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Wealth Architect

Build your financial fortress in Japan. Tax-free investing, credit hacking, and global income strategies.

NISA vs. Bank Savings

The Japanese bank interest rate is ~0.001%. Inflation is ~2%. Leaving cash in the bank means losing value. NISA allows you to invest tax-free.

Official NISA Guide (FSA)

After 20 Years

Bank (0.001%)¥12,001,195
NISA (7%)¥26,046,333
Total Profit+¥14,046,333
Tax Saved (20.315%)¥2,853,513

Frequently Asked Questions

Yes, any person with an address registered in Japan — including foreigners — can open a NISA (Nippon Individual Savings Account) at a Japanese securities company and invest tax-free. The annual investment ceiling under the 2024-reformed NISA is ¥3.6 million (¥1.2 million in the tsumitate growth investment slot and ¥2.4 million in the growth investment slot), and profits, dividends, and capital gains are entirely tax-free for the lifetime of your holdings. Foreign residents should consult a tax advisor about reporting obligations in their home country.
iDeCo is Japan's individual-type defined contribution pension plan where your monthly contributions (¥12,000 to ¥68,000 depending on your employment type) are fully deductible from your income tax and residence tax each year. The investments grow tax-deferred inside the account, and you can choose from approved mutual funds, ETFs, and fixed deposits. The significant downside is that funds are locked until you reach age 60, making iDeCo most suitable for foreigners who plan to remain in Japan long-term.
When you deregister your Japanese address upon leaving Japan, your NISA account must be closed or converted to a regular taxable account; any tax-free gains remain tax-free but new investments cannot be added. iDeCo accounts can remain open and continue growing tax-deferred even after you leave Japan, but you cannot make new contributions from abroad and must nominate a domestic representative. Consulting a tax professional in both Japan and your home country before departing is strongly recommended for foreigners with significant investment accounts.
For most foreigners building wealth through Japan's NISA system, low-cost index mutual funds are the recommended starting point because they allow automatic monthly investment (tsumitate) without needing to monitor markets. The eMaxis Slim All Country and eMaxis Slim S&P500 funds from Mitsubishi UFJ Asset Management are consistently the most popular among cost-conscious investors in Japan. ETFs offer slightly lower expense ratios but require more active management and cannot be purchased in fixed yen amounts automatically.
Yes, Japan places no nationality restrictions on foreign ownership of real estate, and foreigners can purchase both residential and investment properties freely. The main practical challenge for foreigners is mortgage access — most Japanese banks require permanent residence status or a spouse visa to approve a home loan, though some lenders work with other long-term visa holders with strong income. Property tax obligations, maintenance fees, and earthquake insurance costs continue regardless of whether you live in Japan, which is a consideration for foreigners planning to eventually leave.

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