Crypto Casinos in Japan: Law, Tax and Risks in 2026

Gambling at an online casino from Japan is a criminal offence under Article 185 of the Penal Code, and that stays true when the site holds a foreign licence and takes bitcoin, ETH or USDT instead of yen. Japan issues no online casino licences at all. The only casinos the law will allow are land-based ones inside approved integrated resorts, and the first of those, in Osaka, is not planned to open before 2030.

This page sets out what the statutes say, how the police apply them, how winnings and crypto gains are taxed, and where to get help. It does not recommend or link to any casino: since September 2025, Japanese law also prohibits steering people in Japan towards illegal online gambling sites.

Legal status at a glance

What the Penal Code says about online gambling

Japanese gambling law is old and short. Article 185 of the Penal Code (Act No. 45 of 1907) punishes anyone who gambles with a fine of up to 500,000 yen or a petty fine. A narrow exception covers stakes that are things provided for momentary entertainment, such as a round of drinks; cash and crypto do not fit it.

Article 186 goes further. A person who gambles habitually faces up to three years’ imprisonment, while someone who runs a gambling place or organises gamblers for profit faces three months to five years. Since 1 June 2025 the Penal Code uses a single custodial sentence (kokin-kei) in place of the old split between imprisonment with and without work, which is why recent official texts read slightly differently from older translations.

Where the server sits does not matter. The National Police Agency (NPA) states plainly on its online casino page that connecting from Japan to gamble is a crime even when the online casino is lawfully operated abroad. The act of betting happens where the player is, so a Curaçao or Anjouan licence protects the operator in its home jurisdiction and does nothing for a player sitting in Tokyo.

Why pachinko is not a loophole

Visitors often ask how pachinko halls can operate if gambling is banned. Pachinko parlours are licensed as amusement businesses: players win balls that the hall swaps for prizes, not cash, and separate exchange shops nearby buy those prizes. Police have long tolerated this three-step arrangement for licensed halls, but it rests on the amusement business licence and the physical premises. Nothing similar exists for online casino games, and the courts have never treated an online casino as pachinko.

The 2025 ban on promoting online casinos

In June 2025 the Diet amended the Basic Act on Gambling Addiction Countermeasures (Act No. 76 of 2025). The new rules took effect on 25 September 2025. They prohibit two things aimed at unspecified people in Japan: presenting websites or apps that offer illegal online gambling, and spreading information that induces people to use them.

According to the NPA, the ban reaches social media promotion, “recommended casino” comparison sites and affiliate advertising for online casinos. Platforms and providers can be asked to remove such content. The amendment also obliges national and local government to make sure the public knows that online casino gambling is illegal, a direct response to the NPA’s own survey finding that many users did not know.

For readers, the practical meaning is simple: a Japanese-language site ranking “the best online casinos for Japan” is itself operating against Japanese law, and its claims that play is “grey” or “legal because the licence is foreign” are wrong.

Integrated resorts: the only legal casinos to come

The Integrated Resort Implementation Act of 2018 allows a limited number of resorts with a casino floor, under licences from the Casino Regulatory Commission, an independent body set up in January 2020. Japanese residents will pay an entry levy and face visit limits. None of this covers online play: the IR law creates land-based casinos only.

The government approved Osaka’s development plan for Yumeshima island on 14 April 2023, and the operator targets an autumn 2030 opening. Until then, and outside any IR afterwards, casino gaming in Japan remains illegal whatever the format.

How enforcement works in practice

Police action against online gambling has grown sharply. The NPA reports that in 2024 it handled 62 online gambling cases and arrested 279 people, up from 13 cases and 107 people a year earlier. Of these, 55 cases and 227 arrests involved so-called “non-store” play, meaning people betting on their own phones or computers rather than in an illegal internet café.

Investigators now follow the money. The NPA says it targets payment agents, affiliates and others who profit from illegal gambling, using habitual-gambling charges and the law on concealing criminal proceeds. One case it published: a woman paid on commission by an overseas casino promoted the site on video platforms, a man she recruited gambled there habitually, and in September 2024 she was arrested for aiding and abetting his habitual gambling.

