Japan 10-Year Bond Yield Surpasses 3% for First in 30 Years

If you hold a yen mortgage, own property in Japan, or have never bought a Japanese government bond because of Japan's near-zero rates, this is the turning point of the past few years worth stopping for.

This week Japan's long-term rates rose sharply, with the 10-year government bond yield briefly topping 3% for the first time in about 30 years. The weight of this is clear once you recall the context: Japan has run a globally rare ultra-low-rate regime, with the 10-year yield hugging zero or below for years, an anchor for global funding costs. Breaking 3% means the market is now formally pricing the BOJ's gradual exit from easing, betting real money that Japanese rates keep climbing.

Rising rates travel to ordinary people along two paths. First, mortgages: long-term yields underpin fixed-rate loan pricing, so new and refinanced mortgage rates rise, lifting monthly payments, which is exactly the backdrop to the same day's "50-year mortgage" story. Second, companies: higher borrowing costs squeeze profits and force a rethink of investment and M&A that leaned on cheap money.

For Taiwanese readers, two practical takeaways: asset allocation gains a new option, since a 3% yield gives yen-denominated fixed income real discussion value again, though you must price in currency risk; and anyone holding or planning a yen mortgage should treat "rates have entered an upcycle" as the base case, not extrapolate from the past decade's lows. Watch the BOJ's language on hikes at its next meeting and whether the 10-year holds above 3%.