How to get Japan citizenship as an investor: residence first, naturalisation after about 10 years

No. Japanese nationality can be acquired in only three ways: by birth to a Japanese parent, by notification in a few narrow family cases, or by naturalisation with the Minister of Justice's permission^[2]. The Nationality Act contains no investment criterion. The only exception to the normal conditions is Article 9, which lets the Minister naturalise a foreigner with "special merit" to Japan. That requires Diet approval and is not a channel an investor can apply through^[2]. Any agent selling "Japan citizenship by investment" is selling residence, not a passport.

Investment does help in one way. It gives you a lawful, renewable status of residence, and naturalisation requires years of continuous domicile in Japan. For most non-Japanese investors that status is Business Manager (keiei-kanri), which means running a real company in Japan. Japan has no passive "buy property, get a visa" option. Owning real estate gives you no right to live there, and the January 2026 policy package points towards closer checks on foreign land and property purchases, not easier access^[20].

So the realistic path is: found or buy into a Japanese business, live in Japan under Business Manager status, keep a clean tax and social-insurance record for about ten years, then apply for naturalisation and renounce your current citizenship. If keeping your passport matters, compare passport-led options in our guide to citizenship by investment versus residence by investment.

The amended landing-standards ordinance for Business Manager was promulgated on 10 October 2025, and the new criteria took effect on 16 October 2025^[5][6]. The applicant must now show all of the following:

• Capital of ¥30 million or more. For a company this is the stated capital or the total investment. For a sole proprietor it is the total investment the business needs to operate^[5][21].
• At least one full-time employee who is a Japanese national, special permanent resident, or holder of a Table 2 status such as permanent resident or spouse of a Japanese national. Work-visa holders do not count^[5][6].
• Japanese at CEFR B2 level (for example JLPT N2 or BJT 400+), held by the applicant or by the full-time employee^[5][6].
• A doctoral, master's or professional degree in business management or the relevant field, or at least three years of management experience^[5].
• A business plan reviewed by a professional: a certified public accountant, licensed tax accountant or certified SME consultant^[5][6].
• Real premises. Virtual offices and nominal addresses are not accepted^[6].

Existing holders have a transition period. Renewals filed before 16 October 2028 can still be approved below the new thresholds. From that date the full criteria apply, although ISA has said it may still extend a holder whose company is financially sound, tax-compliant and on track to meet the criteria at the next renewal^[6][21]. Note what the ¥30 million is. It is working capital in your own business, not a fee or a donation. It is not locked up either, but the company has to be visibly operating and able to pay its employee and its taxes every time the status is renewed.

Fuller detail on company formation, office rules and renewals is in our Japan investor residence guide. If you would prefer a passive investment in the region, Malaysia's MM2H tiers, Thailand's long-stay residence and South Korea's property-based F-2 residence need no operating company, but none of them leads quickly to a passport.

Article 5 of the Nationality Act sets six conditions. The Ministry of Justice summarises them in its official Q&A^[1][2]:

1. Residence: continuous domicile in Japan for 5+ years with a valid status of residence. Since 1 April 2026 the Ministry's own guidance says applicants generally need 10 years or more of residence, together with daily-life Japanese, to show integration^[1][3].
2. Age and capacity: 18 or older (lowered from 20 in April 2022) and of legal capacity under your home country's law^[1].
3. Good conduct: criminal record, traffic offences, and above all tax and social-insurance compliance. The review now covers 5 years of resident-tax certificates (previously 1) and 2 years of pension and health insurance records (previously 1)^[3][4].
4. Livelihood: you or your household can support yourselves from assets or skills. This is assessed for the household, not the individual^[1].
5. Single nationality: you must be stateless or lose your current nationality on naturalising. Article 5(2) allows an exception only where your home country's law makes renunciation impossible^[1][2].
6. Constitutional loyalty: no advocacy of the violent overthrow of the government^[1].

Japanese language. Neither the Act nor any published rule sets a test level. The Ministry says applicants need enough Japanese for daily life, both spoken and written^[1]. In practice the Legal Affairs Bureau tests this at interview and through a handwritten statement of motivation in Japanese. Practitioners put the working standard at roughly JLPT N3, or about third- to fourth-grade primary-school Japanese^[19]. Investors who meet the Business Manager language rule through an employee, not themselves, should plan on years of study before applying.