Individual players are also charged, usually with simple gambling under Article 185, which typically ends in a summary fine. Repeated, heavy play opens the door to the habitual-gambling charge under Article 186.

The scale, from the NPA’s own survey

A survey commissioned by the NPA in fiscal 2024 (about 27,000 respondents aged 15 to 79) estimated that roughly 3.37 million people in Japan had used an online casino, wagering about 1.2423 trillion yen a year. About 60% of users and former users said they were aware of having a gambling problem, and around 44% of all respondents did not know online casinos are illegal in Japan.

The researchers also examined the 40 casino sites most often featured on Japanese comparison sites. Every one held an overseas licence, about 70% of them from Curaçao, and 38 of the 40 did not clearly say that use from Japan is prohibited. Our explainer on the Curaçao Gaming Authority covers what that licence does and does not cover; protection for players in Japan is not part of it.

Before you play: betting on an unlicensed or foreign-licensed casino site from Japan is illegal under the Penal Code, even with crypto. No Japanese regulator or ombudsman can help you recover a frozen balance or settle a dispute with an offshore operator.

Why offshore sites push USDT in Japan

Reports aimed at operators describe Japan as a market where offshore casinos rely heavily on crypto, and especially on USDT sent over the Tron network, because Japanese banks and card issuers often decline payments to gambling sites. That friction is not an accident. It reflects the same law that makes the bets illegal, and the NPA has arrested payment agents who moved money for offshore casinos.

Switching to a stablecoin only removes the bank from the picture. It does not change the legal position, and it adds risks of its own: a deposit sent on the wrong network is usually lost, and a casino that freezes a USDT balance leaves you with no bank to dispute the payment. Our USDT explainer covers the networks in general terms.

Does paying in bitcoin or USDT change anything?

No. The offence is gambling for something of value, and crypto assets plainly have value. Paying with BTC, ETH or a stablecoin such as USDT changes the payment rail, not the legal analysis.

It also does not make play invisible. Most residents buy crypto at an exchange registered with the Financial Services Agency, which must verify identity and keep transaction records, and transfers on public blockchains such as Bitcoin can be traced from one address to the next. Our guide to bitcoin casino payments describes how deposits and confirmations work in general; it changes nothing about Japanese law.

There is a financial risk too. A casino that freezes a withdrawal, voids winnings under a bonus rule or simply disappears leaves a player in Japan with no local regulator to complain to, and suing an operator abroad over an unlawful bet is unrealistic.

Tax on gambling winnings and crypto gains

Winnings

Japan taxes lawful betting wins, such as horse-racing payouts, as temporary income (ichiji shotoku). Per the National Tax Agency (Tax Answer No. 1490), you take total receipts, subtract the costs directly incurred to earn them, then a special deduction of up to 500,000 yen, and only half of what remains is added to taxable income. Losing bets from other days are generally not deductible. Takarakuji lottery prizes are tax-free by statute.

Worked example. Suppose a ¥100,000 winning ticket at the races pays ¥1,500,000. Temporary income is ¥1,500,000 minus the ¥100,000 stake on that ticket minus the ¥500,000 deduction, which leaves ¥900,000. Half of it, ¥450,000, is added to your other income and taxed at your marginal rate.

Winning from an illegal activity does not make the money tax-exempt, and paying tax does not make the activity lawful.

Crypto gains

Profits from selling or spending crypto assets are currently classed as miscellaneous income (zatsu shotoku, NTA Tax Answer No. 1524). They are taxed at progressive rates together with salary, which with local inhabitant tax can reach about 55% at the top bracket, and losses cannot be set against salary income.

That is changing. In 2026 the Diet passed amendments that move crypto assets from the Payment Services Act into the Financial Instruments and Exchange Act, treating them more like securities. Separately, the government’s tax reform plan provides for a flat rate of about 20% on gains from crypto traded through registered exchanges, expected to apply from January 2028. Until that date the miscellaneous-income rules apply.

