EL7.AI
Central BanksMedium•18 September 2026•
2 min read

BOJ Hikes Rates to 31-Year High as Yen Weakens Against Dollar

Key Facts

1The Bank of Japan raised interest rates by 25 basis points, reaching the highest level in 31 years.
2The Japanese yen declined following the rate hike decision, while Bitcoin rose against the yen.

The Bank of Japan (BOJ) raised its benchmark interest rate by 25 basis points to 1.25% on Friday, marking the highest level in 31 years. This decision represents the second rate hike in three months under Governor Kazuo Ueda, as the central bank moves to combat persistent inflation and a chronically weak currency. According to reports, the market reaction was counter-intuitive, with the yen weakening immediately following the announcement while Bitcoin saw gains against the Japanese currency.

In the currency markets, the Japanese yen depreciated against the U.S. dollar, pushing the USD/JPY pair from 156.20 to 156.70. Meanwhile, the Bitcoin-Yen pair (BTC/JPY) on the bitFlyer exchange rose by 0.5% to reach JPY 12.06 million, though Bitcoin's dollar-denominated price remained steady near $76,900. These shifts highlight ongoing concerns regarding the unwinding of the 'carry trade,' where investors borrow in low-interest yen to fund higher-yielding assets globally.

As of the close on September 18, 2026, market participants are closely monitoring the impact of this policy normalization on global liquidity. While specific real-time price data for the primary instruments is currently unavailable in the database, the qualitative trend suggests heightened volatility in yen-denominated pairs. With no major Japanese economic catalysts listed in the upcoming calendar, focus remains on further signals from the BOJ regarding the pace of future tightening.