Discretion and no appeal. Naturalisation is a ministerial permission, not an entitlement. Practitioners note that a refusal cannot be challenged through administrative appeal; the only option is a new application^[4].

A Business Manager holder's spouse and children can live in Japan on Dependent status. Each person pays the same visa issuance and extension fees as the main applicant^[8][12]. Their residence years count towards their own naturalisation.

Each family member naturalises in their own right, but the Act makes the process easier once one of you is Japanese:

• Spouse: under Article 7, the foreign spouse of a Japanese national may naturalise after 3 years of residence, or 1 year of residence once married for 3 years. The adult-age and 5-year residence conditions are waived^[2]. In practice, couples who arrived together usually apply at the same time.
• Children: under Article 8, a child of a Japanese national who lives in Japan does not need to meet the residence, age or livelihood conditions^[2]. Children under 15 apply through a parent or other legal representative^[1].

Children who end up holding two nationalities, for example through birth abroad to a Japanese parent, must choose one by age 20 under Article 14. If they acquire the second nationality after turning 18, they must choose within two years^[2].

The statutory answer is still five years of continuous domicile^[2]. The administrative answer since 1 April 2026 is ten. On its naturalisation Q&A page the Ministry of Justice now says applicants must be integrated into Japanese society, citing as examples "Japanese sufficient for daily life" and "residence of 10 years or more"^[1]. The change was made through screening practice, not by amending the Act. It was reported in late March 2026 and took effect on 1 April 2026^[3]. Practitioners report that it also applies to applications filed before April and still pending^[4].

"Continuous" matters. Long trips abroad can break the residence count. The Bureau has published no fixed limit on absences, so long or frequent trips are a real risk. Investors who run businesses in several countries need to plan for this from the start.

Processing comes on top. One Tokyo firm quotes about 6–12 months from filing to decision^[18]. Another practitioner reports 10–14 months of examination after 6–12 months of document preparation, and puts the whole process at 1.5 to 3 years^[19]. A realistic plan for a Business Manager investor is therefore 11–13 years from arrival to passport.

Income tax. Japan's national income tax tops out at 45% above ¥40 million. A 2.1% reconstruction surtax applies on top, and local inhabitant tax adds a flat 10%^[13]. A foreigner who has lived in Japan for no more than 5 of the past 10 years is a non-permanent resident for tax purposes. Foreign-source income is then taxed only when paid in or remitted to Japan. After that, worldwide income is taxed^[13]. Because naturalisation now takes about ten years, every investor on this path becomes a fully taxable resident long before they qualify.

Inheritance and gift tax runs up to 55%^[14]. Foreigners on a Table 1 status such as Business Manager are protected for overseas assets as long as they have lived in Japan for no more than 10 of the last 15 years. That protection ends when you take a Table 2 status such as permanent residence, and in any case when you become a Japanese national^[14]. Naturalisation therefore brings your worldwide estate into Japanese inheritance tax, and your heirs' too, whatever their residence, for years afterwards.

Exit tax. If you leave Japan after being resident for more than 5 of the previous 10 years and hold ¥100 million or more in securities and similar assets, unrealised gains are taxed as if sold. Income tax of 15.315% applies, and deferral is available in some cases^[15]. Years spent on a Table 1 status such as Business Manager are excluded from that count under Article 170(3) of the Income Tax Act Enforcement Order, so exposure normally starts once you hold a Table 2 status such as permanent residence^[15]. Take cross-border tax advice before switching.

Naturalisation does not require permanent residence. Many investors still get permanent residence first, because it ends the need to keep the company running for each renewal. The standard rule is 10 years of residence, at least 5 of them on a working or residential status. Highly Skilled Professionals qualify after 3 years with 70 points or 1 year with 80 points^[7][10]. Business Manager holders applying for permanent residence are also checked against the October 2025 criteria^[7].

