Japan’s record bond yields signal a shift every investor should care about

Subscribe to enjoy similar stories. For as long as most working professionals can remember, money has cost nothing. Not literally nothing, of course, but close enough that the difference didn't matter.

If you're under 40 and work in finance, startups, or investing, you've spent your entire career in a world where capital was essentially free. That world is now ending, and a chart of Japanese 30-year bond yields tells the story better than any expert commentary. Japan's 30-year government bond yield hit 3.5%, the highest level ever recorded.

To understand why this matters, you need to know that Japan didn't just participate in the global experiment with free money; it invented it. In 1999, while the rest of the world was partying like it was, well, 1999, Japan introduced a zero-interest rate policy. They were the pioneers, the true believers, the ones who held the faith longest.

For a quarter century, Japan was the world's ATM. Hedge funds, corporations, and speculators of every stripe borrowed in yen at near-zero rates to fund investments elsewhere. It was called the carry trade, and it was practically a licence to print money.

The chart I'm looking at shows Japanese 30-year yields bumping along between 0.5 and 2.5% for most of the past 25 years, actually dipping below 0.5% as recently as 2016. And now? A vertical line upward to levels not seen since before most readers started their careers. If even Japan – the most committed practitioner of ultra-loose monetary policy in human history – cannot sustain the fiction of free money, then the era is definitively over.