Buying Bitcoin typically involves opening an account on a cryptocurrency exchange, depositing Japanese yen, and placing an order. As of , major domestic exchanges allow you to open an account via their smartphone apps in just a few minutes, with multiple funding options available such as bank transfers and convenience store deposits. However, since Bitcoin prices are highly volatile and there is a risk of losing your principal investment, it is wise to start with a small amount using surplus funds. This article explains the basic steps from opening an account to purchasing and storing Bitcoin, along with key precautions every beginner should know.
Step 1: Choose an Exchange
To buy Bitcoin, you first need to open an account with a cryptocurrency exchange. There are multiple exchanges available domestically, differing in fees, listed assets, security measures, and the availability of Japanese support. Beginners are advised to choose a domestic exchange registered with the Financial Services Agency (FSA) for peace of mind. While some exchanges allow account opening as quickly as the same day, preparation of identity verification documents is required.
When choosing an exchange, compare the following points:
- Trading fees (maker/taker fees for spot trading)
- Spreads (price differences) between sales offices and exchanges
- Deposit methods and withdrawal fees
- Security (two-factor authentication, cold wallet management, etc.)
- Support system (inquiry response, availability of Japanese)
Fee rates can change depending on the timing and campaigns, so be sure to check the latest information on the official website.
Step 2: Account Opening and Identity Verification
Apply for an account through the exchange's website or app. The general process is as follows:
- Create an account using your email address or phone number
- Upload identity verification documents (such as a driver's license or My Number card)
- Once verification is complete, log in and set up two-factor authentication
Identity verification is usually completed within a few hours to a few days, but it may take longer during peak times. Once the review is complete, you will be able to deposit Japanese Yen.
Step 3: Deposit Japanese Yen
The primary methods for depositing Japanese Yen into an exchange include bank transfers, convenience store deposits, and Quick Deposit (instant deposit). Bank transfers may incur fees, while convenience store deposits allow you to pay with cash. Since deposit methods and fees vary by exchange, be sure to verify them in advance.
Once the deposit is reflected, you will be ready to make a purchase.
Step 4: Buy Bitcoin
On exchanges, you can primarily buy Bitcoin through two methods: the "Sales Office" and the "Exchange."
- Sales Office: A method where you purchase at the price quoted by the exchange. It is simple even for beginners, but the spread (the difference between the buy and sell prices) tends to be wider.
- Exchange: A method where trades are matched between users. This allows you to place limit orders while viewing the order book, often resulting in narrower spreads, though it requires familiarity with the interface.
When purchasing, you place an order to "Buy Bitcoin" using Japanese Yen. You can specify either the quantity or the total amount. Due to high price volatility, setting a target price via a limit order is also a viable strategy.
Step 5: Store Securely
While you can leave your purchased Bitcoin in the exchange's wallet, "self-custody" is recommended to mitigate risks such as hacking or exchange insolvency. Self-custody options include hardware wallets (such as Ledger or Trezor) and software wallets (mobile apps).
Hardware wallets are considered highly secure because they manage private keys offline. However, if you lose your private keys, you will no longer be able to access your Bitcoin, so be sure to store your backups in a safe location.
Key Considerations and Risks
Bitcoin investment carries the following risks:
- Price Volatility Risk: Bitcoin prices can fluctuate significantly over short periods, potentially resulting in a loss of principal.
- Exchange Risk: If an exchange is hacked or collapses, deposited assets may be lost.
- Regulatory Risk: Trading may be restricted due to changes in regulations across different countries.
- Taxes: Profits from selling Bitcoin are taxed as "miscellaneous income." Filing a tax return may be required.
Additionally, trading availability and tax systems vary by country and region, so please verify the rules applicable in your country of residence.
Summary
Purchasing Bitcoin involves a sequence of steps: opening an exchange account, depositing funds, placing an order, and securing your holdings. Beginners should start with small amounts to familiarize themselves with the exchange's features. Additionally, since Bitcoin prices are highly volatile, only invest funds you can afford to lose and make decisions at your own risk.
If you are unsure which exchange to choose, please refer to our Cryptocurrency Exchange Comparison.
Risks and Disclosures
Risk: Cryptocurrencies are highly volatile, and there is a risk of losing your principal. This article provides general information based on data as of 2026-08-15 and does not constitute investment solicitation, advice, or a recommendation for specific assets. Trading eligibility and tax regulations vary by country/region; therefore, please be sure to verify the regulations in your country of residence and the latest terms of each exchange before trading.
Affiliate Disclosure: This article may contain advertising (affiliate) links, through which our site may earn compensation at no additional cost to you. Such compensation does not influence our evaluation content.
Frequently Asked Questions
What do I need to buy Bitcoin?
To buy Bitcoin, you need to open an account on a cryptocurrency exchange. You'll need a government-issued ID (such as a driver's license or My Number card) and a bank account or convenience store payment method to deposit Japanese yen. Account opening can be completed in as little as a few minutes.
Where can I buy Bitcoin?
You can buy Bitcoin on domestic cryptocurrency exchanges (e.g., Coincheck, SBI VC Trade, bitbank). Fees and services vary by exchange, so compare them to choose the best one for you.
What are the fees for buying Bitcoin?
Fees vary by exchange and purchase method (over-the-counter vs. exchange). Over-the-counter services charge a spread, while exchanges charge trading fees. Check each exchange's official website for exact rates.
How is Bitcoin taxed?
In Japan, profits from selling Bitcoin are treated as "miscellaneous income" and subject to comprehensive taxation. If your profit exceeds 200,000 yen, you must file a tax return. Tax rates are progressive and combined with other income. Consult a tax accountant or the National Tax Agency for details.
How can I store Bitcoin securely?
Self-custody, where you manage your private keys, is considered safer than leaving funds on an exchange. Use a hardware wallet or software wallet and keep backups of your private keys in a secure location.
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