When does Japan's 20% crypto tax start?
The short version: not before January 1, 2028. The flat rate is real and it is law. It was written into the Act on Partial Amendment of the Income Tax Act, etc. (Act No. 12 of 2026), promulgated on March 31, 2026, which added two new articles to the Act on Special Measures Concerning Taxation: Article 38-2 for separate taxation分離課税 (bunri kazei): one kind of income is taxed on its own at a flat rate instead of being added to your salary and other income. Listed share gains already work this way. of crypto gains and Article 38-3 for carrying losses forward.
What the law does not contain is a calendar date. According to the Ministry of Finance's FY2026 tax reform outline, the new rules apply from "January 1 of the year following the year in which the amended Financial Instruments and Exchange Act takes effect". In other words, the tax change waits for a separate law that moves crypto out of the Payment Services Act and into the Financial Instruments and Exchange Act (FIEA), Japan's securities-style rulebook.
That FIEA amendment was enacted on July 15, 2026 and promulgated on July 23, 2026; the FSA confirms that some penalty provisions took effect "20 days after promulgation", on August 12. The crypto provisions themselves take effect on a date set by cabinet order within one year of promulgation, so by about July 22, 2027 at the latest. If that happens in 2027, the 20% rate starts on January 1, 2028.
Two caveats. First, 2028 is our arithmetic from the legal text, not a date the government has announced; no cabinet order fixing the FIEA start date had been published at the time of writing. Second, if the order had set a date in 2026, the start would be January 2027, but with only weeks of 2026 left that is not a realistic scenario.
Timeline: from tax outline to the first 20% tax year
Here is every milestone so far, plus the ones still to come (grey dots have no fixed date yet).
- December 26, 2025Cabinet approves the FY2026 tax reform outline It sets out 20% separate taxation for specified crypto assets and a three-year loss carryforward, conditional on the FIEA reform.
- March 31, 2026Act No. 12 of 2026 promulgated Articles 38-2 and 38-3 are added to the Special Measures Concerning Taxation Act.
- April 10, 2026FIEA amendment bill goes to the Diet It moves crypto from the Payment Services Act into the Financial Instruments and Exchange Act.
- July 15, 2026FIEA amendment enacted Insider-trading rules and disclosure duties will apply to crypto.
- August 12, 2026First provisions in force Tougher penalties for unregistered operators and new criminal investigation powers for the securities watchdog.
- By about July 2027 (cabinet order)Crypto provisions of the FIEA take effect Exchanges become "crypto-asset trading businesses" under the FIEA.
- January 1, 2028 at the earliest20.315% separate taxation begins (our estimate) Applies to sales of specified crypto assets from that date.
- The following yearExchanges start reporting to the tax office Name, address, My Number and the tokens traded, filed by January 31 each year.
For the regulatory side of the FIEA move, including insider-trading rules and exchange reserves, see is crypto legal in Japan.
Why so many sites say "20% from 2026"
Search for Japan's crypto tax rate and you will still find pages saying the 20% rate started in 2026. It didn't, and the reason for the mix-up is mostly in the name. The package is officially the "FY2026 tax reform" (令和8年度税制改正). In Japan the fiscal-year label refers to the budget cycle in which the change was decided, not to when each measure applies; every item has its own start rule.
Add the fact that the law was promulgated in March 2026, and some 2025 news stories that floated 2026 as a possible start were never updated. The practical risk is real: if you sold a large position in 2026 expecting a 20% bill, the return you file in February or March 2027 will use the progressive rates. How that works, with worked examples, is in our Japan crypto tax guide.
What changes, side by side
After the start date, the same coin can be taxed two different ways depending on what it is and where you sell it. Sales of specified crypto assets through a registered exchange get the flat rate; everything else becomes ordinary capital gains under progressive taxation, with fewer reliefs than other assets get.
| What changes | Today (until the 2027 tax year) | After: specified crypto sold via a registered exchange | After: all other crypto |
|---|---|---|---|
| Income category | Miscellaneous income (business income possible above ¥3m revenue with books) | Separately taxed capital gains | Comprehensively taxed capital gains (frequent trading may stay miscellaneous or business income) |
| Rate | 5–45% national + 10% resident (up to about 55%) | Flat 20% (15% national + 5% resident; 20.315% with surtax) | 5–45% national + 10% resident |
| Loss carryforward | None | 3 years, subject to conditions | None |
| Offset against other income | Not allowed | Calculated separately from other income | Not allowed (stated in the reform) |
| ¥500,000 special deduction and half-taxation after 5 years | Not applicable | Not applicable | Explicitly denied |
The 20% splits into 15% national income tax and 5% resident tax, and the 2.1% surtax on the national part brings it to 20.315%, the same rate as listed share gains. From the 2027 tax year the reconstruction surtax is restructured and a defense surtax added, but the NTA says the combined rate is unchanged.
A flat rate is great news for high earners. It is not automatically better for everyone: if your total taxable income sits in the 5% or 10% bracket, today's combined marginal rate (about 15.1% or 20.2%) is at or below 20.315%. Separate taxation is not optional, so you cannot pick whichever is cheaper.
