For 2026, Japan's NISA (Nippon Individual Savings Account) tax wrapper can be opened by a person living in Japan who is 18 or older on January 1 of the relevant year. It is limited to one account per person. The headline capacity is up to ¥3.6 million of purchases in a year and a ¥18 million lifetime tax-exempt holding ceiling, but those figures describe different limits.
NISA is not a universal brokerage account and it is not a declaration that every investment outcome is tax-free. The Financial Services Agency (FSA) sets the program framework; a financial institution handles account opening and its own product and operational rules. For an investor arriving in Japan, the useful first task is to separate eligibility, annual purchase capacity and the Japanese tax treatment from the investments themselves.
Key takeaways
- In 2026, the FSA says a person living in Japan who is 18 or older on January 1 can open a NISA account; only one account is permitted per person.
- The annual maximum is ¥3.6 million: up to ¥1.2 million through the installment-investment quota and up to ¥2.4 million through the growth-investment quota. The two quotas may be used together.
- The lifetime tax-exempt holding ceiling is ¥18 million on a book-value basis, including a ¥12 million maximum for the growth-investment quota.
- A sale does not make a loss disappear or lock in a gain tax-free everywhere. The FSA says the sold asset's acquisition-cost capacity can be reused from a later year.
- NISA does not settle foreign withholding tax, treaty claims, broker eligibility, product suitability or investment risk.
Who can open a Japan NISA account in 2026?
The FSA's current NISA explainer says that a person who lives in Japan and is an adult aged 18 or older on January 1 of the year can open an account. It also says that each person may have one NISA account. Those are program-level conditions, not a promise that a particular bank or securities company will accept every applicant or product order.
For an international reader, the word resident is the important boundary. Do not substitute nationality, passport, employer or an overseas brokerage relationship for the FSA's domestic-residency condition. Account-opening identification, My Number procedures, tax residence and a provider's policy are operational questions to confirm directly with the provider and, when needed, a qualified tax adviser.
The account is a tax wrapper around eligible investments bought through it. It is not a substitute for learning the local market mechanics. Before choosing a Tokyo-listed security, ATG Press's Japan stock lot-size guide explains why the standard domestic trading unit is often 100 shares, while the Tokyo Stock Exchange trading-hours guide covers the sessions and holiday checks that affect order timing.
The two annual NISA quotas: ¥1.2 million plus ¥2.4 million
The 2026 framework has two purchase lanes that can operate at the same time:
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| Quota | Annual purchase capacity | Broad purpose | Relationship to the other quota |
|---|---|---|---|
| Installment-investment quota | Up to ¥1.2 million | Regular-investment route for qualifying funds | Can be used alongside the growth-investment quota |
| Growth-investment quota | Up to ¥2.4 million | Broader eligible-investment route, subject to program rules | Can be used alongside the installment-investment quota |
| Combined annual maximum | Up to ¥3.6 million | Total possible purchases across both lanes | Not a required contribution and not a return forecast |
The FSA's English program table describes the ¥1.2 million installment-investment quota and ¥2.4 million growth-investment quota, and confirms that both can be used at the same time. These are purchase capacities. They do not say how much cash an investor should commit, which product is appropriate or what an investment will be worth later.
Eligible product lists and transaction handling can differ by provider. Treat the quota name as a program category, then check the current provider offering, costs, dealing method and documentation before placing an order.
What the ¥18 million lifetime ceiling actually measures
The program's total tax-exempt holding limit is ¥18 million. Within that total, the growth-investment quota has a ¥12 million sub-limit. The FSA describes the total as managed on a book-value basis: the relevant capacity tracks what was paid to acquire assets, rather than becoming a moving market-value target.
That distinction prevents two common errors. First, a rise in the market value of an investment does not by itself use up more of the ¥18 million purchase capacity. Second, selling an asset does not mean the investment result is erased. The FSA explains that, from a subsequent year, capacity equivalent to the sold asset's acquisition cost can be reused. It is not a same-day recycling rule, and it is not a mechanism for offsetting losses.
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| Limit | Amount | What it constrains | What it does not mean |
|---|---|---|---|
| Combined annual capacity | ¥3.6 million | Purchases across the two annual quotas | A recommended annual contribution |
| Total tax-exempt holding limit | ¥18 million | Lifetime book-value capacity under the new system | A market-value cap or a guaranteed gain |
| Growth-investment portion of total | ¥12 million | The part of the lifetime capacity used in the growth quota | An extra ¥12 million on top of ¥18 million |
The permanent system has an indefinite tax-exempt holding period, according to the FSA's English summary. That durability does not remove the need to check whether a product is eligible, whether the account remains operationally available in a changed personal circumstance or what taxes apply outside Japan.
What NISA does — and does not — decide
At its core, NISA changes the Japanese tax treatment of qualifying investment income and gains within the account under the program rules. It does not select investments, prevent losses, eliminate foreign withholding taxes or override another country's tax rules. A dividend from a non-Japanese issuer can still involve source-country withholding; an investor's residence and treaty position can still matter.
The FSA's documentation deliberately separates the two program quotas from the financial institution's product menu. That is a useful reader discipline too. Confirm the program limit first, then separately check the provider's eligible products, fees, fractional-order policy, currency conversion and reporting. For a listed Japanese company, the holding route can also matter: ATG Press's Toyota ADR versus 7203 guide shows how an overseas depositary receipt can differ from a Tokyo ordinary share even when both relate to the same issuer.
If you are moving into or out of Japan, do not infer account treatment from this overview. Ask the provider about the current process before a residency change, and use the National Tax Agency's NISA information page as the official starting point for account procedure references.
A practical account-opening checklist
- Confirm that you meet the FSA's current domestic-residency and January 1 age conditions for the year.
- Check that you are not opening a second NISA account; the FSA says the program is one account per person.
- Ask the chosen financial institution for its current identity, My Number, product-eligibility and dealing requirements.
- Decide whether the relevant purchase belongs in the installment-investment quota, growth-investment quota or neither; do not assume every security is eligible.
- Track purchases against both the annual quota and the ¥18 million lifetime book-value ceiling, including the ¥12 million growth-investment portion.
- Keep foreign-tax, treaty, currency, fee and record-keeping questions separate from the Japanese NISA limit calculation.
Sources
- Financial Services Agency: Existing NISA system -- English summary of the permanent system's annual quotas, lifetime limits and indefinite holding period; published 2023 and accessed 2026-10-01.
- Financial Services Agency: NISA explanatory page -- official current page on eligibility, one-account rule, annual capacity, lifetime capacity and later reuse of sold acquisition-cost capacity; accessed 2026-10-01. Official page is in Japanese; the article paraphrases its verified content in English.
- National Tax Agency: NISA information -- official tax-administration information and account-procedure references; accessed 2026-10-01. Official page is in Japanese.
- Financial Services Agency: strategic priorities and new NISA table -- English corroboration of the two quota structure and book-value reuse framework; published 2023 and accessed 2026-10-01.
Disclaimer
This article is for informational purposes only and does not constitute investment advice. NISA eligibility, tax residence, foreign taxes, treaty relief, product availability and broker procedures depend on current rules and individual circumstances. Verify current information with the Financial Services Agency, National Tax Agency and your financial institution before acting.