Crypto rules in Japan

Japan was one of the first countries to regulate exchanges. Since April 2017 any business that exchanges crypto assets for yen or other crypto for customers in Japan must register with the Financial Services Agency under the Payment Services Act. The Japan Virtual and Crypto Assets Exchange Association (JVCEA) acts as the self-regulatory body that sets detailed rules for members.

• Check the register. The FSA publishes the list of registered crypto-asset exchange service providers; a foreign platform not on it is not authorised to serve Japanese residents, and the FSA regularly warns against such firms.
• Custody rules. Registered exchanges must keep customer assets segregated, mostly in cold wallets.
• Coming change. The 2026 move to the Financial Instruments and Exchange Act adds insider-trading rules for crypto and heavier penalties for unregistered operators.

For background on exchanges and self-custody in general, see our crypto exchange guide and wallet guide. A casino account balance is not a wallet you control, and a crypto casino is not a registered exchange.

Help with gambling problems in Japan

Support in Japan is organised locally rather than through one national hotline.

• Mental health and welfare centres (seishin hoken fukushi center): every prefecture and designated city runs one, offering free, confidential consultation on gambling problems for players and families.
• National Center for Addiction Control and Prevention: run by the Kurihama Medical and Addiction Center for the Ministry of Health, Labour and Welfare; its site lists consultation offices and treatment facilities across Japan.
• GA Japan (Gamblers Anonymous): peer-support meetings in most prefectures; meeting lists at gajapan.jp.
• Emergencies: call 119 for an ambulance or 110 for the police.

Our responsible gambling page explains warning signs and self-help tools, and our licence overview shows why no foreign licence can stand in for Japanese law. For the wider region, compare South Korea’s gambling and crypto rules and the position in Thailand, or start from our crypto gambling guides hub.

Japan crypto casino FAQ

Is it legal to play at a crypto casino in Japan?

No. Gambling from Japan at an online casino is an offence under Article 185 of the Penal Code, punishable by a fine of up to 500,000 yen, even if the site is licensed abroad and you pay in crypto. Habitual gambling under Article 186 can bring up to three years in prison.

Is online gambling legal in Japan for foreigners?

No. The Penal Code applies to anyone in Japan, so tourists and foreign residents who bet at an online casino from Japan commit the same offence as Japanese citizens.

Is pachinko gambling in Japan?

Legally, no. Pachinko halls are licensed as amusement businesses and pay out prizes rather than cash; separate shops buy the prizes. This arrangement does not extend to online casinos.

Can you be arrested for online gambling in Japan?

Yes. The National Police Agency reports 279 arrests in 62 online gambling cases in 2024, most of them involving people betting from their own phones or computers. Players, payment agents and paid promoters have all been charged.

Are online casinos legal in Japan if they have a Curaçao licence?

No. A foreign licence only matters in the country that issued it. The National Police Agency says that connecting from Japan to gamble is a crime even when the casino is lawfully operated overseas.

When will Japan have a legal casino?

The first integrated resort with a casino is planned for Yumeshima in Osaka, with an opening targeted for autumn 2030. It will be a land-based casino; online casinos remain illegal.

Do you pay tax on gambling winnings in Japan?

Lawful winnings such as horse-racing payouts are temporary income: after a special deduction of up to 500,000 yen, half of the remainder is taxed with your other income. Takarakuji lottery prizes are tax-free.

How is cryptocurrency taxed in Japan?

Crypto gains are currently miscellaneous income taxed at progressive rates that can reach about 55% with local tax. A flat rate of about 20% for crypto traded through registered exchanges is expected from January 2028.

Where can I get help for a gambling problem in Japan?

Contact the mental health and welfare centre in your prefecture or city, search the consultation offices listed by the National Center for Addiction Control and Prevention, or join a GA Japan meeting.