Hey everyone, Hirokichi here.
This time I want to talk about high-dividend stock investing, and how to build ¥10,000 a month in dividend income — basically a form of passive income. Dividends are money that comes in regularly just for holding a stock, so if you use them well, they can become a solid support for your household finances. Here’s a rundown of the investment amounts you’d need and some things to watch out for, aimed at people just getting started.
■ What is high-dividend stock investing? A guide to dividend yield levels
High-dividend stock investing means investing in stocks with a high dividend yield (annual dividend as a percentage of the stock price) and receiving that dividend income on an ongoing basis. The average dividend yield across Japanese stocks overall is a little over 2%, and generally a yield of 3-4% or higher is considered the benchmark for a “high-dividend” stock. Some stocks yield over 6%, but be careful — that’s often a “dividend trap,” where the yield looks high only because the stock price has dropped sharply due to weak business performance.
■ How much do you need to earn ¥10,000/month in dividends? A simulation by yield

¥10,000 a month in dividends works out to ¥120,000 a year. Dividing that by the dividend yield tells you roughly how much principal you’d need. At a 3% yield, that’s about ¥4 million; at 4%, about ¥3 million; at 5%, about ¥2.4 million; and at 6%, about ¥2 million. The higher the yield, the less principal you need — but that also raises the risk of running into a “dividend trap,” so it’s important not to pick stocks based on yield alone.
■ NISA’s growth investment quota makes dividends tax-free
Dividends on stocks are normally taxed at 20.315%. But if you hold your stocks in NISA’s growth investment quota (up to ¥2.4 million per year), your dividends are entirely tax-free. There’s no time limit on the tax-free period, so as long as you keep holding long-term, you won’t be taxed at all. That said, to actually receive dividends tax-free, you need to set your dividend payment method to the “proportional distribution by shares” option in your brokerage account. If you’ve selected bank transfer or another method, you won’t get the tax-free treatment — it’s worth double-checking your settings.
■ Building your principal through steady monthly investing: years to target by contribution amount

If you’re aiming for ¥10,000/month in dividends at a 3% yield, you’d need about ¥4 million in principal. Building that up through monthly contributions alone (ignoring any price appreciation, just a simple calculation), that works out to roughly 33 years at ¥10,000/month, 11 years at ¥30,000/month, 7 years at ¥50,000/month, and 5 years at ¥70,000/month. In reality, stock price appreciation and reinvesting dividends would likely get you there faster.
■ 3 tips for starting high-dividend stock investing
(1) Don’t concentrate on a single stock — spread your investments across multiple stocks and sectors. If you’re too concentrated in one industry, a downturn in that sector could cut dividends across the board.
(2) Look beyond dividend yield alone — check the payout ratio (how much of profit goes to dividends) and the track record of consecutive dividend increases. A high yield paired with unstable earnings raises the risk of a dividend cut.
(3) If picking individual stocks feels intimidating at first, starting with a high-dividend ETF (exchange-traded fund) is another option. A single ETF spreads your investment across many stocks, which makes it more approachable for beginners.
■ Conclusion: start small with NISA
¥10,000 a month in dividends is achievable with roughly ¥3-4 million in principal at a 3-4% yield. You don’t need to come up with that all at once — using NISA’s growth investment quota and building it up through steady monthly contributions, it’s a goal you can reach over time. Stay mindful of diversification, and consider starting high-dividend stock investing at a pace that works for you.
* This article is for informational purposes only and does not recommend any specific investment. Please make investment decisions at your own responsibility.
Let’s keep at it, slow and steady. See you next time!



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