Residence-based eligibility, residence-card and My Number requirements, nationality restrictions, online vs postal opening, language, and leaving Japan.
A qualifying foreign resident can open NISA — eligibility is residence-based, not nationality-based — with a residence card and My Number, though some brokers require postal opening for foreign nationals, impose nationality restrictions, and NISA generally cannot continue after you leave Japan.
NISA eligibility turns on being a Japan resident, not on holding Japanese nationality. A qualifying foreign national residing in Japan can therefore open NISA, subject to the institution’s identity, visa, residence-card, tax-residency, sanctions, and product policies. Dual nationality by itself does not disqualify a resident, though another country may still tax NISA income or require reporting.
You will need a residence card, My Number evidence, a Japanese address, tax-residency declarations, and a Japanese bank account in your own name. SBI, Rakuten, Monex, and Matsui publish procedures accepting residence-card documentation.
Broker policies can be stricter than the tax statute. Some accept residence-card documentation fully online; others require postal processing for foreign nationals, which is slower. Certain nationalities, sanctioned-country connections, or politically exposed status can trigger enhanced review or rejection, and US persons face FATCA declarations and product restrictions. These matrices are rarely published in full, so confirm your specific case.
Name consistency is the most common practical hurdle: align your name across the residence card, bank account, and application, since a mismatch is the top cause of rejection or failed bank linkage.
Confirm English support at each stage you need it — opening, trading, tax documents, and incidents — not just on a marketing page; most foreign-resident-friendly brokers onboard mainly in Japanese, and browser translation does not make the controlling documents English. If genuine English at every stage is essential, IBKR Japan is the verified option.
Crucially, NISA is a residents’ benefit: it generally cannot continue after you become non-resident, except a qualifying temporary-departure continuation filed in advance. If you may leave Japan, get the broker’s written departure procedure before building a large NISA balance, and remember Japanese eligibility does not replace home-country reporting.
Brokerage (NISA/iDeCo) · Rakuten Securities
A leading low-cost brokerage for NISA and index-fund investing, integrated with Rakuten points and Rakuten Bank.
Fees: Many domestic funds and trades are low- or no-commission — verify current fee schedule.
Brokerage (NISA/iDeCo) · SBI Securities
Japan’s largest online brokerage by accounts, with a very broad low-cost fund lineup and full NISA/iDeCo support.
Fees: Many trades and funds are low- or no-commission — verify current fee schedule.
Brokerage (NISA/iDeCo) · Monex
An established online brokerage often chosen for US-stock access and research tools, with NISA and iDeCo support.
Fees: Commissions vary by product; some funds/trades are low-cost — verify current schedule.
Generally yes, if you are a tax resident of Japan (with a My Number) and at least 18. NISA is tied to residency, not citizenship, so most foreign residents qualify — with two big cautions: US citizens and green-card holders face US tax complications with Japanese funds, and NISA generally cannot continue after you leave Japan. Confirm eligibility and the current rules on the FSA site and with your chosen brokerage.
NISA is a benefit for residents. When you lose Japanese tax residency you generally cannot keep contributing, and brokerages differ on whether the account is closed, frozen, or must be sold — some allow a temporary overseas-resident continuation for limited periods. Because the tax treatment of unwinding matters, plan your exit before building a large balance and ask your brokerage about their specific offshore policy.