Permanent residence has become harder and dearer too. The fee went up to ¥200,000 on 1 October 2026^[8]. ISA's revised guidelines, published on 1 October 2026, test whether income is above the average for Japanese households, and this applies to applications filed from 1 April 2026 that were still pending. From April 2027 they add a projected-pension test, roughly equal to 30 years in the employees' pension scheme, with any shortfall covered by financial assets. Japanese at an "independent user" level (reported as about CEFR B1) will also be required^[9][11]. If you will be checked against a ten-year residence standard and a Japanese-language standard either way, naturalisation may be the simpler goal. It also brings voting rights and freedom from renewals, at the cost of your other passport.

Japan does not allow adults to hold dual nationality by choice. A naturalisation applicant must lose their current nationality (Article 5(1)(v))^[2]. A Japanese national who voluntarily acquires another nationality loses Japanese nationality automatically (Article 11)^[2]. People who are dual nationals from birth must choose by age 20, and a person who opts for Japan must then "endeavour" to give up the other nationality (Articles 14 and 16)^[2].

Japanese courts have repeatedly upheld the ban. Most recently, on 26 May 2025 the Supreme Court's First Petty Bench rejected the appeal of a woman who lost her Japanese nationality after becoming a US citizen in 2004^[16]. For investors the effect is plain. Becoming Japanese means renouncing your US, EU, UK or other citizenship. For US citizens that means a formal renunciation and possibly the US expatriation tax. If you want to keep your current passport, see our guide on holding two or three citizenships and choose a country that allows it.

Japan's passport is one of the strongest in the world. In the July 2026 Henley Passport Index it ranks joint second, with visa-free or visa-on-arrival access to about 188 destinations. Some outlets give 187 because they quote a different edition of the index^[17]. Japanese nationals also gain full voting rights, unrestricted work and residence, and an end to residence-card renewals.

No foreigner can obtain a Japanese passport without first becoming a Japanese national. There is no residence-based or honorary passport. The passport is issued only after the naturalisation is published in the Official Gazette and you are entered in a family register^[2][19]. Compared with the passports on offer in our ranking of the strongest passports available through investment, Japan's mobility is better, but it takes roughly ten years longer to get and costs you your existing citizenship.

• April 2027 permanent residence rules: the pension and Japanese-language tests start. Practitioners also report that the spouse-of-a-Japanese route to permanent residence moves to 5 years of marriage plus 3 years' residence, and that a 3-year period of stay will no longer count as the "maximum" for permanent residence^[7][11]. ISA had not published the exact language benchmark in English when we checked.
• 16 October 2028: the end of the Business Manager transition. Pre-2025 companies with ¥5 million of capital must recapitalise to ¥30 million or risk losing renewals^[21].
• Nationality Act amendment: the 10-year expectation is administrative. Whether the government writes it into the Act, or adds a formal language test, is unconfirmed.
• Real estate: the January 2026 package flagged closer checks on foreign land purchases and beneficial ownership. No details or dates have been published^[20].

It suits entrepreneurs who actually want to live in Japan, run a business there, learn the language and raise a family there, and who are prepared to give up their current citizenship after a decade. For them the ¥30 million threshold is small next to the cost of living, and the passport at the end is excellent.

Look elsewhere if you want a second passport as a hedge or a plan B, if you will not live in Japan most of the year, if you need to keep your current nationality, or if you want a passive investment with no company to run. None of these fit Japan's model.

• New Zealand's investor path to citizenship goes from the Active Investor Plus visa through residence and permits dual nationality. The capital required is much higher.
• Singapore's Global Investor Programme and Hong Kong's capital investment entrant scheme give residence in Asian financial hubs. Like Japan, Singapore does not allow dual citizenship.
• Taiwan's investor residence route and Korea's investor and property-based residence are the nearest regional peers to Japan's business route.
• The Philippines and Indonesia also offer residence without citizenship by investment, at lower cost.
• If a passport is the real goal, a citizenship-by-investment country such as Vanuatu or Turkey's property-based citizenship delivers one in months, with no residence requirement.
• Compare timelines across countries in our guide to residence programmes with the fastest route to citizenship and in the citizenship by investment hub.