What Is NISA? A Complete Guide to Japan’s Tax-Free Investment Account

Japan’s NISA (Nippon Individual Savings Account) program is one of the most powerful wealth-building tools available to Japanese residents and international investors with ties to Japan. If you’re looking for a way to grow your investments without paying taxes on your returns, NISA is worth understanding thoroughly.

What Is NISA?

NISA is Japan’s tax-free investment account program, introduced in 2014 to encourage households to move savings from low-yield bank accounts into capital markets. Like a Roth IRA in the United States or an ISA in the United Kingdom, investments held within a NISA account generate capital gains and dividends that are entirely exempt from Japanese taxation — for as long as the account remains open.

The program has undergone several expansions since its launch, with the current framework — sometimes called “新版NISA” (New NISA) — in place since 2024, featuring significantly expanded contribution limits.

The Two NISA Account Types

NISA consists of two complementary account types, each with distinct characteristics:

Tsumitate NISA (积累型 NISA)

Designed for passive, regular investors. Allows up to ¥800/month (¥9,600/year) in approved index funds and ETFs. The tax-free holding period is 5 years per batch, with the account itself renewable indefinitely.

Eligible investments include Japan-listed ETFs tracking the Nikkei 225, TOPIX, MSCI Japan, MSCI ACWI, and S&P 500 (yen-hedged versions preferred to reduce forex risk).

Growth Investment枠 (了一般投資枠, “Kurosu”)

Introduced in January 2024 as part of the New NISA framework. Allows up to ¥2.4 million per year in individual stocks, ETFs, REITs, and publicly offered investment trusts. There is no specific holding period — gains remain tax-free as long as holdings remain in the account.

This window is designed for investors who want to pick individual Japanese or global stocks within their NISA account.

Annual Contribution Limits (2026 Framework)

• Tsumitate NISA: ¥800/month × 12 = ¥9,600/year maximum
• Growth Investment枠: ¥2.4M/year maximum
• Combined annual maximum: ¥2.4096M (when fully utilizing both accounts)
• Lifetime allowance: ¥3.8M across the Growth Investment枠

The Tax Advantage: Why NISA Changes Everything

In a standard Japanese taxable brokerage account, both capital gains and dividends are taxed at 20.315% (including reconstruction surtax). For an investor earning 7% annually on a ¥2 million portfolio, this tax drag costs roughly ¥28,000-40,000 per year in foregone returns — compounding significantly over decades.

Inside a NISA account, those same returns are completely tax-free. The 20.315% savings compounds automatically, year after year, with no additional effort required from the investor.

Who Is Eligible?

• Japanese residents aged 18+ with a valid residence card (if a foreign national)
• Those with a Japanese tax identification number (My Number card or notification card)
• Account holders (as of 2026): approximately 22 million NISA accounts nationwide

How to Get Started

1. Choose a broker: SBI Securities, Rakuten Securities, Monex, au Kabucom Securities, and SMBC Nikko all offer NISA accounts with different fee structures and product offerings.
2. Open a NISA-eligible securities account: Complete the NISA application as part of the account opening process (most brokers allow fully online applications).
3. Transfer funds: Link your Japanese bank account and transfer up to your annual limit.
4. Select investments: Choose from approved index funds, ETFs, individual stocks, or REITs within your account type.

Is NISA Worth It?

For anyone planning to hold Japanese or global equities for more than 3-5 years, NISA is almost universally beneficial. The tax drag even at modest returns meaningfully compounds over time. Maximizing your NISA allowance each year should be a priority before contributing to taxable accounts.

Common Mistakes to Avoid with NISA

Even experienced investors make avoidable errors with their NISA accounts. Watch for these:

• Mixing account types incorrectly: A single NISA account can hold both Tsumitate and Growth Investment枠 holdings simultaneously, but contribution limits apply across the whole account — not per type. Track combined usage carefully.
• Forgetting the lifetime cap: Growth Investment枠 contributions accumulate against an ¥3.8M lifetime cap in addition to the ¥2.4M annual cap. Investors who maxed out 2024 and 2025 have less room in 2026 than they think.
• Selling and re-buying outside Tsumitate rules: Tsumitate holdings bought with one year’s contribution cannot be re-purchased at a different price within the same calendar year using the same contribution slot — a subtle rule that catches active investors.
• Exceeding annual limits accidentally: Over-contributions are taxed at the standard 20.315% rate on the excess and cannot be retroactively fixed without penalty paperwork. Set calendar reminders each January.

Transfer-In and Rollover Rules

Investors who opened a NISA account before 2024 hold “Old NISA” positions that can be transferred to a New NISA account, but the rollover mechanics matter:

• Old NISA Tsumitate positions transferred into a New NISA account consume part of the ¥3.6M lifetime Growth Investment枠 allowance on a fair-value basis — not at the original contribution amount.
• Old NISA General Investment枠 (旧一般NISA) holdings cannot be transferred into New NISA accounts; they remain in their original tax-free wrapper until the original 5-year holding period expires.
• Transfer between brokers (e.g., SBI → Rakuten) is permitted once per calendar year and typically takes 2-4 weeks. Holdings transfer in-kind with cost basis preserved.

NISA vs iDeCo vs Taxable Accounts

NISA is one of three primary tax-advantaged options for Japanese retail investors. The right choice depends on your time horizon and liquidity needs:

Most retail investors benefit from maximizing NISA first (no lock-up, broader product range), then iDeCo for the tax deduction, then a taxable account for any excess.

Inheritance and NISA Accounts

NISA accounts can be inherited, but the tax treatment depends on when the original holder dies:

• If the holder dies on or after September 30, 2026, heirs receive inherited NISA positions into a new “Inheritance NISA” account with a ¥6M (Growth) + ¥9,600 (Tsumitate) combined limit, tax-free for up to 5 additional years.
• If the holder dies before October 1, 2026, the tax-free status of inherited positions depends on whether the death occurs during the original holding period — gains remain tax-free; otherwise, the standard 20.315% applies to gains accrued since the original purchase.
• Heirs should notify the broker within 12 months of death to preserve the inheritance window.

Frequently Asked Questions

Can I have a NISA account at more than one broker?

No — each individual is limited to one NISA account across all brokers. Open additional sub-accounts for different strategies, but the underlying NISA registration is per-person, not per-account.

Does NISA apply to non-Japanese stocks?

Yes. The Growth Investment枠 allows individual foreign stocks, foreign-listed ETFs (including S&P 500 ETFs), and REITs from any country, subject to broker availability.

What happens if I leave Japan permanently?

If you lose Japanese tax residency, your NISA account is frozen — no new contributions or purchases are allowed. Existing holdings remain tax-free until sold, but sales after departure are still tax-free (because the holdings were acquired under NISA terms).

Can I contribute to a NISA account for my spouse or children?

Adult spouses can open their own NISA accounts (subject to the standard eligibility rules). Minor children — yes, since the 2024 New NISA expansion — can hold NISA accounts in their own names, with the parent or guardian managing the application.

This article is for informational purposes only and does not constitute investment advice. Tax rules and contribution limits are subject to change. Consult a licensed financial advisor or tax professional before making investment decisions.