On Friday, Japan’s 30-year bond yield rose to a record 4.223%, marking its highest peak since Tokyo initially issued this maturity back in 1999.
Across the yield curve, borrowing costs continue to climb, with the 10-year yield hitting 3.055% on Thursday—the highest level recorded since August 1996.
Why Japan’s 30-Year Bond Yield Keeps Climbing
Shifting monetary policy serves as the primary catalyst. On September 18, the Bank of Japan (BOJ) increased rates to 1.25%, reaching the highest point since 1995. Although the board voted 7-2, the central bank’s official statement indicated that additional rate hikes remain possible.
Fiscal pressures compound the situation. Reuters reported that government ministries have requested a record ¥143.1 trillion for the 2027 fiscal year, with debt servicing alone accounting for ¥36.64 trillion. In response, the Finance Ministry elevated its assumed borrowing rate from 3% to 3.8%.
Furthermore, international sell-offs have spilled over into Tokyo. During a global bond sell-off on September 15, the US 10-year Treasury yield surpassed 5%, leading the Federal Reserve to adjust its target range to between 3.75% and 4%.
Despite these adjustments, the yen has failed to gain strength, sliding toward 158 per dollar following the BOJ’s decision. A comparable division occurred in August when Japan’s 2-year yield touched a 31-year high.
Katsutoshi Inadome, representing Sumitomo Mitsui Trust Asset Management, connected these two developments.
“Japanese bond yields are facing upward pressure as inflation concerns grew on a weaker yen.”
What Japan’s Record Yield Means for Bitcoin
When safe returns increase, the threshold for risk assets rises. With Japanese 30-year bonds now paying in excess of 4%, capital could potentially shift away from the cryptocurrency market.
A more significant threat lies within the yen carry trade, a practice where investors borrow inexpensive yen to purchase higher-yielding overseas assets. A sudden surge in the yen would increase the cost of these loans and could trigger forced liquidations.
This risk has historically impacted the crypto sector severely. During the 2024 yen shock, both Bitcoin and Ethereum dropped by roughly 20% as market positions were unwound.
BeInCrypto data shows Bitcoin (BTC) currently changing hands near $84,033, reflecting a 0.5% decrease over 24 hours. Because a substantial margin remains between US and Japanese interest rates, the carry trade continues to function.
Consequently, the yen serves as a key indicator to monitor. Any abrupt reversal in the USD/JPY pair would signal that carry positions are being closed out, which could impact Bitcoin rapidly.
Frequently Asked Questions
What did Japan’s 30-year bond yield reach?
Japan’s 30-year bond yield hit a record 4.223% on Friday, the highest level since the maturity was first sold in 1999.
Why are Japanese bond yields rising?
The increases are driven by monetary policy adjustments—such as the BOJ raising rates to 1.25%—alongside fiscal strain from record budget requests and international bond market spillover effects.
How does this impact Bitcoin and cryptocurrency?
Higher yields on safe government bonds raise the hurdle for risk assets like crypto. Additionally, any major unwinding of the yen carry trade could force sudden liquidations, similar to the downturn seen during the 2024 yen shock.
What is the current price of Bitcoin?
According to BeInCrypto data cited in the article, Bitcoin trades near $84,033.
