Japan cryptocurrency tax guide

What this guide covers

This guide covers Japan's general approach to individual cryptocurrency taxation for the 2025 tax year, based on secondary sources citing NTA guidance, plus the NTA's own current guidance document, identified by its exact title and revision date. NTA's own page, Tax Answer No. 1525, wasn't directly fetched in this research pass. This is educational information, not individualized tax advice.

Tax treatment of cryptocurrency

Japan taxes your crypto gains at progressive rates alongside your other income — often a less favorable treatment than how Japan taxes listed securities. Here's why: Japan treats gains from selling, trading, swapping, or otherwise disposing of cryptocurrency as "miscellaneous income" (zatsu shotoku) under the Income Tax Act. That's materially different from the flat 20.315% rate Japan applies to gains from listed securities, which fall under a separate "transfer income" category that reportedly doesn't include crypto. The NTA's own current guidance document, last revised 26 December 2025, adds one more wrinkle: even if you keep proper transaction records, whether your crypto activity instead counts as business income still requires individual, case-by-case judgment. Recordkeeping alone doesn't settle the classification.

Common taxable events

• Selling crypto for Japanese yen.
• Swapping one cryptocurrency for another — treated as a disposal of the asset given up.
• Spending crypto on goods or services — treated as a disposal at its value at the time.
• Mining and staking rewards, and crypto received as payment for work — taxed as miscellaneous income (or business income, if conducted as a business) at the value received.

Potentially non-taxable events

• Buying and holding crypto without disposing of it — not taxable.
• Wallet-to-wallet transfers between your own wallets — this guide didn't find clearly confirmed, official guidance here. Treat this as unresolved pending direct confirmation, rather than assuming it's exempt.

Tax rates and thresholds

Your miscellaneous income from crypto is taxed at Japan's progressive national income tax rates — reported ranging from 5% at the lowest bracket to 45% at the top bracket, for income over roughly JPY 40 million — plus a flat 10% resident tax. Combined, that's a reported maximum of approximately 55% at the highest bracket. This guide doesn't reproduce the full intermediate bracket table; confirm current brackets on nta.go.jp. Secondary sources report a proposed reform that would introduce a flat ~20% rate for some crypto assets starting around 2026-2027. This guide treats that as an unenacted proposal, not current law, since it wasn't independently confirmed against an official source or the current tax reform outline.

Cost basis and calculation

Your gain is disposal proceeds minus acquisition cost, under the miscellaneous-income category. This guide didn't independently verify which cost-basis identification method — moving-average or FIFO-equivalent conventions are commonly discussed for Japanese crypto tax filings — is the current official default. Confirm directly with the NTA or a Japanese tax professional before relying on a specific method. Losses from crypto transactions are reported as unable to be carried forward to future years or offset against other income categories under current rules. This guide didn't independently confirm that against an official source.

Reporting and compliance

• Miscellaneous income from crypto is reported on the individual's annual final income tax return (kakutei shinkoku).
• This guide does not independently confirm the current filing deadline or specific form/schedule details for the 2025 tax year — confirm directly with the NTA.

Residency and cross-border issues

Your Japanese tax residency status governs whether your worldwide crypto gains fall within this regime. Using a non-Japanese exchange doesn't, by itself, change this for a resident taxpayer. This guide doesn't cover non-resident-specific rules or double-taxation treaty interactions in depth.

Example

This example is hypothetical, for illustration only. Haruto has JPY 5 million in salary income and realizes a JPY 2 million crypto gain in the same year. The crypto gain is miscellaneous income added to his total income, not a separate flat-rate category, so it's taxed at his marginal progressive rate on top of his salary — potentially a materially higher rate than the 20.315% flat rate that would apply if the same JPY 2 million gain came from selling listed shares instead.

Official resources

• National Tax Agency (NTA): https://www.nta.go.jp/

Limitations and review information

Tax year covered: 2025. Last verified: October 10, 2026, against the NTA's own current information document, identified by its exact title and 26 December 2025 revision date via a real nta.go.jp page fetch. Remaining gap: the document's full paragraph text, including the exact progressive bracket table, was not read directly in this pass. The reported 2026/2027 flat-rate reform proposal is explicitly unverified and should not be relied upon as current law. This is educational information only, not individualized tax advice — consult the NTA or a qualified Japanese tax professional for your specific situation.