Which coins count as "specified crypto assets"?
The outline defines specified crypto assets特定暗号資産: crypto entered on the register kept under the amended Financial Instruments and Exchange Act, which in practice means tokens handled by registered Japanese exchanges. as crypto registered in the register of financial instruments business operators under the amended FIEA. Only transfers of those coins to, or through, a registered crypto-asset trading business qualify for the 20% rate.
Put simply, two conditions must both be met: the coin is handled by a registered Japanese exchange, and you sell it on a registered Japanese exchange. Today's FSA-registered exchanges will move into the new FIEA framework when it takes effect. That leaves several situations outside the 20% regime:
- Selling on an offshore exchange. Many have been warned by the FSA or have left Japan; see offshore exchanges and Japan.
- Swapping on a DEXDecentralised exchange: a smart-contract marketplace where users trade directly from their own wallets, with no company in the middle. or selling peer to peer.
- Selling a token that no registered Japanese exchange lists.
- Disposing of crypto without a registered exchange in the middle, such as paying a merchant directly from your wallet.
The outline says nothing about bringing staking or lending rewards into the flat-rate system. Assume rewards stay taxable as miscellaneous income when received. Since the register will only exist once the FIEA provisions are in force, checking now whether your coins are listed on a Japanese exchange is the best proxy.
The three-year loss carryforward
The second big change is a loss carryforwardCarrying an unused loss into later years so it reduces future taxable gains. Japan already allows three years for listed shares and FX.. If you lose money selling specified crypto assets to or through a registered exchange, and the loss is more than your specified crypto gains that year, the remainder can be deducted from specified crypto gains in the following three years, subject to conditions.
Example: a ¥1 million loss on specified crypto in 2028, then a ¥1.5 million gain in 2029. In 2029 you would pay 20.315% on ¥500,000 instead of ¥1.5 million. Under today's rules, that 2028 loss would simply vanish.
Two limits matter. The carryforward only covers losses on sales made on or after the start date, so losses from 2026 and 2027 cannot be brought into the new system. And the outline only lets losses reduce gains from specified crypto assets; it does not say they can be offset against listed shares or funds. The exact conditions, such as whether you must file every year, will be set in later regulations.
Stricter rules for everything else
The reform also tightens the treatment of crypto that does not qualify. According to the NTA's reform summary, non-specified crypto, and specified crypto not sold through a registered business, become ordinary capital gains譲渡所得 (joto shotoku): income from selling an asset. It normally gets a ¥500,000 special deduction and half-taxation after five years, but not for crypto under the reform. under progressive taxation. Habitual trading for profit can still be miscellaneous or business income.
Capital gains on most assets in Japan come with reliefs. For crypto, the reform switches all three off:
- No special capital-gains deduction of up to ¥500,000
- No halving of long-term gains on assets held more than five years
- No offsetting of losses against other comprehensively taxed income
So gains on offshore exchanges or DEXs stay exposed to rates of up to about 55%, with no relief for losses. If you live in Japan and hold coins abroad, that is one more reason to plan how and where you will sell. Moving coins to a Japanese exchange runs into Travel Rule checks; see crypto wallets in Japan for which transfers exchanges accept.
Derivatives, investment trusts and ETFs
Crypto derivatives on specified crypto assets will join the same separate-taxation regime and loss carryforward that already covers FX and futures, for settlements made from the start date. Today, crypto margin trading is taxed progressively, unlike FX (NTA FAQ 2-12), so this is a meaningful change for leveraged traders.
The outline also brings investment trusts that invest in specified crypto assets into the "general shares" tax regime. That part depends on a separate amendment to the enforcement order of the Investment Trust Act, and at the time of writing there was no official timetable for spot crypto ETFs or funds being sold in Japan.
Sell now or wait for 2028? Four scenarios
If you are sitting on large unrealised gains, the obvious question is whether to sell in 2026–2027 or hold until the new rate applies. The table compares tax at today's rates (2026 bracket table, deductions held constant) with 20.315% on the same profit, assuming the coins are specified crypto sold through a registered exchange. This is an illustration, not investment advice.
| Scenario | Sell under today’s rules | Sell at 20.315% | What it shows |
|---|---|---|---|
| A: taxable income ¥7m, profit ¥3m | ≈ ¥1.107m | ≈ ¥609,000 | About ¥500,000 less, but a fall of about 6% in price wipes that out |
| B: ¥5m salary employee, profit ¥1m | ≈ ¥193,000 | ≈ ¥203,000 | No tax advantage in waiting; today is slightly cheaper |
| C: taxable income ¥1m, profit ¥0.5m | ≈ ¥76,000 | ≈ ¥102,000 | People in the 5% bracket pay less under today’s rules |
| D: sitting on a loss | Loss cannot offset other income or carry forward | Loss may be carried forward 3 years | Better treatment later, but only for losses realised after the start date |
Scenario A is where waiting looks attractive. But put numbers on the price risk: a position worth ¥10 million with a ¥7 million cost nets about ¥8.89 million after tax if sold today. Waiting for the flat rate only leaves you ahead if the price falls by less than about 6.2% in the meantime. Add the uncertainty over the exact start date and over whether your coin ends up on the register, and the trade-off is narrower than headlines suggest.
