Japan Borrowing Costs Reach 1996 Highs: Will the Weak Yen Hurt Bitcoin?

Japan’s 10-year government bond yield (JP10Y) touched 2.945%, its highest level since September 1996. The yen has since slipped back toward 159 per dollar, undoing almost half of this month’s rescue rally.

Bitcoin (BTC) has ignored all of it. The pioneer crypto is up 22% in seven days. That gap between Japan’s stress and crypto’s calm is the real story.

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A 30-Year Record, Broken Twice Over

Data puts the peak at 2.945%, a level last seen in September 1996. Japan’s 30-year yield hit 4.115% the same morning.

“Japan’s bond market is flashing another major warning…10-year government bond yield has surged above 2.95% for the first time since 1996…At the same time, the Yen has given back much of its recent intervention-driven gains, adding another potential source of pressure on Treasuries,” analysts at the Global Markets Investor noted.

The cause is simple. Prices are climbing again. Core inflation reached 1.8% in July, up from 1.6% in June.

Strip out food and fuel and the figure was 1.9%. Traders read that as a green light for the Bank of Japan.

The BOJ meets on Sept. 17 and 18. Economists widely expect it to lift its policy rate from 1% to 1.25%, its next step in the exit from ultra-low rates.

Why Bitcoin Traders Watch the Yen

For years, investors borrowed yen at almost no cost. They swapped it for dollars and bought riskier assets. Traders call this the carry trade.

The Bank for International Settlements sized yen loans to offshore non-banks at roughly $250 billion. Broader measures reached about $500 billion.

When the yen jumps, those positions turn loss-making within hours.

“Your entire annualized carry just wiped out in one move,” Praneet Shah said. He is global head of FX options trading at Goldman Sachs.

August 2024 showed the damage. Bitcoin opened that month near $64,600 and wicked down to $49,000 on Aug. 5, according to VanEck. Tokyo’s TOPIX index fell 12% in one session.

The Trigger Has Not Arrived Yet

Tokyo and Washington intervened together in early August, their first joint operation since 2011. Goldman strategist Karen Fishman estimated Japan spent about $85 billion over two days.

It bought roughly three weeks. The yen reached 155.20, then drifted back above 158.

Japan funded part of that defence by selling US debt. Its Treasury holdings fell $26.4 billion in June to $1.117 trillion, the deepest monthly cut by any country.

American borrowing costs followed. The 10-year Treasury yield hit 4.74% on August 21, and Washington has since widened its long-dated bond buybacks.

“The debt CRISIS is not just a US story,” the analysts added.

The Bitcoin market price sits near $77,355 through all of this. Ray Dalio reads the same debt data as a reason to own Bitcoin, pairing a small position with 10% to 15% in gold.

History suggests the danger comes from a yen that surges, not one that sinks. Right now it is sinking. September is where Japan’s overlapping battles could flip that.

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