and sell orders at specific prices.

Other platforms like Coincheck use a simpler model where you buy and sell at quoted prices that include a spread—the difference between the buy price and sell price. Spreads vary by cryptocurrency and market conditions but typically range from 0.1% to 5%. Wider spreads mean higher effective costs. When comparing exchanges, calculate the total cost including both trading fees and any deposit or withdrawal charges. Some exchanges waive maker fees or offer reduced rates for high-volume traders.

Tax Treatment: Crypto Profits as Miscellaneous Income

Japan does not treat cryptocurrency profits as capital gains. Instead, the National Tax Agency classifies them as miscellaneous income (zatsushotoku), subject to progressive income tax rates ranging from 5% to 45% plus local inhabitant tax of approximately 10%. This means your total annual income, including salary and crypto profits, determines your tax rate. For example, if your combined income falls in the 20% bracket, your effective rate including local tax approaches 30%.

You must calculate profit for each cryptocurrency transaction using methods like moving-average cost or total-average cost to determine your acquisition cost. If you trade crypto for another crypto (not just selling for yen), that transaction triggers taxable income. Many exchanges provide annual transaction reports, but you remain responsible for accurate calculation and filing. Losses can offset other miscellaneous income but not employment income or capital gains from stocks. Because tax rules change and calculation can be complex, this is not tax advice; consult a Japanese tax professional (zeirishi) familiar with cryptocurrency, especially if your profits exceed basic deduction amounts or you trade frequently.

Choosing an Exchange Based on Your Needs

Different exchanges suit different priorities. Bitbank and GMO Coin offer professional trading interfaces with order books, lower fees for active traders, and a wide range of cryptocurrencies. Coincheck provides a simpler interface favored by beginners, faster onboarding, and easy convenience store deposits, though spreads may be higher. DMM Bitcoin specializes in leveraged trading for users interested in margin positions. BitFlyer offers strong security with insurance coverage and handles both simple purchases and advanced trading.

Consider which cryptocurrencies you want to buy, as not all exchanges list the same assets. Check whether the exchange supports your preferred deposit method and whether fees fit your transaction size. Larger purchases often benefit from exchanges with tighter spreads or lower percentage fees, while smaller, infrequent purchases may prioritize convenience and interface simplicity over per-transaction costs. Security features like two-factor authentication, cold wallet storage, and insurance should factor into your decision regardless of trading style.

Security and Fund Protection

FSA regulations require exchanges to hold customer crypto assets separately from company assets and to maintain a certain level of net assets as financial backing. Most exchanges store the majority of customer funds in cold wallets (offline storage), moving only the necessary amount to hot wallets for daily withdrawals. This reduces risk from hacking. Some exchanges like bitFlyer carry insurance policies covering losses from unauthorized access or security breaches, though coverage terms and limits vary.

Enable two-factor authentication using an authenticator app like Google Authenticator or Authy rather than SMS, which is vulnerable to SIM-swap attacks. Use a strong, unique password and consider using a hardware security key if the exchange supports it. Be aware that while FSA registration reduces risk compared to unregulated platforms, no exchange is immune to security incidents. Never store large amounts on an exchange long-term; transfer significant holdings to a personal hardware wallet where you control the private keys. Phishing attempts often impersonate exchanges, so always type the exchange URL manually or use a bookmark rather than clicking links in emails.

All news →