In scenarios B and C there is no tax reason to wait. If anything, taking profits in slices across tax years so they stay in the 5% or 10% brackets can make more sense. In scenario D, the carryforward helps, but only for losses realised after the start date.
The estimator below starts with scenario A (¥7 million of other taxable income plus ¥3 million of profit). Put in your own figures to compare today's progressive tax with the flat rate.
↑ The calculator is at the top of this page. Plug in your own numbers.
What it means if you're a foreign resident, or planning to leave
The new rules apply to residents of Japan, regardless of nationality. If you are a non-permanent resident (in Japan for five years or less out of the last ten, and not a Japanese national), your taxable base is narrower under the general rules, but whether crypto gains fall outside it is far from settled; our guide to moving to or leaving Japan with crypto explains why caution is needed.
If you plan to leave before 2028, the reform may never affect you. The NTA's crypto FAQ says a non-resident who sells crypto held at a Japanese exchange does not need to file in Japan, because that income is not Japan-source. Your new country of residence may see it differently, and Japan's exchanges generally serve Japan residents only, so the timing of sales around a move deserves careful planning. Japan's exit tax currently does not list crypto among the assets it covers.
For opening and keeping an account as a foreign resident, including the CARF tax-residence form every exchange now asks for, see crypto for foreigners in Japan.
How to prepare now
None of this requires action today, but a little preparation makes both your 2026–2027 returns and the switch easier.
- Assume 2026 and 2027 gains are taxed progressively, and plan the size and timing of any sales with that in mind
- Check whether your coins are listed on a registered Japanese exchange
- If you hold coins offshore or in a wallet, confirm you can move and sell them through a Japanese exchange
- Keep every annual transaction report and CSV export so you can prove your cost basis
- Submit the CARF self-certification your exchange asks for by its deadline
- Watch for the cabinet order fixing the FIEA start date, and for NTA guidance on the details
Before moving large amounts, talk to your tax office or a tax accountant who knows crypto. Free options, including the NTA phone line, are listed in our tax guide.
Japan 20% crypto tax: FAQ
When does the 20% crypto tax start in Japan?
No official start date has been announced. The law applies the 20.315% rate from January 1 of the year after the amended Financial Instruments and Exchange Act takes effect for crypto, which must happen by about July 2027. That makes January 1, 2028 the earliest realistic start, by our reading of the law.
Is Japan crypto tax 20% in 2026?
No. Gains made in 2026 and 2027 are taxed as miscellaneous income at progressive rates of up to about 55%. The confusion comes from the reform being called the "FY2026 tax reform" and from the law being promulgated in March 2026, not from the rate applying in 2026.
Which coins qualify for the 20% rate?
Only "specified crypto assets": coins listed on the register kept under the amended Financial Instruments and Exchange Act, in practice tokens handled by registered Japanese exchanges, and only when you sell them to or through a registered exchange. Sales on offshore exchanges, DEXs or peer to peer stay under progressive taxation.
Can I carry my 2026 or 2027 crypto losses into the new system?
No. The three-year carryforward covers losses on specified crypto assets sold on or after the start date. Under the current rules, crypto losses cannot be carried forward at all.
Does the 20% rate apply to foreigners living in Japan?
It applies to residents of Japan regardless of nationality, as long as the conditions are met. Non-permanent residents have a narrower tax base under general rules, and non-residents are generally not taxed in Japan on crypto they sell through a Japanese exchange, according to the NTA crypto FAQ. If your status may change before 2028, get advice.
Will I still need to file a tax return under the 20% system?
Plan on it. The government outline does not describe a withholding account like the special accounts used for listed shares; it does create a duty for exchanges to report customer transactions to the tax office. The detailed rules are still to come.
How to read this page
This is a general explanation based on Act No. 12 of 2026 and published material from the Ministry of Finance, the NTA and the FSA. Dates that depend on a cabinet order are not final, and we update the page when new announcements appear. It is not tax or investment advice.
Sources
- Ministry of Finance: FY2026 tax reform outline, financial and securities taxation (Japanese)
- NTA: Summary of the FY2026 tax reform (Japanese)
- FSA: Bills submitted to the 221st Diet (Japanese)
- FSA: Explanatory material for the FIEA and PSA amendment bill (Japanese)
- FSA: Cabinet order for provisions in force 20 days after promulgation (Japanese)
- NTA: Tax treatment of crypto-assets (FAQ) (Japanese)
Keep reading
Japan crypto tax guide
How miscellaneous income tax works, with yen examples
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Moving to or leaving Japan with crypto
Residency status, exit tax and closing accounts
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Is crypto legal in Japan?
FSA, JVCEA, the Bank of Japan and the new law
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FSA-registered exchanges list
Every licensed operator with registration number and what it offers
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Offshore exchanges and Japan
Who left, who was warned, how to move funds
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Crypto for foreigners in Japan
Visas, residence cards, US persons and tourists
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