🇯🇵 Investing Japan’s NISA vs Roth IRA: My Real Strategy

A personal take on Japan’s revamped tax-free investment system — what I invest in, why I chose it, and what’s holding me back from maxing it out.

Japan’s New NISA program encourages long-term investing. Here’s how I’m putting in ¥50,000 every month.

🇯🇵 What Is NISA?

NISA stands for “Nippon Individual Savings Account” — Japan’s answer to tax-free investing programs like the Roth IRA (U.S.) or TFSA (Canada).

In 2024, the program was reformed and expanded dramatically. The new system gives individuals access to two tax-exempt investment accounts:

🟢 Tsumitate Investment (積立枠)

• Designed for long-term, monthly investing
• Annual limit: ¥1.2 million (≈ $7,500 USD)
• Investments must be in low-cost mutual funds or ETFs

🔵 Growth Investment (成長投資枠)

• For more flexible investing, including individual stocks and ETFs
• Annual limit: ¥2.4 million (≈ $15,000 USD)

Unlike the old version, the new NISA has no time limit and much higher contribution ceilings.

👤 My NISA Strategy (as a Japanese investor)

I began seriously using NISA in 2024, the year it was revamped. While many guides explain what you can do with NISA, here’s what I’m actually doing:

💸 Tsumitate Investment (¥1.2M/year max) I invest ¥50,000/month into the: 👉 Rakuten・Plus・S&P500 Index Fund

Why this one?

• It’s low-cost and tracks the U.S. S&P 500
• Rakuten Securities offers point rewards when using credit card auto-investing
• It’s simple, automated, and fits my long-term goals

Although the monthly max is ¥100,000, I’ve chosen to start smaller. I hope to catch up later in the year, but my budget is tight after recent wedding expenses!

📈 Growth Investment (¥2.4M/year max) In this account, I’m building a position in: 👉 NEXT FUNDS Nikkei High Dividend Yield 70 ETF (1577)

My goal is to eventually hit a 3% dividend yield, though I’m currently around 1.4% because my portfolio is still growth-heavy.

I also balance between yen-based and USD-based assets to reduce foreign exchange risk.

🌏 Global Context: NISA vs. U.S. & Taiwan Systems

Most NISA content is written in Japanese and aimed at local residents. But Japan is opening up as a market — and foreign investors or expats might benefit too.

To help frame it globally, here’s a simple comparison between Japan, the U.S., and Taiwan:

🇯🇵 Japan

NISA (New NISA) Tax-free investment gains and dividends, flexible withdrawals. Annual limits: ¥1.2M (Tsumitate) + ¥2.4M (Growth)

iDeCo (Pension-type plan) Tax-deductible contributions, tax-free gains. Funds are locked until age 60, focused on retirement.

🇺🇸 United States

Roth IRA Post-tax contributions. Withdrawals are tax-free after age 59.5. Contribution limit: $7,000 (or $8,000 if 50+)

401(k) Employer-sponsored, pre-tax contributions reduce taxable income. Withdrawals taxed in retirement. Limit: ~$23,000

🇹🇼 Taiwan

No official tax-free investment account like NISA or Roth IRA. Most individuals invest through general brokerage accounts, paying taxes on dividends and gains. Recently, interest in U.S. ETFs and local high-dividend stocks is increasing.

🧭 Final Thoughts

NISA has been a great tool to create discipline in my investment habits. Even though I’m not maxing it out yet, I know exactly where I’m headed.

As someone who blogs in Japanese and now experiments on Medium, I want to:

• Share Japan-specific insights from a personal perspective
• Introduce cultural differences in how we invest (e.g., shareholder perks!)
• Build a bridge for anyone curious about Japanese finance, tech, or life

More updates coming soon — like the pros and cons of Japan’s shareholder perks system, and how I choose my dividend ETFs.

If you’re interested in how Japan handles investing, taxation, or lifestyle finance — follow along!

🔗 Read More on My Blog (in Japanese)

If you’d like to read more detailed posts (in Japanese) about investing, finance, or life in Japan, check out my blog:

👉 効率家ラボ

I write real case studies, tools I use, and behind-the-scenes of my strategy.